From 7602e8f9383be37c0f7d9359f862c366b7f2fa00 Mon Sep 17 00:00:00 2001
From: syuilo <syuilotan@yahoo.co.jp>
Date: Tue, 24 Apr 2018 18:13:06 +0900
Subject: cafy 5.xに移行
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/server/api/endpoints/users/show.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/server/api/endpoints/users/show.ts')

diff --git a/src/server/api/endpoints/users/show.ts b/src/server/api/endpoints/users/show.ts
index 7e7f5dc488..64adb5963b 100644
--- a/src/server/api/endpoints/users/show.ts
+++ b/src/server/api/endpoints/users/show.ts
@@ -1,7 +1,7 @@
 /**
  * Module dependencies
  */
-import $ from 'cafy';
+import $ from 'cafy'; import ID from '../../../../cafy-id';
 import User, { pack } from '../../../../models/user';
 import resolveRemoteUser from '../../../../remote/resolve-user';
 
@@ -14,7 +14,7 @@ module.exports = (params, me) => new Promise(async (res, rej) => {
 	let user;
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).optional.id().$;
+	const [userId, userIdErr] = $(params.userId).optional.type(ID).$;
 	if (userIdErr) return rej('invalid userId param');
 
 	// Get 'username' parameter
-- 
cgit v1.2.3-freya


From 7ea42af0ba9f3678985270f382279560609623be Mon Sep 17 00:00:00 2001
From: syuilo <syuilotan@yahoo.co.jp>
Date: Wed, 25 Apr 2018 22:37:08 +0900
Subject: wip

---
 .../app/desktop/views/components/lists-window.vue  |  46 --------
 src/client/app/desktop/views/components/notes.vue  |   8 +-
 .../desktop/views/components/ui.header.account.vue |   4 +-
 .../views/components/user-list-timeline.vue        |   2 +
 .../desktop/views/components/user-lists-window.vue |  46 ++++++++
 .../app/desktop/views/pages/user-list.users.vue    | 131 +++++++++++++++++++++
 src/client/app/desktop/views/pages/user-list.vue   |   5 +
 src/server/api/endpoints/users/show.ts             |  58 +++++----
 8 files changed, 225 insertions(+), 75 deletions(-)
 delete mode 100644 src/client/app/desktop/views/components/lists-window.vue
 create mode 100644 src/client/app/desktop/views/components/user-lists-window.vue
 create mode 100644 src/client/app/desktop/views/pages/user-list.users.vue

(limited to 'src/server/api/endpoints/users/show.ts')

diff --git a/src/client/app/desktop/views/components/lists-window.vue b/src/client/app/desktop/views/components/lists-window.vue
deleted file mode 100644
index 30b1794a29..0000000000
--- a/src/client/app/desktop/views/components/lists-window.vue
+++ /dev/null
@@ -1,46 +0,0 @@
-<template>
-<mk-window ref="window" is-modal width="500px" height="550px" @closed="$destroy">
-	<span slot="header">%fa:list% リスト</span>
-
-	<button class="ui" @click="add">リストを作成</button>
-	<router-link v-for="list in lists" :key="list.id" :to="`/i/lists/${list.id}`">{{ list.title }}</router-link>
-</mk-window>
-</template>
-
-<script lang="ts">
-import Vue from 'vue';
-export default Vue.extend({
-	data() {
-		return {
-			fetching: true,
-			lists: []
-		};
-	},
-	mounted() {
-		(this as any).api('users/lists/list').then(lists => {
-			this.fetching = false;
-			this.lists = lists;
-		});
-	},
-	methods: {
-		add() {
-			(this as any).apis.input({
-				title: 'リスト名',
-			}).then(async title => {
-				const list = await (this as any).api('users/lists/create', {
-					title
-				});
-
-				this.$router.push(`i/lists/${ list.id }`);
-			});
-		},
-		close() {
-			(this as any).$refs.window.close();
-		}
-	}
-});
-</script>
-
-<style lang="stylus" scoped>
-
-</style>
diff --git a/src/client/app/desktop/views/components/notes.vue b/src/client/app/desktop/views/components/notes.vue
index ae36c899d5..01e1f5c2f0 100644
--- a/src/client/app/desktop/views/components/notes.vue
+++ b/src/client/app/desktop/views/components/notes.vue
@@ -223,18 +223,18 @@ root(isDark)
 		background $theme-color
 
 	> footer
-		> *
+		> button
 			display block
 			margin 0
 			padding 16px
 			width 100%
 			text-align center
 			color #ccc
+			background isDark ? #282C37 : #fff
 			border-top solid 1px isDark ? #1c2023 : #eaeaea
-			border-bottom-left-radius 4px
-			border-bottom-right-radius 4px
+			border-bottom-left-radius 6px
+			border-bottom-right-radius 6px
 
-		> button
 			&:hover
 				background isDark ? #2e3440 : #f5f5f5
 
diff --git a/src/client/app/desktop/views/components/ui.header.account.vue b/src/client/app/desktop/views/components/ui.header.account.vue
index 93ee5aa195..b91448af49 100644
--- a/src/client/app/desktop/views/components/ui.header.account.vue
+++ b/src/client/app/desktop/views/components/ui.header.account.vue
@@ -45,7 +45,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import MkListsWindow from './lists-window.vue';
+import MkUserListsWindow from './user-lists-window.vue';
 import MkSettingsWindow from './settings-window.vue';
 import MkDriveWindow from './drive-window.vue';
 import contains from '../../../common/scripts/contains';
@@ -86,7 +86,7 @@ export default Vue.extend({
 		},
 		list() {
 			this.close();
-			(this as any).os.new(MkListsWindow);
+			(this as any).os.new(MkUserListsWindow);
 		},
 		settings() {
 			this.close();
diff --git a/src/client/app/desktop/views/components/user-list-timeline.vue b/src/client/app/desktop/views/components/user-list-timeline.vue
index f71972ab78..8a1814f99c 100644
--- a/src/client/app/desktop/views/components/user-list-timeline.vue
+++ b/src/client/app/desktop/views/components/user-list-timeline.vue
@@ -1,5 +1,7 @@
 <template>
+<div>
 	<mk-notes ref="timeline" :more="existMore ? more : null"/>
+</div>
 </template>
 
 <script lang="ts">
diff --git a/src/client/app/desktop/views/components/user-lists-window.vue b/src/client/app/desktop/views/components/user-lists-window.vue
new file mode 100644
index 0000000000..30b1794a29
--- /dev/null
+++ b/src/client/app/desktop/views/components/user-lists-window.vue
@@ -0,0 +1,46 @@
+<template>
+<mk-window ref="window" is-modal width="500px" height="550px" @closed="$destroy">
+	<span slot="header">%fa:list% リスト</span>
+
+	<button class="ui" @click="add">リストを作成</button>
+	<router-link v-for="list in lists" :key="list.id" :to="`/i/lists/${list.id}`">{{ list.title }}</router-link>
+</mk-window>
+</template>
+
+<script lang="ts">
+import Vue from 'vue';
+export default Vue.extend({
+	data() {
+		return {
+			fetching: true,
+			lists: []
+		};
+	},
+	mounted() {
+		(this as any).api('users/lists/list').then(lists => {
+			this.fetching = false;
+			this.lists = lists;
+		});
+	},
+	methods: {
+		add() {
+			(this as any).apis.input({
+				title: 'リスト名',
+			}).then(async title => {
+				const list = await (this as any).api('users/lists/create', {
+					title
+				});
+
+				this.$router.push(`i/lists/${ list.id }`);
+			});
+		},
+		close() {
+			(this as any).$refs.window.close();
+		}
+	}
+});
+</script>
+
+<style lang="stylus" scoped>
+
+</style>
diff --git a/src/client/app/desktop/views/pages/user-list.users.vue b/src/client/app/desktop/views/pages/user-list.users.vue
new file mode 100644
index 0000000000..63070ed609
--- /dev/null
+++ b/src/client/app/desktop/views/pages/user-list.users.vue
@@ -0,0 +1,131 @@
+<template>
+<div>
+	<mk-widget-container>
+		<template slot="header">%fa:users% ユーザー</template>
+		<button slot="func" title="ユーザーを追加" @click="add">%fa:plus%</button>
+
+		<div data-id="d0b63759-a822-4556-a5ce-373ab966e08a">
+			<p class="fetching" v-if="fetching">%fa:spinner .pulse .fw% %i18n:common.loading%<mk-ellipsis/></p>
+			<template v-else-if="users.length != 0">
+				<div class="user" v-for="_user in users">
+					<router-link class="avatar-anchor" :to="_user | userPage">
+						<img class="avatar" :src="`${_user.avatarUrl}?thumbnail&size=42`" alt="" v-user-preview="_user.id"/>
+					</router-link>
+					<div class="body">
+						<router-link class="name" :to="_user | userPage" v-user-preview="_user.id">{{ _user | userName }}</router-link>
+						<p class="username">@{{ _user | acct }}</p>
+					</div>
+				</div>
+			</template>
+			<p class="empty" v-else>%i18n:@no-one%</p>
+		</div>
+	</mk-widget-container>
+</div>
+</template>
+
+<script lang="ts">
+import Vue from 'vue';
+
+export default Vue.extend({
+	props: {
+		list: {
+			type: Object,
+			required: true
+		}
+	},
+	data() {
+		return {
+			fetching: true,
+			users: []
+		};
+	},
+	mounted() {
+		(this as any).api('users/show', {
+			userIds: this.list.userIds
+		}).then(users => {
+			this.users = users;
+			this.fetching = false;
+		});
+	},
+	methods: {
+		add() {
+			(this as any).apis.input({
+				title: 'ユーザー名',
+			}).then(async username => {
+				const user = await (this as any).api('users/show', {
+					username
+				});
+
+				(this as any).api('users/lists/push', {
+					listId: this.list.id,
+					userId: user.id
+				});
+			});
+		}
+	}
+});
+</script>
+
+<style lang="stylus" scoped>
+root(isDark)
+	> .user
+		padding 16px
+		border-bottom solid 1px isDark ? #1c2023 : #eee
+
+		&:last-child
+			border-bottom none
+
+		&:after
+			content ""
+			display block
+			clear both
+
+		> .avatar-anchor
+			display block
+			float left
+			margin 0 12px 0 0
+
+			> .avatar
+				display block
+				width 42px
+				height 42px
+				margin 0
+				border-radius 8px
+				vertical-align bottom
+
+		> .body
+			float left
+			width calc(100% - 54px)
+
+			> .name
+				margin 0
+				font-size 16px
+				line-height 24px
+				color isDark ? #fff : #555
+
+			> .username
+				display block
+				margin 0
+				font-size 15px
+				line-height 16px
+				color isDark ? #606984 : #ccc
+
+	> .empty
+		margin 0
+		padding 16px
+		text-align center
+		color #aaa
+
+	> .fetching
+		margin 0
+		padding 16px
+		text-align center
+		color #aaa
+
+[data-id="d0b63759-a822-4556-a5ce-373ab966e08a"][data-darkmode]
+	root(true)
+
+[data-id="d0b63759-a822-4556-a5ce-373ab966e08a"]:not([data-darkmode])
+	root(false)
+
+</style>
diff --git a/src/client/app/desktop/views/pages/user-list.vue b/src/client/app/desktop/views/pages/user-list.vue
index a01da97f6e..2241b84e5e 100644
--- a/src/client/app/desktop/views/pages/user-list.vue
+++ b/src/client/app/desktop/views/pages/user-list.vue
@@ -3,6 +3,7 @@
 	<div v-if="!fetching" data-id="02010e15-cc48-4245-8636-16078a9b623c">
 		<div>
 			<div><h1>{{ list.title }}</h1></div>
+			<x-users :list="list"/>
 		</div>
 		<main>
 			<mk-user-list-timeline :list="list"/>
@@ -13,8 +14,12 @@
 
 <script lang="ts">
 import Vue from 'vue';
+import XUsers from './user-list.users.vue';
 
 export default Vue.extend({
+	components: {
+		XUsers
+	},
 	data() {
 		return {
 			fetching: true,
diff --git a/src/server/api/endpoints/users/show.ts b/src/server/api/endpoints/users/show.ts
index 64adb5963b..141565ece6 100644
--- a/src/server/api/endpoints/users/show.ts
+++ b/src/server/api/endpoints/users/show.ts
@@ -8,7 +8,7 @@ import resolveRemoteUser from '../../../../remote/resolve-user';
 const cursorOption = { fields: { data: false } };
 
 /**
- * Show a user
+ * Show user(s)
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	let user;
@@ -17,6 +17,10 @@ module.exports = (params, me) => new Promise(async (res, rej) => {
 	const [userId, userIdErr] = $(params.userId).optional.type(ID).$;
 	if (userIdErr) return rej('invalid userId param');
 
+	// Get 'userIds' parameter
+	const [userIds, userIdsErr] = $(params.userIds).optional.array($().type(ID)).$;
+	if (userIdsErr) return rej('invalid userIds param');
+
 	// Get 'username' parameter
 	const [username, usernameErr] = $(params.username).optional.string().$;
 	if (usernameErr) return rej('invalid username param');
@@ -25,32 +29,40 @@ module.exports = (params, me) => new Promise(async (res, rej) => {
 	const [host, hostErr] = $(params.host).nullable.optional.string().$;
 	if (hostErr) return rej('invalid host param');
 
-	if (userId === undefined && typeof username !== 'string') {
-		return rej('userId or pair of username and host is required');
-	}
+	if (userIds) {
+		const users = await User.find({
+			_id: {
+				$in: userIds
+			}
+		});
 
-	// Lookup user
-	if (typeof host === 'string') {
-		try {
-			user = await resolveRemoteUser(username, host, cursorOption);
-		} catch (e) {
-			console.warn(`failed to resolve remote user: ${e}`);
-			return rej('failed to resolve remote user');
-		}
+		res(await Promise.all(users.map(u => pack(u, me, {
+			detail: true
+		}))));
 	} else {
-		const q = userId !== undefined
-			? { _id: userId }
-			: { usernameLower: username.toLowerCase(), host: null };
+		// Lookup user
+		if (typeof host === 'string') {
+			try {
+				user = await resolveRemoteUser(username, host, cursorOption);
+			} catch (e) {
+				console.warn(`failed to resolve remote user: ${e}`);
+				return rej('failed to resolve remote user');
+			}
+		} else {
+			const q = userId !== undefined
+				? { _id: userId }
+				: { usernameLower: username.toLowerCase(), host: null };
 
-		user = await User.findOne(q, cursorOption);
+			user = await User.findOne(q, cursorOption);
 
-		if (user === null) {
-			return rej('user not found');
+			if (user === null) {
+				return rej('user not found');
+			}
 		}
-	}
 
-	// Send response
-	res(await pack(user, me, {
-		detail: true
-	}));
+		// Send response
+		res(await pack(user, me, {
+			detail: true
+		}));
+	}
 });
-- 
cgit v1.2.3-freya


From 0f27b629244ebaba1036596ffd2044126de94d07 Mon Sep 17 00:00:00 2001
From: syuilo <syuilotan@yahoo.co.jp>
Date: Fri, 27 Apr 2018 19:12:15 +0900
Subject: Update dependencies :rocket:

---
 package.json                                       |  52 ++---
 src/client/app/desktop/views/pages/welcome.vue     |   9 +-
 src/client/app/mobile/views/pages/welcome.vue      | 253 ++++++++++-----------
 src/models/note-reaction.ts                        |   2 +-
 src/server/api/endpoints/aggregation/posts.ts      |   2 +-
 src/server/api/endpoints/aggregation/users.ts      |   2 +-
 .../api/endpoints/aggregation/users/activity.ts    |   4 +-
 .../api/endpoints/aggregation/users/followers.ts   |   2 +-
 .../api/endpoints/aggregation/users/following.ts   |   2 +-
 src/server/api/endpoints/aggregation/users/post.ts |   2 +-
 .../api/endpoints/aggregation/users/reaction.ts    |   2 +-
 src/server/api/endpoints/app/create.ts             |  10 +-
 src/server/api/endpoints/app/name_id/available.ts  |   2 +-
 src/server/api/endpoints/app/show.ts               |   4 +-
 src/server/api/endpoints/auth/accept.ts            |   2 +-
 src/server/api/endpoints/auth/session/generate.ts  |   2 +-
 src/server/api/endpoints/auth/session/show.ts      |   2 +-
 src/server/api/endpoints/auth/session/userkey.ts   |   4 +-
 src/server/api/endpoints/channels.ts               |   6 +-
 src/server/api/endpoints/channels/create.ts        |   2 +-
 src/server/api/endpoints/channels/notes.ts         |   8 +-
 src/server/api/endpoints/channels/show.ts          |   2 +-
 src/server/api/endpoints/channels/unwatch.ts       |   2 +-
 src/server/api/endpoints/channels/watch.ts         |   2 +-
 src/server/api/endpoints/drive/files.ts            |  10 +-
 src/server/api/endpoints/drive/files/create.ts     |   2 +-
 src/server/api/endpoints/drive/files/find.ts       |   4 +-
 src/server/api/endpoints/drive/files/show.ts       |   2 +-
 src/server/api/endpoints/drive/files/update.ts     |   6 +-
 .../api/endpoints/drive/files/upload_from_url.ts   |   4 +-
 src/server/api/endpoints/drive/folders.ts          |   8 +-
 src/server/api/endpoints/drive/folders/create.ts   |   4 +-
 src/server/api/endpoints/drive/folders/find.ts     |   4 +-
 src/server/api/endpoints/drive/folders/show.ts     |   2 +-
 src/server/api/endpoints/drive/folders/update.ts   |   6 +-
 src/server/api/endpoints/drive/stream.ts           |   8 +-
 src/server/api/endpoints/following/create.ts       |   2 +-
 src/server/api/endpoints/following/delete.ts       |   2 +-
 src/server/api/endpoints/following/stalk.ts        |   2 +-
 src/server/api/endpoints/following/unstalk.ts      |   2 +-
 src/server/api/endpoints/i/2fa/done.ts             |   2 +-
 src/server/api/endpoints/i/2fa/register.ts         |   2 +-
 src/server/api/endpoints/i/2fa/unregister.ts       |   2 +-
 src/server/api/endpoints/i/authorized_apps.ts      |   6 +-
 src/server/api/endpoints/i/change_password.ts      |   4 +-
 src/server/api/endpoints/i/favorites.ts            |   6 +-
 src/server/api/endpoints/i/notifications.ts        |  12 +-
 src/server/api/endpoints/i/pin.ts                  |   2 +-
 src/server/api/endpoints/i/regenerate_token.ts     |   2 +-
 src/server/api/endpoints/i/signin_history.ts       |   6 +-
 src/server/api/endpoints/i/update.ts               |  16 +-
 .../api/endpoints/i/update_client_setting.ts       |   4 +-
 src/server/api/endpoints/i/update_home.ts          |   6 +-
 src/server/api/endpoints/i/update_mobile_home.ts   |   6 +-
 src/server/api/endpoints/messaging/history.ts      |   2 +-
 src/server/api/endpoints/messaging/messages.ts     |  10 +-
 .../api/endpoints/messaging/messages/create.ts     |   6 +-
 src/server/api/endpoints/mute/create.ts            |   2 +-
 src/server/api/endpoints/mute/delete.ts            |   2 +-
 src/server/api/endpoints/mute/list.ts              |   6 +-
 src/server/api/endpoints/my/apps.ts                |   4 +-
 src/server/api/endpoints/notes.ts                  |  16 +-
 src/server/api/endpoints/notes/context.ts          |   6 +-
 src/server/api/endpoints/notes/create.ts           |  22 +-
 src/server/api/endpoints/notes/favorites/create.ts |   2 +-
 src/server/api/endpoints/notes/favorites/delete.ts |   2 +-
 src/server/api/endpoints/notes/global-timeline.ts  |  10 +-
 src/server/api/endpoints/notes/local-timeline.ts   |  10 +-
 src/server/api/endpoints/notes/mentions.ts         |   8 +-
 .../api/endpoints/notes/polls/recommendation.ts    |   4 +-
 src/server/api/endpoints/notes/polls/vote.ts       |   4 +-
 src/server/api/endpoints/notes/reactions.ts        |   8 +-
 src/server/api/endpoints/notes/reactions/create.ts |   4 +-
 src/server/api/endpoints/notes/reactions/delete.ts |   2 +-
 src/server/api/endpoints/notes/replies.ts          |   8 +-
 src/server/api/endpoints/notes/reposts.ts          |   8 +-
 src/server/api/endpoints/notes/search.ts           |  30 +--
 src/server/api/endpoints/notes/show.ts             |   2 +-
 src/server/api/endpoints/notes/timeline.ts         |  14 +-
 src/server/api/endpoints/notes/trend.ts            |  12 +-
 .../api/endpoints/notes/user-list-timeline.ts      |  16 +-
 src/server/api/endpoints/othello/games.ts          |   8 +-
 src/server/api/endpoints/othello/games/show.ts     |   2 +-
 src/server/api/endpoints/othello/match.ts          |   2 +-
 src/server/api/endpoints/sw/register.ts            |   6 +-
 src/server/api/endpoints/username/available.ts     |   2 +-
 src/server/api/endpoints/users.ts                  |   6 +-
 src/server/api/endpoints/users/followers.ts        |   8 +-
 src/server/api/endpoints/users/following.ts        |   8 +-
 .../users/get_frequently_replied_users.ts          |   4 +-
 src/server/api/endpoints/users/lists/create.ts     |   2 +-
 src/server/api/endpoints/users/lists/push.ts       |   4 +-
 src/server/api/endpoints/users/lists/show.ts       |   2 +-
 src/server/api/endpoints/users/notes.ts            |  20 +-
 src/server/api/endpoints/users/recommendation.ts   |   4 +-
 src/server/api/endpoints/users/search.ts           |   6 +-
 .../api/endpoints/users/search_by_username.ts      |   6 +-
 src/server/api/endpoints/users/show.ts             |   8 +-
 webpack.config.ts                                  |  43 +++-
 99 files changed, 449 insertions(+), 436 deletions(-)

(limited to 'src/server/api/endpoints/users/show.ts')

diff --git a/package.json b/package.json
index d37bbc040d..515d8e8401 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
 		"@prezzemolo/rap": "0.1.2",
 		"@prezzemolo/zip": "0.0.3",
 		"@types/bcryptjs": "2.4.1",
-		"@types/chai": "4.1.2",
+		"@types/chai": "4.1.3",
 		"@types/chai-http": "3.0.4",
 		"@types/debug": "0.0.30",
 		"@types/deep-equal": "1.0.1",
@@ -51,22 +51,22 @@
 		"@types/js-yaml": "3.11.1",
 		"@types/koa": "2.0.45",
 		"@types/koa-bodyparser": "4.2.0",
-		"@types/koa-compress": "^2.0.8",
+		"@types/koa-compress": "2.0.8",
 		"@types/koa-favicon": "2.0.19",
-		"@types/koa-logger": "^3.1.0",
+		"@types/koa-logger": "3.1.0",
 		"@types/koa-mount": "3.0.1",
 		"@types/koa-multer": "1.0.0",
-		"@types/koa-router": "7.0.27",
+		"@types/koa-router": "7.0.28",
 		"@types/koa-send": "4.1.1",
 		"@types/koa__cors": "2.2.2",
 		"@types/kue": "0.11.8",
 		"@types/license-checker": "15.0.0",
 		"@types/mkdirp": "0.5.2",
-		"@types/mocha": "5.0.0",
+		"@types/mocha": "5.2.0",
 		"@types/mongodb": "3.0.15",
 		"@types/monk": "6.0.0",
 		"@types/ms": "0.7.30",
-		"@types/node": "9.6.5",
+		"@types/node": "9.6.6",
 		"@types/nopt": "3.0.29",
 		"@types/pug": "2.0.4",
 		"@types/qrcode": "0.8.1",
@@ -79,7 +79,7 @@
 		"@types/speakeasy": "2.0.2",
 		"@types/tmp": "0.0.33",
 		"@types/uuid": "3.4.3",
-		"@types/webpack": "4.1.3",
+		"@types/webpack": "4.1.4",
 		"@types/webpack-stream": "3.2.10",
 		"@types/websocket": "0.0.38",
 		"@types/ws": "4.0.2",
@@ -88,10 +88,10 @@
 		"autwh": "0.1.0",
 		"bcryptjs": "2.4.3",
 		"bootstrap-vue": "2.0.0-rc.6",
-		"cafy": "6.0.0",
+		"cafy": "7.0.1",
 		"chai": "4.1.2",
 		"chai-http": "4.0.0",
-		"chalk": "2.4.0",
+		"chalk": "2.4.1",
 		"crc-32": "1.2.0",
 		"css-loader": "0.28.11",
 		"debug": "3.1.0",
@@ -100,12 +100,12 @@
 		"diskusage": "0.2.4",
 		"dompurify": "1.0.3",
 		"elasticsearch": "14.2.2",
-		"element-ui": "2.3.4",
+		"element-ui": "2.3.6",
 		"emojilib": "2.2.12",
 		"escape-regexp": "0.0.1",
 		"eslint": "4.19.1",
-		"eslint-plugin-vue": "4.4.0",
-		"eventemitter3": "3.0.1",
+		"eslint-plugin-vue": "4.5.0",
+		"eventemitter3": "3.1.0",
 		"exif-js": "2.3.0",
 		"file-loader": "1.1.11",
 		"file-type": "7.6.0",
@@ -133,30 +133,30 @@
 		"is-root": "2.0.0",
 		"is-url": "1.2.4",
 		"js-yaml": "3.11.0",
-		"jsdom": "11.8.0",
-		"koa": "2.5.0",
+		"jsdom": "11.9.0",
+		"koa": "2.5.1",
 		"koa-bodyparser": "4.2.0",
 		"koa-compress": "3.0.0",
 		"koa-favicon": "2.0.1",
-		"koa-json-body": "^5.3.0",
-		"koa-logger": "^3.2.0",
+		"koa-json-body": "5.3.0",
+		"koa-logger": "3.2.0",
 		"koa-mount": "3.0.0",
 		"koa-multer": "1.0.2",
 		"koa-router": "7.4.0",
 		"koa-send": "4.1.3",
-		"koa-slow": "^2.1.0",
+		"koa-slow": "2.1.0",
 		"kue": "0.11.6",
 		"license-checker": "18.0.0",
 		"loader-utils": "1.1.0",
 		"mecab-async": "0.1.2",
 		"mkdirp": "0.5.1",
-		"mocha": "5.1.0",
+		"mocha": "5.1.1",
 		"moji": "0.5.1",
 		"mongodb": "3.0.7",
 		"monk": "6.0.5",
 		"ms": "2.1.1",
 		"nan": "2.10.0",
-		"node-sass": "4.8.3",
+		"node-sass": "4.9.0",
 		"node-sass-json-importer": "3.2.0",
 		"nopt": "4.0.1",
 		"nprogress": "0.2.0",
@@ -190,9 +190,9 @@
 		"textarea-caret": "3.1.0",
 		"tmp": "0.0.33",
 		"ts-loader": "4.2.0",
-		"ts-node": "6.0.0",
+		"ts-node": "6.0.1",
 		"tslint": "5.9.1",
-		"typescript": "2.8.1",
+		"typescript": "2.8.3",
 		"typescript-eslint-parser": "15.0.0",
 		"uglify-es": "3.3.9",
 		"url-loader": "1.0.1",
@@ -201,18 +201,18 @@
 		"vue": "2.5.16",
 		"vue-cropperjs": "2.2.0",
 		"vue-js-modal": "1.3.13",
-		"vue-json-tree-view": "2.1.3",
-		"vue-loader": "14.2.2",
+		"vue-json-tree-view": "2.1.4",
+		"vue-loader": "15.0.3",
 		"vue-router": "3.0.1",
 		"vue-template-compiler": "2.5.16",
 		"vuedraggable": "2.16.0",
-		"vuex": "^3.0.1",
+		"vuex": "3.0.1",
 		"web-push": "3.3.0",
 		"webfinger.js": "2.6.6",
 		"webpack": "4.6.0",
-		"webpack-cli": "2.0.14",
+		"webpack-cli": "2.0.15",
 		"webpack-replace-loader": "1.3.0",
-		"websocket": "1.0.25",
+		"websocket": "1.0.26",
 		"ws": "5.1.1",
 		"xev": "2.0.0"
 	}
diff --git a/src/client/app/desktop/views/pages/welcome.vue b/src/client/app/desktop/views/pages/welcome.vue
index 93d17b58fe..6bda29326f 100644
--- a/src/client/app/desktop/views/pages/welcome.vue
+++ b/src/client/app/desktop/views/pages/welcome.vue
@@ -125,7 +125,8 @@ export default Vue.extend({
 	flex 1
 	$width = 1000px
 
-	background-image url('/assets/welcome-bg.svg')
+	background linear-gradient(to bottom, #1e1d65, #bd6659)
+	//background-image url('/assets/welcome-bg.svg')
 	background-size cover
 	background-position top center
 
@@ -309,9 +310,3 @@ export default Vue.extend({
 	a
 		color #666
 </style>
-
-<style lang="stylus">
-html
-body
-	background linear-gradient(to bottom, #1e1d65, #bd6659)
-</style>
diff --git a/src/client/app/mobile/views/pages/welcome.vue b/src/client/app/mobile/views/pages/welcome.vue
index 27baf8bee4..1bc7ffd862 100644
--- a/src/client/app/mobile/views/pages/welcome.vue
+++ b/src/client/app/mobile/views/pages/welcome.vue
@@ -1,33 +1,35 @@
 <template>
 <div class="welcome">
-	<h1><b>Misskey</b>へようこそ</h1>
-	<p>Twitter風ミニブログSNS、Misskeyへようこそ。共有したいことを投稿したり、タイムラインでみんなの投稿を読むこともできます。<br><a href="/signup">アカウントを作成する</a></p>
-	<div class="form">
-		<p>%fa:lock% ログイン</p>
-		<div>
-			<form @submit.prevent="onSubmit">
-				<input v-model="username" type="text" pattern="^[a-zA-Z0-9_]+$" placeholder="ユーザー名" autofocus required @change="onUsernameChange"/>
-				<input v-model="password" type="password" placeholder="パスワード" required/>
-				<input v-if="user && user.twoFactorEnabled" v-model="token" type="number" placeholder="トークン" required/>
-				<button type="submit" :disabled="signing">{{ signing ? 'ログインしています' : 'ログイン' }}</button>
-			</form>
+	<div>
+		<h1><b>Misskey</b>へようこそ</h1>
+		<p>Twitter風ミニブログSNS、Misskeyへようこそ。共有したいことを投稿したり、タイムラインでみんなの投稿を読むこともできます。<br><a href="/signup">アカウントを作成する</a></p>
+		<div class="form">
+			<p>%fa:lock% ログイン</p>
 			<div>
-				<a :href="`${apiUrl}/signin/twitter`">Twitterでログイン</a>
+				<form @submit.prevent="onSubmit">
+					<input v-model="username" type="text" pattern="^[a-zA-Z0-9_]+$" placeholder="ユーザー名" autofocus required @change="onUsernameChange"/>
+					<input v-model="password" type="password" placeholder="パスワード" required/>
+					<input v-if="user && user.twoFactorEnabled" v-model="token" type="number" placeholder="トークン" required/>
+					<button type="submit" :disabled="signing">{{ signing ? 'ログインしています' : 'ログイン' }}</button>
+				</form>
+				<div>
+					<a :href="`${apiUrl}/signin/twitter`">Twitterでログイン</a>
+				</div>
 			</div>
 		</div>
+		<div class="tl">
+			<p>%fa:comments R% タイムラインを見てみる</p>
+			<mk-welcome-timeline/>
+		</div>
+		<div class="users">
+			<router-link v-for="user in users" :key="user.id" class="avatar-anchor" :to="`/@${user.username}`">
+				<img class="avatar" :src="`${user.avatarUrl}?thumbnail&size=64`" alt="avatar"/>
+			</router-link>
+		</div>
+		<footer>
+			<small>{{ copyright }}</small>
+		</footer>
 	</div>
-	<div class="tl">
-		<p>%fa:comments R% タイムラインを見てみる</p>
-		<mk-welcome-timeline/>
-	</div>
-	<div class="users">
-		<router-link v-for="user in users" :key="user.id" class="avatar-anchor" :to="`/@${user.username}`">
-			<img class="avatar" :src="`${user.avatarUrl}?thumbnail&size=64`" alt="avatar"/>
-		</router-link>
-	</div>
-	<footer>
-		<small>{{ copyright }}</small>
-	</footer>
 </div>
 </template>
 
@@ -84,123 +86,120 @@ export default Vue.extend({
 
 <style lang="stylus" scoped>
 .welcome
-	padding 16px
-	margin 0 auto
-	max-width 500px
-
-	h1
-		margin 0
-		padding 8px
-		font-size 1.5em
-		font-weight normal
-		color #cacac3
-
-		& + p
-			margin 0 0 16px 0
-			padding 0 8px 0 8px
-			color #949fa9
-
-	.form
-		margin-bottom 16px
-		background #fff
-		border solid 1px rgba(0, 0, 0, 0.2)
-		border-radius 8px
-		overflow hidden
-
-		> p
-			margin 0
-			padding 12px 20px
-			color #555
-			background #f5f5f5
-			border-bottom solid 1px #ddd
+	background linear-gradient(to bottom, #1e1d65, #bd6659)
 
-		> div
+	> div
+		padding 16px
+		margin 0 auto
+		max-width 500px
 
-			> form
-				padding 16px
+		h1
+			margin 0
+			padding 8px
+			font-size 1.5em
+			font-weight normal
+			color #cacac3
+
+			& + p
+				margin 0 0 16px 0
+				padding 0 8px 0 8px
+				color #949fa9
+
+		.form
+			margin-bottom 16px
+			background #fff
+			border solid 1px rgba(0, 0, 0, 0.2)
+			border-radius 8px
+			overflow hidden
+
+			> p
+				margin 0
+				padding 12px 20px
+				color #555
+				background #f5f5f5
 				border-bottom solid 1px #ddd
 
-				input
-					display block
-					padding 12px
-					margin 0 0 16px 0
-					width 100%
-					font-size 1em
-					color rgba(0, 0, 0, 0.7)
-					background #fff
-					outline none
-					border solid 1px #ddd
-					border-radius 4px
-
-				button
-					display block
-					width 100%
-					padding 10px
-					margin 0
-					color #333
-					font-size 1em
-					text-align center
-					text-decoration none
-					text-shadow 0 1px 0 rgba(255, 255, 255, 0.9)
-					background-image linear-gradient(#fafafa, #eaeaea)
-					border 1px solid #ddd
-					border-bottom-color #cecece
-					border-radius 4px
-
-					&:active
-						background-color #767676
-						background-image none
-						border-color #444
-						box-shadow 0 1px 3px rgba(0, 0, 0, 0.075), inset 0 0 5px rgba(0, 0, 0, 0.2)
-
 			> div
-				padding 16px
-				text-align center
-
-	> .tl
-		background #fff
-		border solid 1px rgba(0, 0, 0, 0.2)
-		border-radius 8px
-		overflow hidden
 
-		> p
-			margin 0
-			padding 12px 20px
-			color #555
-			background #f5f5f5
-			border-bottom solid 1px #ddd
+				> form
+					padding 16px
+					border-bottom solid 1px #ddd
+
+					input
+						display block
+						padding 12px
+						margin 0 0 16px 0
+						width 100%
+						font-size 1em
+						color rgba(0, 0, 0, 0.7)
+						background #fff
+						outline none
+						border solid 1px #ddd
+						border-radius 4px
+
+					button
+						display block
+						width 100%
+						padding 10px
+						margin 0
+						color #333
+						font-size 1em
+						text-align center
+						text-decoration none
+						text-shadow 0 1px 0 rgba(255, 255, 255, 0.9)
+						background-image linear-gradient(#fafafa, #eaeaea)
+						border 1px solid #ddd
+						border-bottom-color #cecece
+						border-radius 4px
+
+						&:active
+							background-color #767676
+							background-image none
+							border-color #444
+							box-shadow 0 1px 3px rgba(0, 0, 0, 0.075), inset 0 0 5px rgba(0, 0, 0, 0.2)
+
+				> div
+					padding 16px
+					text-align center
 
-		> .mk-welcome-timeline
-			max-height 300px
-			overflow auto
+		> .tl
+			background #fff
+			border solid 1px rgba(0, 0, 0, 0.2)
+			border-radius 8px
+			overflow hidden
+
+			> p
+				margin 0
+				padding 12px 20px
+				color #555
+				background #f5f5f5
+				border-bottom solid 1px #ddd
 
-	> .users
-		margin 12px 0 0 0
+			> .mk-welcome-timeline
+				max-height 300px
+				overflow auto
 
-		> *
-			display inline-block
-			margin 4px
+		> .users
+			margin 12px 0 0 0
 
 			> *
 				display inline-block
-				width 38px
-				height 38px
-				vertical-align top
-				border-radius 6px
+				margin 4px
 
-	> footer
-		text-align center
-		color #fff
+				> *
+					display inline-block
+					width 38px
+					height 38px
+					vertical-align top
+					border-radius 6px
 
-		> small
-			display block
-			margin 16px 0 0 0
-			opacity 0.7
+		> footer
+			text-align center
+			color #fff
 
-</style>
+			> small
+				display block
+				margin 16px 0 0 0
+				opacity 0.7
 
-<style lang="stylus">
-html
-body
-	background linear-gradient(to bottom, #1e1d65, #bd6659)
 </style>
diff --git a/src/models/note-reaction.ts b/src/models/note-reaction.ts
index f78b0d9d01..7891ebdf17 100644
--- a/src/models/note-reaction.ts
+++ b/src/models/note-reaction.ts
@@ -1,5 +1,5 @@
 import * as mongo from 'mongodb';
-import $ from 'cafy'; import ID from '../../../../cafy-id';
+import $ from 'cafy';
 import deepcopy = require('deepcopy');
 import db from '../db/mongodb';
 import Reaction from './note-reaction';
diff --git a/src/server/api/endpoints/aggregation/posts.ts b/src/server/api/endpoints/aggregation/posts.ts
index 17bead2808..87e9af3a56 100644
--- a/src/server/api/endpoints/aggregation/posts.ts
+++ b/src/server/api/endpoints/aggregation/posts.ts
@@ -9,7 +9,7 @@ import Note from '../../../../models/note';
  */
 module.exports = params => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 365, limitErr] = $(params.limit).optional.number().range(1, 365).$;
+	const [limit = 365, limitErr] = $(params.limit).optional.number().range(1, 365).get();
 	if (limitErr) return rej('invalid limit param');
 
 	const datas = await Note
diff --git a/src/server/api/endpoints/aggregation/users.ts b/src/server/api/endpoints/aggregation/users.ts
index b0a7632f24..831d771333 100644
--- a/src/server/api/endpoints/aggregation/users.ts
+++ b/src/server/api/endpoints/aggregation/users.ts
@@ -9,7 +9,7 @@ import User from '../../../../models/user';
  */
 module.exports = params => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 365, limitErr] = $(params.limit).optional.number().range(1, 365).$;
+	const [limit = 365, limitErr] = $(params.limit).optional.number().range(1, 365).get();
 	if (limitErr) return rej('invalid limit param');
 
 	const users = await User
diff --git a/src/server/api/endpoints/aggregation/users/activity.ts b/src/server/api/endpoints/aggregation/users/activity.ts
index d36e07a441..4a982ac3ba 100644
--- a/src/server/api/endpoints/aggregation/users/activity.ts
+++ b/src/server/api/endpoints/aggregation/users/activity.ts
@@ -12,11 +12,11 @@ import Note from '../../../../../models/note';
  */
 module.exports = (params) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 365, limitErr] = $(params.limit).optional.number().range(1, 365).$;
+	const [limit = 365, limitErr] = $(params.limit).optional.number().range(1, 365).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).$;
+	const [userId, userIdErr] = $(params.userId).type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// Lookup user
diff --git a/src/server/api/endpoints/aggregation/users/followers.ts b/src/server/api/endpoints/aggregation/users/followers.ts
index a6dd29e735..3079542c67 100644
--- a/src/server/api/endpoints/aggregation/users/followers.ts
+++ b/src/server/api/endpoints/aggregation/users/followers.ts
@@ -10,7 +10,7 @@ import FollowedLog from '../../../../../models/followed-log';
  */
 module.exports = (params) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).$;
+	const [userId, userIdErr] = $(params.userId).type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// Lookup user
diff --git a/src/server/api/endpoints/aggregation/users/following.ts b/src/server/api/endpoints/aggregation/users/following.ts
index 7336f392fe..4efe20230d 100644
--- a/src/server/api/endpoints/aggregation/users/following.ts
+++ b/src/server/api/endpoints/aggregation/users/following.ts
@@ -10,7 +10,7 @@ import FollowingLog from '../../../../../models/following-log';
  */
 module.exports = (params) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).$;
+	const [userId, userIdErr] = $(params.userId).type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// Lookup user
diff --git a/src/server/api/endpoints/aggregation/users/post.ts b/src/server/api/endpoints/aggregation/users/post.ts
index c5a5e5ffca..fc6541065b 100644
--- a/src/server/api/endpoints/aggregation/users/post.ts
+++ b/src/server/api/endpoints/aggregation/users/post.ts
@@ -10,7 +10,7 @@ import Note from '../../../../../models/note';
  */
 module.exports = (params) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).$;
+	const [userId, userIdErr] = $(params.userId).type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// Lookup user
diff --git a/src/server/api/endpoints/aggregation/users/reaction.ts b/src/server/api/endpoints/aggregation/users/reaction.ts
index f1664823cd..ea3363e1aa 100644
--- a/src/server/api/endpoints/aggregation/users/reaction.ts
+++ b/src/server/api/endpoints/aggregation/users/reaction.ts
@@ -13,7 +13,7 @@ import Reaction from '../../../../../models/note-reaction';
  */
 module.exports = (params) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).$;
+	const [userId, userIdErr] = $(params.userId).type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// Lookup user
diff --git a/src/server/api/endpoints/app/create.ts b/src/server/api/endpoints/app/create.ts
index f403429261..97154690fa 100644
--- a/src/server/api/endpoints/app/create.ts
+++ b/src/server/api/endpoints/app/create.ts
@@ -67,24 +67,24 @@ import App, { isValidNameId, pack } from '../../../../models/app';
  */
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'nameId' parameter
-	const [nameId, nameIdErr] = $(params.nameId).string().pipe(isValidNameId).$;
+	const [nameId, nameIdErr] = $(params.nameId).string().pipe(isValidNameId).get();
 	if (nameIdErr) return rej('invalid nameId param');
 
 	// Get 'name' parameter
-	const [name, nameErr] = $(params.name).string().$;
+	const [name, nameErr] = $(params.name).string().get();
 	if (nameErr) return rej('invalid name param');
 
 	// Get 'description' parameter
-	const [description, descriptionErr] = $(params.description).string().$;
+	const [description, descriptionErr] = $(params.description).string().get();
 	if (descriptionErr) return rej('invalid description param');
 
 	// Get 'permission' parameter
-	const [permission, permissionErr] = $(params.permission).array($().string()).unique().$;
+	const [permission, permissionErr] = $(params.permission).array($().string()).unique().get();
 	if (permissionErr) return rej('invalid permission param');
 
 	// Get 'callbackUrl' parameter
 	// TODO: Check it is valid url
-	const [callbackUrl = null, callbackUrlErr] = $(params.callbackUrl).optional.nullable.string().$;
+	const [callbackUrl = null, callbackUrlErr] = $(params.callbackUrl).optional.nullable.string().get();
 	if (callbackUrlErr) return rej('invalid callbackUrl param');
 
 	// Generate secret
diff --git a/src/server/api/endpoints/app/name_id/available.ts b/src/server/api/endpoints/app/name_id/available.ts
index ec2d692412..8c32a780ec 100644
--- a/src/server/api/endpoints/app/name_id/available.ts
+++ b/src/server/api/endpoints/app/name_id/available.ts
@@ -42,7 +42,7 @@ import { isValidNameId } from '../../../../../models/app';
  */
 module.exports = async (params) => new Promise(async (res, rej) => {
 	// Get 'nameId' parameter
-	const [nameId, nameIdErr] = $(params.nameId).string().pipe(isValidNameId).$;
+	const [nameId, nameIdErr] = $(params.nameId).string().pipe(isValidNameId).get();
 	if (nameIdErr) return rej('invalid nameId param');
 
 	// Get exist
diff --git a/src/server/api/endpoints/app/show.ts b/src/server/api/endpoints/app/show.ts
index 92a03b9838..8408850285 100644
--- a/src/server/api/endpoints/app/show.ts
+++ b/src/server/api/endpoints/app/show.ts
@@ -41,11 +41,11 @@ module.exports = (params, user, app) => new Promise(async (res, rej) => {
 	const isSecure = user != null && app == null;
 
 	// Get 'appId' parameter
-	const [appId, appIdErr] = $(params.appId).optional.type(ID).$;
+	const [appId, appIdErr] = $(params.appId).optional.type(ID).get();
 	if (appIdErr) return rej('invalid appId param');
 
 	// Get 'nameId' parameter
-	const [nameId, nameIdErr] = $(params.nameId).optional.string().$;
+	const [nameId, nameIdErr] = $(params.nameId).optional.string().get();
 	if (nameIdErr) return rej('invalid nameId param');
 
 	if (appId === undefined && nameId === undefined) {
diff --git a/src/server/api/endpoints/auth/accept.ts b/src/server/api/endpoints/auth/accept.ts
index b6297d663d..cb271f9d67 100644
--- a/src/server/api/endpoints/auth/accept.ts
+++ b/src/server/api/endpoints/auth/accept.ts
@@ -40,7 +40,7 @@ import AccessToken from '../../../../models/access-token';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'token' parameter
-	const [token, tokenErr] = $(params.token).string().$;
+	const [token, tokenErr] = $(params.token).string().get();
 	if (tokenErr) return rej('invalid token param');
 
 	// Fetch token
diff --git a/src/server/api/endpoints/auth/session/generate.ts b/src/server/api/endpoints/auth/session/generate.ts
index 7c475dbe26..8d243b85cf 100644
--- a/src/server/api/endpoints/auth/session/generate.ts
+++ b/src/server/api/endpoints/auth/session/generate.ts
@@ -46,7 +46,7 @@ import config from '../../../../../config';
  */
 module.exports = (params) => new Promise(async (res, rej) => {
 	// Get 'appSecret' parameter
-	const [appSecret, appSecretErr] = $(params.appSecret).string().$;
+	const [appSecret, appSecretErr] = $(params.appSecret).string().get();
 	if (appSecretErr) return rej('invalid appSecret param');
 
 	// Lookup app
diff --git a/src/server/api/endpoints/auth/session/show.ts b/src/server/api/endpoints/auth/session/show.ts
index f7f0b087b7..87a43c94b9 100644
--- a/src/server/api/endpoints/auth/session/show.ts
+++ b/src/server/api/endpoints/auth/session/show.ts
@@ -53,7 +53,7 @@ import AuthSess, { pack } from '../../../../../models/auth-session';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'token' parameter
-	const [token, tokenErr] = $(params.token).string().$;
+	const [token, tokenErr] = $(params.token).string().get();
 	if (tokenErr) return rej('invalid token param');
 
 	// Lookup session
diff --git a/src/server/api/endpoints/auth/session/userkey.ts b/src/server/api/endpoints/auth/session/userkey.ts
index ddb67cb451..29642e6327 100644
--- a/src/server/api/endpoints/auth/session/userkey.ts
+++ b/src/server/api/endpoints/auth/session/userkey.ts
@@ -51,7 +51,7 @@ import { pack } from '../../../../../models/user';
  */
 module.exports = (params) => new Promise(async (res, rej) => {
 	// Get 'appSecret' parameter
-	const [appSecret, appSecretErr] = $(params.appSecret).string().$;
+	const [appSecret, appSecretErr] = $(params.appSecret).string().get();
 	if (appSecretErr) return rej('invalid appSecret param');
 
 	// Lookup app
@@ -64,7 +64,7 @@ module.exports = (params) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'token' parameter
-	const [token, tokenErr] = $(params.token).string().$;
+	const [token, tokenErr] = $(params.token).string().get();
 	if (tokenErr) return rej('invalid token param');
 
 	// Fetch token
diff --git a/src/server/api/endpoints/channels.ts b/src/server/api/endpoints/channels.ts
index b68107ed7d..9fd0fcb89c 100644
--- a/src/server/api/endpoints/channels.ts
+++ b/src/server/api/endpoints/channels.ts
@@ -13,15 +13,15 @@ import Channel, { pack } from '../../../models/channel';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/channels/create.ts b/src/server/api/endpoints/channels/create.ts
index a737fcb152..2574e0923d 100644
--- a/src/server/api/endpoints/channels/create.ts
+++ b/src/server/api/endpoints/channels/create.ts
@@ -11,7 +11,7 @@ import { pack } from '../../../../models/channel';
  */
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'title' parameter
-	const [title, titleErr] = $(params.title).string().range(1, 100).$;
+	const [title, titleErr] = $(params.title).string().range(1, 100).get();
 	if (titleErr) return rej('invalid title param');
 
 	// Create a channel
diff --git a/src/server/api/endpoints/channels/notes.ts b/src/server/api/endpoints/channels/notes.ts
index 73a69c6d2a..a83cdb34c4 100644
--- a/src/server/api/endpoints/channels/notes.ts
+++ b/src/server/api/endpoints/channels/notes.ts
@@ -10,15 +10,15 @@ import Note, { pack } from '../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 1000, limitErr] = $(params.limit).optional.number().range(1, 1000).$;
+	const [limit = 1000, limitErr] = $(params.limit).optional.number().range(1, 1000).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
@@ -27,7 +27,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'channelId' parameter
-	const [channelId, channelIdErr] = $(params.channelId).type(ID).$;
+	const [channelId, channelIdErr] = $(params.channelId).type(ID).get();
 	if (channelIdErr) return rej('invalid channelId param');
 
 	// Fetch channel
diff --git a/src/server/api/endpoints/channels/show.ts b/src/server/api/endpoints/channels/show.ts
index 3f468937ed..d5ca4ba3b7 100644
--- a/src/server/api/endpoints/channels/show.ts
+++ b/src/server/api/endpoints/channels/show.ts
@@ -9,7 +9,7 @@ import Channel, { IChannel, pack } from '../../../../models/channel';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'channelId' parameter
-	const [channelId, channelIdErr] = $(params.channelId).type(ID).$;
+	const [channelId, channelIdErr] = $(params.channelId).type(ID).get();
 	if (channelIdErr) return rej('invalid channelId param');
 
 	// Fetch channel
diff --git a/src/server/api/endpoints/channels/unwatch.ts b/src/server/api/endpoints/channels/unwatch.ts
index 6ada3c9e1b..9385e209df 100644
--- a/src/server/api/endpoints/channels/unwatch.ts
+++ b/src/server/api/endpoints/channels/unwatch.ts
@@ -10,7 +10,7 @@ import Watching from '../../../../models/channel-watching';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'channelId' parameter
-	const [channelId, channelIdErr] = $(params.channelId).type(ID).$;
+	const [channelId, channelIdErr] = $(params.channelId).type(ID).get();
 	if (channelIdErr) return rej('invalid channelId param');
 
 	//#region Fetch channel
diff --git a/src/server/api/endpoints/channels/watch.ts b/src/server/api/endpoints/channels/watch.ts
index 7880c34652..ceda3b130a 100644
--- a/src/server/api/endpoints/channels/watch.ts
+++ b/src/server/api/endpoints/channels/watch.ts
@@ -10,7 +10,7 @@ import Watching from '../../../../models/channel-watching';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'channelId' parameter
-	const [channelId, channelIdErr] = $(params.channelId).type(ID).$;
+	const [channelId, channelIdErr] = $(params.channelId).type(ID).get();
 	if (channelIdErr) return rej('invalid channelId param');
 
 	//#region Fetch channel
diff --git a/src/server/api/endpoints/drive/files.ts b/src/server/api/endpoints/drive/files.ts
index 7f78ef9daa..52dfe60faf 100644
--- a/src/server/api/endpoints/drive/files.ts
+++ b/src/server/api/endpoints/drive/files.ts
@@ -9,15 +9,15 @@ import DriveFile, { pack } from '../../../../models/drive-file';
  */
 module.exports = async (params, user, app) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) throw 'invalid limit param';
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) throw 'invalid sinceId param';
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) throw 'invalid untilId param';
 
 	// Check if both of sinceId and untilId is specified
@@ -26,11 +26,11 @@ module.exports = async (params, user, app) => {
 	}
 
 	// Get 'folderId' parameter
-	const [folderId = null, folderIdErr] = $(params.folderId).optional.nullable.type(ID).$;
+	const [folderId = null, folderIdErr] = $(params.folderId).optional.nullable.type(ID).get();
 	if (folderIdErr) throw 'invalid folderId param';
 
 	// Get 'type' parameter
-	const [type, typeErr] = $(params.type).optional.string().match(/^[a-zA-Z\/\-\*]+$/).$;
+	const [type, typeErr] = $(params.type).optional.string().match(/^[a-zA-Z\/\-\*]+$/).get();
 	if (typeErr) throw 'invalid type param';
 
 	// Construct query
diff --git a/src/server/api/endpoints/drive/files/create.ts b/src/server/api/endpoints/drive/files/create.ts
index 3d5048732d..b1a4bc9c52 100644
--- a/src/server/api/endpoints/drive/files/create.ts
+++ b/src/server/api/endpoints/drive/files/create.ts
@@ -29,7 +29,7 @@ module.exports = async (file, params, user): Promise<any> => {
 	}
 
 	// Get 'folderId' parameter
-	const [folderId = null, folderIdErr] = $(params.folderId).optional.nullable.type(ID).$;
+	const [folderId = null, folderIdErr] = $(params.folderId).optional.nullable.type(ID).get();
 	if (folderIdErr) throw 'invalid folderId param';
 
 	try {
diff --git a/src/server/api/endpoints/drive/files/find.ts b/src/server/api/endpoints/drive/files/find.ts
index 5d49577983..4636d85050 100644
--- a/src/server/api/endpoints/drive/files/find.ts
+++ b/src/server/api/endpoints/drive/files/find.ts
@@ -9,11 +9,11 @@ import DriveFile, { pack } from '../../../../../models/drive-file';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'name' parameter
-	const [name, nameErr] = $(params.name).string().$;
+	const [name, nameErr] = $(params.name).string().get();
 	if (nameErr) return rej('invalid name param');
 
 	// Get 'folderId' parameter
-	const [folderId = null, folderIdErr] = $(params.folderId).optional.nullable.type(ID).$;
+	const [folderId = null, folderIdErr] = $(params.folderId).optional.nullable.type(ID).get();
 	if (folderIdErr) return rej('invalid folderId param');
 
 	// Issue query
diff --git a/src/server/api/endpoints/drive/files/show.ts b/src/server/api/endpoints/drive/files/show.ts
index 93c3a63031..7e62e12fad 100644
--- a/src/server/api/endpoints/drive/files/show.ts
+++ b/src/server/api/endpoints/drive/files/show.ts
@@ -9,7 +9,7 @@ import DriveFile, { pack } from '../../../../../models/drive-file';
  */
 module.exports = async (params, user) => {
 	// Get 'fileId' parameter
-	const [fileId, fileIdErr] = $(params.fileId).type(ID).$;
+	const [fileId, fileIdErr] = $(params.fileId).type(ID).get();
 	if (fileIdErr) throw 'invalid fileId param';
 
 	// Fetch file
diff --git a/src/server/api/endpoints/drive/files/update.ts b/src/server/api/endpoints/drive/files/update.ts
index 3ac157b530..c80e26771c 100644
--- a/src/server/api/endpoints/drive/files/update.ts
+++ b/src/server/api/endpoints/drive/files/update.ts
@@ -11,7 +11,7 @@ import { publishDriveStream } from '../../../../../publishers/stream';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'fileId' parameter
-	const [fileId, fileIdErr] = $(params.fileId).type(ID).$;
+	const [fileId, fileIdErr] = $(params.fileId).type(ID).get();
 	if (fileIdErr) return rej('invalid fileId param');
 
 	// Fetch file
@@ -26,12 +26,12 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'name' parameter
-	const [name, nameErr] = $(params.name).optional.string().pipe(validateFileName).$;
+	const [name, nameErr] = $(params.name).optional.string().pipe(validateFileName).get();
 	if (nameErr) return rej('invalid name param');
 	if (name) file.filename = name;
 
 	// Get 'folderId' parameter
-	const [folderId, folderIdErr] = $(params.folderId).optional.nullable.type(ID).$;
+	const [folderId, folderIdErr] = $(params.folderId).optional.nullable.type(ID).get();
 	if (folderIdErr) return rej('invalid folderId param');
 
 	if (folderId !== undefined) {
diff --git a/src/server/api/endpoints/drive/files/upload_from_url.ts b/src/server/api/endpoints/drive/files/upload_from_url.ts
index cfae1ae192..540c317bee 100644
--- a/src/server/api/endpoints/drive/files/upload_from_url.ts
+++ b/src/server/api/endpoints/drive/files/upload_from_url.ts
@@ -11,11 +11,11 @@ import uploadFromUrl from '../../../../../services/drive/upload-from-url';
 module.exports = async (params, user): Promise<any> => {
 	// Get 'url' parameter
 	// TODO: Validate this url
-	const [url, urlErr] = $(params.url).string().$;
+	const [url, urlErr] = $(params.url).string().get();
 	if (urlErr) throw 'invalid url param';
 
 	// Get 'folderId' parameter
-	const [folderId = null, folderIdErr] = $(params.folderId).optional.nullable.type(ID).$;
+	const [folderId = null, folderIdErr] = $(params.folderId).optional.nullable.type(ID).get();
 	if (folderIdErr) throw 'invalid folderId param';
 
 	return pack(await uploadFromUrl(url, user, folderId));
diff --git a/src/server/api/endpoints/drive/folders.ts b/src/server/api/endpoints/drive/folders.ts
index cba33c4286..8193a8317a 100644
--- a/src/server/api/endpoints/drive/folders.ts
+++ b/src/server/api/endpoints/drive/folders.ts
@@ -9,15 +9,15 @@ import DriveFolder, { pack } from '../../../../models/drive-folder';
  */
 module.exports = (params, user, app) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
@@ -26,7 +26,7 @@ module.exports = (params, user, app) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'folderId' parameter
-	const [folderId = null, folderIdErr] = $(params.folderId).optional.nullable.type(ID).$;
+	const [folderId = null, folderIdErr] = $(params.folderId).optional.nullable.type(ID).get();
 	if (folderIdErr) return rej('invalid folderId param');
 
 	// Construct query
diff --git a/src/server/api/endpoints/drive/folders/create.ts b/src/server/api/endpoints/drive/folders/create.ts
index 65425537a2..487c1b2205 100644
--- a/src/server/api/endpoints/drive/folders/create.ts
+++ b/src/server/api/endpoints/drive/folders/create.ts
@@ -10,11 +10,11 @@ import { publishDriveStream } from '../../../../../publishers/stream';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'name' parameter
-	const [name = '無題のフォルダー', nameErr] = $(params.name).optional.string().pipe(isValidFolderName).$;
+	const [name = '無題のフォルダー', nameErr] = $(params.name).optional.string().pipe(isValidFolderName).get();
 	if (nameErr) return rej('invalid name param');
 
 	// Get 'parentId' parameter
-	const [parentId = null, parentIdErr] = $(params.parentId).optional.nullable.type(ID).$;
+	const [parentId = null, parentIdErr] = $(params.parentId).optional.nullable.type(ID).get();
 	if (parentIdErr) return rej('invalid parentId param');
 
 	// If the parent folder is specified
diff --git a/src/server/api/endpoints/drive/folders/find.ts b/src/server/api/endpoints/drive/folders/find.ts
index d6277f1978..b8579219f9 100644
--- a/src/server/api/endpoints/drive/folders/find.ts
+++ b/src/server/api/endpoints/drive/folders/find.ts
@@ -9,11 +9,11 @@ import DriveFolder, { pack } from '../../../../../models/drive-folder';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'name' parameter
-	const [name, nameErr] = $(params.name).string().$;
+	const [name, nameErr] = $(params.name).string().get();
 	if (nameErr) return rej('invalid name param');
 
 	// Get 'parentId' parameter
-	const [parentId = null, parentIdErr] = $(params.parentId).optional.nullable.type(ID).$;
+	const [parentId = null, parentIdErr] = $(params.parentId).optional.nullable.type(ID).get();
 	if (parentIdErr) return rej('invalid parentId param');
 
 	// Issue query
diff --git a/src/server/api/endpoints/drive/folders/show.ts b/src/server/api/endpoints/drive/folders/show.ts
index c703209fef..36d7f1c69f 100644
--- a/src/server/api/endpoints/drive/folders/show.ts
+++ b/src/server/api/endpoints/drive/folders/show.ts
@@ -9,7 +9,7 @@ import DriveFolder, { pack } from '../../../../../models/drive-folder';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'folderId' parameter
-	const [folderId, folderIdErr] = $(params.folderId).type(ID).$;
+	const [folderId, folderIdErr] = $(params.folderId).type(ID).get();
 	if (folderIdErr) return rej('invalid folderId param');
 
 	// Get folder
diff --git a/src/server/api/endpoints/drive/folders/update.ts b/src/server/api/endpoints/drive/folders/update.ts
index d8da67fac8..64a6cd293a 100644
--- a/src/server/api/endpoints/drive/folders/update.ts
+++ b/src/server/api/endpoints/drive/folders/update.ts
@@ -10,7 +10,7 @@ import { publishDriveStream } from '../../../../../publishers/stream';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'folderId' parameter
-	const [folderId, folderIdErr] = $(params.folderId).type(ID).$;
+	const [folderId, folderIdErr] = $(params.folderId).type(ID).get();
 	if (folderIdErr) return rej('invalid folderId param');
 
 	// Fetch folder
@@ -25,12 +25,12 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'name' parameter
-	const [name, nameErr] = $(params.name).optional.string().pipe(isValidFolderName).$;
+	const [name, nameErr] = $(params.name).optional.string().pipe(isValidFolderName).get();
 	if (nameErr) return rej('invalid name param');
 	if (name) folder.name = name;
 
 	// Get 'parentId' parameter
-	const [parentId, parentIdErr] = $(params.parentId).optional.nullable.type(ID).$;
+	const [parentId, parentIdErr] = $(params.parentId).optional.nullable.type(ID).get();
 	if (parentIdErr) return rej('invalid parentId param');
 	if (parentId !== undefined) {
 		if (parentId === null) {
diff --git a/src/server/api/endpoints/drive/stream.ts b/src/server/api/endpoints/drive/stream.ts
index 00d89582b6..b148f2ce51 100644
--- a/src/server/api/endpoints/drive/stream.ts
+++ b/src/server/api/endpoints/drive/stream.ts
@@ -9,15 +9,15 @@ import DriveFile, { pack } from '../../../../models/drive-file';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
@@ -26,7 +26,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'type' parameter
-	const [type, typeErr] = $(params.type).optional.string().match(/^[a-zA-Z\/\-\*]+$/).$;
+	const [type, typeErr] = $(params.type).optional.string().match(/^[a-zA-Z\/\-\*]+$/).get();
 	if (typeErr) return rej('invalid type param');
 
 	// Construct query
diff --git a/src/server/api/endpoints/following/create.ts b/src/server/api/endpoints/following/create.ts
index 43f902852e..42a7b79b00 100644
--- a/src/server/api/endpoints/following/create.ts
+++ b/src/server/api/endpoints/following/create.ts
@@ -13,7 +13,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	const follower = user;
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).$;
+	const [userId, userIdErr] = $(params.userId).type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// 自分自身
diff --git a/src/server/api/endpoints/following/delete.ts b/src/server/api/endpoints/following/delete.ts
index 99722ccf91..3aef6523de 100644
--- a/src/server/api/endpoints/following/delete.ts
+++ b/src/server/api/endpoints/following/delete.ts
@@ -13,7 +13,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	const follower = user;
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).$;
+	const [userId, userIdErr] = $(params.userId).type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// Check if the followee is yourself
diff --git a/src/server/api/endpoints/following/stalk.ts b/src/server/api/endpoints/following/stalk.ts
index 1dfbc4df98..34e3f80f8a 100644
--- a/src/server/api/endpoints/following/stalk.ts
+++ b/src/server/api/endpoints/following/stalk.ts
@@ -8,7 +8,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	const follower = user;
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).$;
+	const [userId, userIdErr] = $(params.userId).type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// Fetch following
diff --git a/src/server/api/endpoints/following/unstalk.ts b/src/server/api/endpoints/following/unstalk.ts
index 0d91ffeac8..f8ca39ef7d 100644
--- a/src/server/api/endpoints/following/unstalk.ts
+++ b/src/server/api/endpoints/following/unstalk.ts
@@ -8,7 +8,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	const follower = user;
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).$;
+	const [userId, userIdErr] = $(params.userId).type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// Fetch following
diff --git a/src/server/api/endpoints/i/2fa/done.ts b/src/server/api/endpoints/i/2fa/done.ts
index 3e824feffd..310e5c574e 100644
--- a/src/server/api/endpoints/i/2fa/done.ts
+++ b/src/server/api/endpoints/i/2fa/done.ts
@@ -7,7 +7,7 @@ import User from '../../../../../models/user';
 
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'token' parameter
-	const [token, tokenErr] = $(params.token).string().$;
+	const [token, tokenErr] = $(params.token).string().get();
 	if (tokenErr) return rej('invalid token param');
 
 	const _token = token.replace(/\s/g, '');
diff --git a/src/server/api/endpoints/i/2fa/register.ts b/src/server/api/endpoints/i/2fa/register.ts
index bed64a2545..51f66dc2fe 100644
--- a/src/server/api/endpoints/i/2fa/register.ts
+++ b/src/server/api/endpoints/i/2fa/register.ts
@@ -10,7 +10,7 @@ import config from '../../../../../config';
 
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'password' parameter
-	const [password, passwordErr] = $(params.password).string().$;
+	const [password, passwordErr] = $(params.password).string().get();
 	if (passwordErr) return rej('invalid password param');
 
 	// Compare password
diff --git a/src/server/api/endpoints/i/2fa/unregister.ts b/src/server/api/endpoints/i/2fa/unregister.ts
index f9d7a25f53..9fd940dcaf 100644
--- a/src/server/api/endpoints/i/2fa/unregister.ts
+++ b/src/server/api/endpoints/i/2fa/unregister.ts
@@ -7,7 +7,7 @@ import User from '../../../../../models/user';
 
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'password' parameter
-	const [password, passwordErr] = $(params.password).string().$;
+	const [password, passwordErr] = $(params.password).string().get();
 	if (passwordErr) return rej('invalid password param');
 
 	// Compare password
diff --git a/src/server/api/endpoints/i/authorized_apps.ts b/src/server/api/endpoints/i/authorized_apps.ts
index fd12b3dec0..9635091465 100644
--- a/src/server/api/endpoints/i/authorized_apps.ts
+++ b/src/server/api/endpoints/i/authorized_apps.ts
@@ -10,15 +10,15 @@ import { pack } from '../../../../models/app';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).$;
+	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get 'sort' parameter
-	const [sort = 'desc', sortError] = $(params.sort).optional.string().or('desc asc').$;
+	const [sort = 'desc', sortError] = $(params.sort).optional.string().or('desc asc').get();
 	if (sortError) return rej('invalid sort param');
 
 	// Get tokens
diff --git a/src/server/api/endpoints/i/change_password.ts b/src/server/api/endpoints/i/change_password.ts
index a24e9f0be1..5c8c71d140 100644
--- a/src/server/api/endpoints/i/change_password.ts
+++ b/src/server/api/endpoints/i/change_password.ts
@@ -10,11 +10,11 @@ import User from '../../../../models/user';
  */
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'currentPasword' parameter
-	const [currentPassword, currentPasswordErr] = $(params.currentPasword).string().$;
+	const [currentPassword, currentPasswordErr] = $(params.currentPasword).string().get();
 	if (currentPasswordErr) return rej('invalid currentPasword param');
 
 	// Get 'newPassword' parameter
-	const [newPassword, newPasswordErr] = $(params.newPassword).string().$;
+	const [newPassword, newPasswordErr] = $(params.newPassword).string().get();
 	if (newPasswordErr) return rej('invalid newPassword param');
 
 	// Compare password
diff --git a/src/server/api/endpoints/i/favorites.ts b/src/server/api/endpoints/i/favorites.ts
index a2c472ad17..a65f673a7d 100644
--- a/src/server/api/endpoints/i/favorites.ts
+++ b/src/server/api/endpoints/i/favorites.ts
@@ -9,15 +9,15 @@ import Favorite, { pack } from '../../../../models/favorite';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/i/notifications.ts b/src/server/api/endpoints/i/notifications.ts
index 14ade7b023..a0bf2338a6 100644
--- a/src/server/api/endpoints/i/notifications.ts
+++ b/src/server/api/endpoints/i/notifications.ts
@@ -14,27 +14,27 @@ import read from '../../common/read-notification';
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'following' parameter
 	const [following = false, followingError] =
-		$(params.following).optional.boolean().$;
+		$(params.following).optional.boolean().get();
 	if (followingError) return rej('invalid following param');
 
 	// Get 'markAsRead' parameter
-	const [markAsRead = true, markAsReadErr] = $(params.markAsRead).optional.boolean().$;
+	const [markAsRead = true, markAsReadErr] = $(params.markAsRead).optional.boolean().get();
 	if (markAsReadErr) return rej('invalid markAsRead param');
 
 	// Get 'type' parameter
-	const [type, typeErr] = $(params.type).optional.array($().string()).unique().$;
+	const [type, typeErr] = $(params.type).optional.array($().string()).unique().get();
 	if (typeErr) return rej('invalid type param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/i/pin.ts b/src/server/api/endpoints/i/pin.ts
index 761e41bbea..1d995746dc 100644
--- a/src/server/api/endpoints/i/pin.ts
+++ b/src/server/api/endpoints/i/pin.ts
@@ -11,7 +11,7 @@ import { pack } from '../../../../models/user';
  */
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).$;
+	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Fetch pinee
diff --git a/src/server/api/endpoints/i/regenerate_token.ts b/src/server/api/endpoints/i/regenerate_token.ts
index 945ddbdee4..df440c68ab 100644
--- a/src/server/api/endpoints/i/regenerate_token.ts
+++ b/src/server/api/endpoints/i/regenerate_token.ts
@@ -12,7 +12,7 @@ import generateUserToken from '../../common/generate-native-user-token';
  */
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'password' parameter
-	const [password, passwordErr] = $(params.password).string().$;
+	const [password, passwordErr] = $(params.password).string().get();
 	if (passwordErr) return rej('invalid password param');
 
 	// Compare password
diff --git a/src/server/api/endpoints/i/signin_history.ts b/src/server/api/endpoints/i/signin_history.ts
index 77beca9fd6..d505caad82 100644
--- a/src/server/api/endpoints/i/signin_history.ts
+++ b/src/server/api/endpoints/i/signin_history.ts
@@ -9,15 +9,15 @@ import Signin, { pack } from '../../../../models/signin';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/i/update.ts b/src/server/api/endpoints/i/update.ts
index 7505e73387..2b76497025 100644
--- a/src/server/api/endpoints/i/update.ts
+++ b/src/server/api/endpoints/i/update.ts
@@ -12,42 +12,42 @@ module.exports = async (params, user, app) => new Promise(async (res, rej) => {
 	const isSecure = user != null && app == null;
 
 	// Get 'name' parameter
-	const [name, nameErr] = $(params.name).optional.nullable.string().pipe(isValidName).$;
+	const [name, nameErr] = $(params.name).optional.nullable.string().pipe(isValidName).get();
 	if (nameErr) return rej('invalid name param');
 	if (name) user.name = name;
 
 	// Get 'description' parameter
-	const [description, descriptionErr] = $(params.description).optional.nullable.string().pipe(isValidDescription).$;
+	const [description, descriptionErr] = $(params.description).optional.nullable.string().pipe(isValidDescription).get();
 	if (descriptionErr) return rej('invalid description param');
 	if (description !== undefined) user.description = description;
 
 	// Get 'location' parameter
-	const [location, locationErr] = $(params.location).optional.nullable.string().pipe(isValidLocation).$;
+	const [location, locationErr] = $(params.location).optional.nullable.string().pipe(isValidLocation).get();
 	if (locationErr) return rej('invalid location param');
 	if (location !== undefined) user.profile.location = location;
 
 	// Get 'birthday' parameter
-	const [birthday, birthdayErr] = $(params.birthday).optional.nullable.string().pipe(isValidBirthday).$;
+	const [birthday, birthdayErr] = $(params.birthday).optional.nullable.string().pipe(isValidBirthday).get();
 	if (birthdayErr) return rej('invalid birthday param');
 	if (birthday !== undefined) user.profile.birthday = birthday;
 
 	// Get 'avatarId' parameter
-	const [avatarId, avatarIdErr] = $(params.avatarId).optional.type(ID).$;
+	const [avatarId, avatarIdErr] = $(params.avatarId).optional.type(ID).get();
 	if (avatarIdErr) return rej('invalid avatarId param');
 	if (avatarId) user.avatarId = avatarId;
 
 	// Get 'bannerId' parameter
-	const [bannerId, bannerIdErr] = $(params.bannerId).optional.type(ID).$;
+	const [bannerId, bannerIdErr] = $(params.bannerId).optional.type(ID).get();
 	if (bannerIdErr) return rej('invalid bannerId param');
 	if (bannerId) user.bannerId = bannerId;
 
 	// Get 'isBot' parameter
-	const [isBot, isBotErr] = $(params.isBot).optional.boolean().$;
+	const [isBot, isBotErr] = $(params.isBot).optional.boolean().get();
 	if (isBotErr) return rej('invalid isBot param');
 	if (isBot != null) user.isBot = isBot;
 
 	// Get 'autoWatch' parameter
-	const [autoWatch, autoWatchErr] = $(params.autoWatch).optional.boolean().$;
+	const [autoWatch, autoWatchErr] = $(params.autoWatch).optional.boolean().get();
 	if (autoWatchErr) return rej('invalid autoWatch param');
 	if (autoWatch != null) user.settings.autoWatch = autoWatch;
 
diff --git a/src/server/api/endpoints/i/update_client_setting.ts b/src/server/api/endpoints/i/update_client_setting.ts
index f753c8bcc4..2edc2104d2 100644
--- a/src/server/api/endpoints/i/update_client_setting.ts
+++ b/src/server/api/endpoints/i/update_client_setting.ts
@@ -10,11 +10,11 @@ import event from '../../../../publishers/stream';
  */
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'name' parameter
-	const [name, nameErr] = $(params.name).string().$;
+	const [name, nameErr] = $(params.name).string().get();
 	if (nameErr) return rej('invalid name param');
 
 	// Get 'value' parameter
-	const [value, valueErr] = $(params.value).nullable.any().$;
+	const [value, valueErr] = $(params.value).nullable.any().get();
 	if (valueErr) return rej('invalid value param');
 
 	const x = {};
diff --git a/src/server/api/endpoints/i/update_home.ts b/src/server/api/endpoints/i/update_home.ts
index 4b8ba25069..baf9b739ae 100644
--- a/src/server/api/endpoints/i/update_home.ts
+++ b/src/server/api/endpoints/i/update_home.ts
@@ -12,15 +12,15 @@ module.exports = async (params, user) => new Promise(async (res, rej) => {
 			.have('name', $().string())
 			.have('id', $().string())
 			.have('place', $().string())
-			.have('data', $().object())).$;
+			.have('data', $().object())).get();
 	if (homeErr) return rej('invalid home param');
 
 	// Get 'id' parameter
-	const [id, idErr] = $(params.id).optional.string().$;
+	const [id, idErr] = $(params.id).optional.string().get();
 	if (idErr) return rej('invalid id param');
 
 	// Get 'data' parameter
-	const [data, dataErr] = $(params.data).optional.object().$;
+	const [data, dataErr] = $(params.data).optional.object().get();
 	if (dataErr) return rej('invalid data param');
 
 	if (home) {
diff --git a/src/server/api/endpoints/i/update_mobile_home.ts b/src/server/api/endpoints/i/update_mobile_home.ts
index c3ecea7178..21d94839b7 100644
--- a/src/server/api/endpoints/i/update_mobile_home.ts
+++ b/src/server/api/endpoints/i/update_mobile_home.ts
@@ -11,15 +11,15 @@ module.exports = async (params, user) => new Promise(async (res, rej) => {
 		$().object(true)
 			.have('name', $().string())
 			.have('id', $().string())
-			.have('data', $().object())).$;
+			.have('data', $().object())).get();
 	if (homeErr) return rej('invalid home param');
 
 	// Get 'id' parameter
-	const [id, idErr] = $(params.id).optional.string().$;
+	const [id, idErr] = $(params.id).optional.string().get();
 	if (idErr) return rej('invalid id param');
 
 	// Get 'data' parameter
-	const [data, dataErr] = $(params.data).optional.object().$;
+	const [data, dataErr] = $(params.data).optional.object().get();
 	if (dataErr) return rej('invalid data param');
 
 	if (home) {
diff --git a/src/server/api/endpoints/messaging/history.ts b/src/server/api/endpoints/messaging/history.ts
index 654bf5c198..9fd1f80d7b 100644
--- a/src/server/api/endpoints/messaging/history.ts
+++ b/src/server/api/endpoints/messaging/history.ts
@@ -11,7 +11,7 @@ import { pack } from '../../../../models/messaging-message';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	const mute = await Mute.find({
diff --git a/src/server/api/endpoints/messaging/messages.ts b/src/server/api/endpoints/messaging/messages.ts
index f28699cb88..f154133a12 100644
--- a/src/server/api/endpoints/messaging/messages.ts
+++ b/src/server/api/endpoints/messaging/messages.ts
@@ -16,7 +16,7 @@ import read from '../../common/read-messaging-message';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [recipientId, recipientIdErr] = $(params.userId).type(ID).$;
+	const [recipientId, recipientIdErr] = $(params.userId).type(ID).get();
 	if (recipientIdErr) return rej('invalid userId param');
 
 	// Fetch recipient
@@ -33,19 +33,19 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'markAsRead' parameter
-	const [markAsRead = true, markAsReadErr] = $(params.markAsRead).optional.boolean().$;
+	const [markAsRead = true, markAsReadErr] = $(params.markAsRead).optional.boolean().get();
 	if (markAsReadErr) return rej('invalid markAsRead param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/messaging/messages/create.ts b/src/server/api/endpoints/messaging/messages/create.ts
index cce326be6e..8b708eeaa9 100644
--- a/src/server/api/endpoints/messaging/messages/create.ts
+++ b/src/server/api/endpoints/messaging/messages/create.ts
@@ -19,7 +19,7 @@ import config from '../../../../../config';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [recipientId, recipientIdErr] = $(params.userId).type(ID).$;
+	const [recipientId, recipientIdErr] = $(params.userId).type(ID).get();
 	if (recipientIdErr) return rej('invalid userId param');
 
 	// Myself
@@ -41,11 +41,11 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'text' parameter
-	const [text, textErr] = $(params.text).optional.string().pipe(isValidText).$;
+	const [text, textErr] = $(params.text).optional.string().pipe(isValidText).get();
 	if (textErr) return rej('invalid text');
 
 	// Get 'fileId' parameter
-	const [fileId, fileIdErr] = $(params.fileId).optional.type(ID).$;
+	const [fileId, fileIdErr] = $(params.fileId).optional.type(ID).get();
 	if (fileIdErr) return rej('invalid fileId param');
 
 	let file = null;
diff --git a/src/server/api/endpoints/mute/create.ts b/src/server/api/endpoints/mute/create.ts
index 0d59ecc118..aa9f6eb731 100644
--- a/src/server/api/endpoints/mute/create.ts
+++ b/src/server/api/endpoints/mute/create.ts
@@ -12,7 +12,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	const muter = user;
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).$;
+	const [userId, userIdErr] = $(params.userId).type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// 自分自身
diff --git a/src/server/api/endpoints/mute/delete.ts b/src/server/api/endpoints/mute/delete.ts
index 3a37de9a21..f24db6770d 100644
--- a/src/server/api/endpoints/mute/delete.ts
+++ b/src/server/api/endpoints/mute/delete.ts
@@ -12,7 +12,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	const muter = user;
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).$;
+	const [userId, userIdErr] = $(params.userId).type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// Check if the mutee is yourself
diff --git a/src/server/api/endpoints/mute/list.ts b/src/server/api/endpoints/mute/list.ts
index f35bf7d168..f7199db64e 100644
--- a/src/server/api/endpoints/mute/list.ts
+++ b/src/server/api/endpoints/mute/list.ts
@@ -11,15 +11,15 @@ import { getFriendIds } from '../../common/get-friends';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'iknow' parameter
-	const [iknow = false, iknowErr] = $(params.iknow).optional.boolean().$;
+	const [iknow = false, iknowErr] = $(params.iknow).optional.boolean().get();
 	if (iknowErr) return rej('invalid iknow param');
 
 	// Get 'limit' parameter
-	const [limit = 30, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 30, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'cursor' parameter
-	const [cursor = null, cursorErr] = $(params.cursor).optional.type(ID).$;
+	const [cursor = null, cursorErr] = $(params.cursor).optional.type(ID).get();
 	if (cursorErr) return rej('invalid cursor param');
 
 	// Construct query
diff --git a/src/server/api/endpoints/my/apps.ts b/src/server/api/endpoints/my/apps.ts
index eb7ece70e9..3b58b30241 100644
--- a/src/server/api/endpoints/my/apps.ts
+++ b/src/server/api/endpoints/my/apps.ts
@@ -9,11 +9,11 @@ import App, { pack } from '../../../../models/app';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).$;
+	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
 	if (offsetErr) return rej('invalid offset param');
 
 	const query = {
diff --git a/src/server/api/endpoints/notes.ts b/src/server/api/endpoints/notes.ts
index bf4d5bc66f..7be35961d2 100644
--- a/src/server/api/endpoints/notes.ts
+++ b/src/server/api/endpoints/notes.ts
@@ -9,35 +9,35 @@ import Note, { pack } from '../../../models/note';
  */
 module.exports = (params) => new Promise(async (res, rej) => {
 	// Get 'reply' parameter
-	const [reply, replyErr] = $(params.reply).optional.boolean().$;
+	const [reply, replyErr] = $(params.reply).optional.boolean().get();
 	if (replyErr) return rej('invalid reply param');
 
 	// Get 'renote' parameter
-	const [renote, renoteErr] = $(params.renote).optional.boolean().$;
+	const [renote, renoteErr] = $(params.renote).optional.boolean().get();
 	if (renoteErr) return rej('invalid renote param');
 
 	// Get 'media' parameter
-	const [media, mediaErr] = $(params.media).optional.boolean().$;
+	const [media, mediaErr] = $(params.media).optional.boolean().get();
 	if (mediaErr) return rej('invalid media param');
 
 	// Get 'poll' parameter
-	const [poll, pollErr] = $(params.poll).optional.boolean().$;
+	const [poll, pollErr] = $(params.poll).optional.boolean().get();
 	if (pollErr) return rej('invalid poll param');
 
 	// Get 'bot' parameter
-	//const [bot, botErr] = $(params.bot).optional.boolean().$;
+	//const [bot, botErr] = $(params.bot).optional.boolean().get();
 	//if (botErr) return rej('invalid bot param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/notes/context.ts b/src/server/api/endpoints/notes/context.ts
index 309fc26447..7e3533cfd8 100644
--- a/src/server/api/endpoints/notes/context.ts
+++ b/src/server/api/endpoints/notes/context.ts
@@ -13,15 +13,15 @@ import Note, { pack } from '../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).$;
+	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).$;
+	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
 	if (offsetErr) return rej('invalid offset param');
 
 	// Lookup note
diff --git a/src/server/api/endpoints/notes/create.ts b/src/server/api/endpoints/notes/create.ts
index 1824a16c24..af4f365226 100644
--- a/src/server/api/endpoints/notes/create.ts
+++ b/src/server/api/endpoints/notes/create.ts
@@ -14,23 +14,23 @@ import { IApp } from '../../../../models/app';
  */
 module.exports = (params, user: ILocalUser, app: IApp) => new Promise(async (res, rej) => {
 	// Get 'visibility' parameter
-	const [visibility = 'public', visibilityErr] = $(params.visibility).optional.string().or(['public', 'unlisted', 'private', 'direct']).$;
+	const [visibility = 'public', visibilityErr] = $(params.visibility).optional.string().or(['public', 'unlisted', 'private', 'direct']).get();
 	if (visibilityErr) return rej('invalid visibility');
 
 	// Get 'text' parameter
-	const [text = null, textErr] = $(params.text).optional.nullable.string().pipe(isValidText).$;
+	const [text = null, textErr] = $(params.text).optional.nullable.string().pipe(isValidText).get();
 	if (textErr) return rej('invalid text');
 
 	// Get 'cw' parameter
-	const [cw, cwErr] = $(params.cw).optional.nullable.string().pipe(isValidCw).$;
+	const [cw, cwErr] = $(params.cw).optional.nullable.string().pipe(isValidCw).get();
 	if (cwErr) return rej('invalid cw');
 
 	// Get 'viaMobile' parameter
-	const [viaMobile = false, viaMobileErr] = $(params.viaMobile).optional.boolean().$;
+	const [viaMobile = false, viaMobileErr] = $(params.viaMobile).optional.boolean().get();
 	if (viaMobileErr) return rej('invalid viaMobile');
 
 	// Get 'tags' parameter
-	const [tags = [], tagsErr] = $(params.tags).optional.array($().string().range(1, 32)).unique().$;
+	const [tags = [], tagsErr] = $(params.tags).optional.array($().string().range(1, 32)).unique().get();
 	if (tagsErr) return rej('invalid tags');
 
 	// Get 'geo' parameter
@@ -43,11 +43,11 @@ module.exports = (params, user: ILocalUser, app: IApp) => new Promise(async (res
 		.have('altitudeAccuracy', $().nullable.number())
 		.have('heading', $().nullable.number().range(0, 360))
 		.have('speed', $().nullable.number())
-		.$;
+		.get();
 	if (geoErr) return rej('invalid geo');
 
 	// Get 'mediaIds' parameter
-	const [mediaIds, mediaIdsErr] = $(params.mediaIds).optional.array($().type(ID)).unique().range(1, 4).$;
+	const [mediaIds, mediaIdsErr] = $(params.mediaIds).optional.array($().type(ID)).unique().range(1, 4).get();
 	if (mediaIdsErr) return rej('invalid mediaIds');
 
 	let files = [];
@@ -74,7 +74,7 @@ module.exports = (params, user: ILocalUser, app: IApp) => new Promise(async (res
 	}
 
 	// Get 'renoteId' parameter
-	const [renoteId, renoteIdErr] = $(params.renoteId).optional.type(ID).$;
+	const [renoteId, renoteIdErr] = $(params.renoteId).optional.type(ID).get();
 	if (renoteIdErr) return rej('invalid renoteId');
 
 	let renote: INote = null;
@@ -95,7 +95,7 @@ module.exports = (params, user: ILocalUser, app: IApp) => new Promise(async (res
 	}
 
 	// Get 'replyId' parameter
-	const [replyId, replyIdErr] = $(params.replyId).optional.type(ID).$;
+	const [replyId, replyIdErr] = $(params.replyId).optional.type(ID).get();
 	if (replyIdErr) return rej('invalid replyId');
 
 	let reply: INote = null;
@@ -116,7 +116,7 @@ module.exports = (params, user: ILocalUser, app: IApp) => new Promise(async (res
 	}
 
 	// Get 'channelId' parameter
-	const [channelId, channelIdErr] = $(params.channelId).optional.type(ID).$;
+	const [channelId, channelIdErr] = $(params.channelId).optional.type(ID).get();
 	if (channelIdErr) return rej('invalid channelId');
 
 	let channel: IChannel = null;
@@ -162,7 +162,7 @@ module.exports = (params, user: ILocalUser, app: IApp) => new Promise(async (res
 			.unique()
 			.range(2, 10)
 			.each(c => c.length > 0 && c.length < 50))
-		.$;
+		.get();
 	if (pollErr) return rej('invalid poll');
 
 	if (poll) {
diff --git a/src/server/api/endpoints/notes/favorites/create.ts b/src/server/api/endpoints/notes/favorites/create.ts
index e4c4adb9bb..e6396b85ce 100644
--- a/src/server/api/endpoints/notes/favorites/create.ts
+++ b/src/server/api/endpoints/notes/favorites/create.ts
@@ -10,7 +10,7 @@ import Note from '../../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).$;
+	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get favoritee
diff --git a/src/server/api/endpoints/notes/favorites/delete.ts b/src/server/api/endpoints/notes/favorites/delete.ts
index 3c4d9a1111..f1de424725 100644
--- a/src/server/api/endpoints/notes/favorites/delete.ts
+++ b/src/server/api/endpoints/notes/favorites/delete.ts
@@ -10,7 +10,7 @@ import Note from '../../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).$;
+	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get favoritee
diff --git a/src/server/api/endpoints/notes/global-timeline.ts b/src/server/api/endpoints/notes/global-timeline.ts
index e2a94d8a3e..212345aac0 100644
--- a/src/server/api/endpoints/notes/global-timeline.ts
+++ b/src/server/api/endpoints/notes/global-timeline.ts
@@ -11,23 +11,23 @@ import { pack } from '../../../../models/note';
  */
 module.exports = async (params, user, app) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) throw 'invalid limit param';
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) throw 'invalid sinceId param';
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) throw 'invalid untilId param';
 
 	// Get 'sinceDate' parameter
-	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().$;
+	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().get();
 	if (sinceDateErr) throw 'invalid sinceDate param';
 
 	// Get 'untilDate' parameter
-	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().$;
+	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().get();
 	if (untilDateErr) throw 'invalid untilDate param';
 
 	// Check if only one of sinceId, untilId, sinceDate, untilDate specified
diff --git a/src/server/api/endpoints/notes/local-timeline.ts b/src/server/api/endpoints/notes/local-timeline.ts
index dda83311ac..12dd2d5a85 100644
--- a/src/server/api/endpoints/notes/local-timeline.ts
+++ b/src/server/api/endpoints/notes/local-timeline.ts
@@ -11,23 +11,23 @@ import { pack } from '../../../../models/note';
  */
 module.exports = async (params, user, app) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) throw 'invalid limit param';
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) throw 'invalid sinceId param';
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) throw 'invalid untilId param';
 
 	// Get 'sinceDate' parameter
-	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().$;
+	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().get();
 	if (sinceDateErr) throw 'invalid sinceDate param';
 
 	// Get 'untilDate' parameter
-	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().$;
+	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().get();
 	if (untilDateErr) throw 'invalid untilDate param';
 
 	// Check if only one of sinceId, untilId, sinceDate, untilDate specified
diff --git a/src/server/api/endpoints/notes/mentions.ts b/src/server/api/endpoints/notes/mentions.ts
index 815cf271a2..db7c630897 100644
--- a/src/server/api/endpoints/notes/mentions.ts
+++ b/src/server/api/endpoints/notes/mentions.ts
@@ -16,19 +16,19 @@ import { pack } from '../../../../models/note';
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'following' parameter
 	const [following = false, followingError] =
-		$(params.following).optional.boolean().$;
+		$(params.following).optional.boolean().get();
 	if (followingError) return rej('invalid following param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/notes/polls/recommendation.ts b/src/server/api/endpoints/notes/polls/recommendation.ts
index 24b0a4c803..1994c5ce7a 100644
--- a/src/server/api/endpoints/notes/polls/recommendation.ts
+++ b/src/server/api/endpoints/notes/polls/recommendation.ts
@@ -10,11 +10,11 @@ import Note, { pack } from '../../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).$;
+	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get votes
diff --git a/src/server/api/endpoints/notes/polls/vote.ts b/src/server/api/endpoints/notes/polls/vote.ts
index 2669c39085..1915e0c79b 100644
--- a/src/server/api/endpoints/notes/polls/vote.ts
+++ b/src/server/api/endpoints/notes/polls/vote.ts
@@ -14,7 +14,7 @@ import notify from '../../../../../publishers/notify';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).$;
+	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get votee
@@ -34,7 +34,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	const [choice, choiceError] =
 		$(params.choice).number()
 			.pipe(c => note.poll.choices.some(x => x.id == c))
-			.$;
+			.get();
 	if (choiceError) return rej('invalid choice param');
 
 	// if already voted
diff --git a/src/server/api/endpoints/notes/reactions.ts b/src/server/api/endpoints/notes/reactions.ts
index 68ffbacd46..75ed580de2 100644
--- a/src/server/api/endpoints/notes/reactions.ts
+++ b/src/server/api/endpoints/notes/reactions.ts
@@ -14,19 +14,19 @@ import Reaction, { pack } from '../../../../models/note-reaction';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).$;
+	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).$;
+	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get 'sort' parameter
-	const [sort = 'desc', sortError] = $(params.sort).optional.string().or('desc asc').$;
+	const [sort = 'desc', sortError] = $(params.sort).optional.string().or('desc asc').get();
 	if (sortError) return rej('invalid sort param');
 
 	// Lookup note
diff --git a/src/server/api/endpoints/notes/reactions/create.ts b/src/server/api/endpoints/notes/reactions/create.ts
index 1c21252604..9dc1b3c82a 100644
--- a/src/server/api/endpoints/notes/reactions/create.ts
+++ b/src/server/api/endpoints/notes/reactions/create.ts
@@ -11,11 +11,11 @@ import { validateReaction } from '../../../../../models/note-reaction';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).$;
+	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get 'reaction' parameter
-	const [reaction, reactionErr] = $(params.reaction).string().pipe(validateReaction.ok).$;
+	const [reaction, reactionErr] = $(params.reaction).string().pipe(validateReaction.ok).get();
 	if (reactionErr) return rej('invalid reaction param');
 
 	// Fetch reactee
diff --git a/src/server/api/endpoints/notes/reactions/delete.ts b/src/server/api/endpoints/notes/reactions/delete.ts
index be3c1b214d..6bd5edef42 100644
--- a/src/server/api/endpoints/notes/reactions/delete.ts
+++ b/src/server/api/endpoints/notes/reactions/delete.ts
@@ -10,7 +10,7 @@ import Note from '../../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).$;
+	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Fetch unreactee
diff --git a/src/server/api/endpoints/notes/replies.ts b/src/server/api/endpoints/notes/replies.ts
index 31f1bb941a..47c9ae501f 100644
--- a/src/server/api/endpoints/notes/replies.ts
+++ b/src/server/api/endpoints/notes/replies.ts
@@ -13,19 +13,19 @@ import Note, { pack } from '../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).$;
+	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).$;
+	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get 'sort' parameter
-	const [sort = 'desc', sortError] = $(params.sort).optional.string().or('desc asc').$;
+	const [sort = 'desc', sortError] = $(params.sort).optional.string().or('desc asc').get();
 	if (sortError) return rej('invalid sort param');
 
 	// Lookup note
diff --git a/src/server/api/endpoints/notes/reposts.ts b/src/server/api/endpoints/notes/reposts.ts
index fe98931380..b388ee599f 100644
--- a/src/server/api/endpoints/notes/reposts.ts
+++ b/src/server/api/endpoints/notes/reposts.ts
@@ -13,19 +13,19 @@ import Note, { pack } from '../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).$;
+	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/notes/search.ts b/src/server/api/endpoints/notes/search.ts
index 021f620aa2..8b3c78145d 100644
--- a/src/server/api/endpoints/notes/search.ts
+++ b/src/server/api/endpoints/notes/search.ts
@@ -18,63 +18,63 @@ import { pack } from '../../../../models/note';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'text' parameter
-	const [text, textError] = $(params.text).optional.string().$;
+	const [text, textError] = $(params.text).optional.string().get();
 	if (textError) return rej('invalid text param');
 
 	// Get 'includeUserIds' parameter
-	const [includeUserIds = [], includeUserIdsErr] = $(params.includeUserIds).optional.array($().type(ID)).$;
+	const [includeUserIds = [], includeUserIdsErr] = $(params.includeUserIds).optional.array($().type(ID)).get();
 	if (includeUserIdsErr) return rej('invalid includeUserIds param');
 
 	// Get 'excludeUserIds' parameter
-	const [excludeUserIds = [], excludeUserIdsErr] = $(params.excludeUserIds).optional.array($().type(ID)).$;
+	const [excludeUserIds = [], excludeUserIdsErr] = $(params.excludeUserIds).optional.array($().type(ID)).get();
 	if (excludeUserIdsErr) return rej('invalid excludeUserIds param');
 
 	// Get 'includeUserUsernames' parameter
-	const [includeUserUsernames = [], includeUserUsernamesErr] = $(params.includeUserUsernames).optional.array($().string()).$;
+	const [includeUserUsernames = [], includeUserUsernamesErr] = $(params.includeUserUsernames).optional.array($().string()).get();
 	if (includeUserUsernamesErr) return rej('invalid includeUserUsernames param');
 
 	// Get 'excludeUserUsernames' parameter
-	const [excludeUserUsernames = [], excludeUserUsernamesErr] = $(params.excludeUserUsernames).optional.array($().string()).$;
+	const [excludeUserUsernames = [], excludeUserUsernamesErr] = $(params.excludeUserUsernames).optional.array($().string()).get();
 	if (excludeUserUsernamesErr) return rej('invalid excludeUserUsernames param');
 
 	// Get 'following' parameter
-	const [following = null, followingErr] = $(params.following).optional.nullable.boolean().$;
+	const [following = null, followingErr] = $(params.following).optional.nullable.boolean().get();
 	if (followingErr) return rej('invalid following param');
 
 	// Get 'mute' parameter
-	const [mute = 'mute_all', muteErr] = $(params.mute).optional.string().$;
+	const [mute = 'mute_all', muteErr] = $(params.mute).optional.string().get();
 	if (muteErr) return rej('invalid mute param');
 
 	// Get 'reply' parameter
-	const [reply = null, replyErr] = $(params.reply).optional.nullable.boolean().$;
+	const [reply = null, replyErr] = $(params.reply).optional.nullable.boolean().get();
 	if (replyErr) return rej('invalid reply param');
 
 	// Get 'renote' parameter
-	const [renote = null, renoteErr] = $(params.renote).optional.nullable.boolean().$;
+	const [renote = null, renoteErr] = $(params.renote).optional.nullable.boolean().get();
 	if (renoteErr) return rej('invalid renote param');
 
 	// Get 'media' parameter
-	const [media = null, mediaErr] = $(params.media).optional.nullable.boolean().$;
+	const [media = null, mediaErr] = $(params.media).optional.nullable.boolean().get();
 	if (mediaErr) return rej('invalid media param');
 
 	// Get 'poll' parameter
-	const [poll = null, pollErr] = $(params.poll).optional.nullable.boolean().$;
+	const [poll = null, pollErr] = $(params.poll).optional.nullable.boolean().get();
 	if (pollErr) return rej('invalid poll param');
 
 	// Get 'sinceDate' parameter
-	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().$;
+	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().get();
 	if (sinceDateErr) throw 'invalid sinceDate param';
 
 	// Get 'untilDate' parameter
-	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().$;
+	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().get();
 	if (untilDateErr) throw 'invalid untilDate param';
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).$;
+	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 30).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 30).get();
 	if (limitErr) return rej('invalid limit param');
 
 	let includeUsers = includeUserIds;
diff --git a/src/server/api/endpoints/notes/show.ts b/src/server/api/endpoints/notes/show.ts
index 266e0687e9..2a4f8f97e1 100644
--- a/src/server/api/endpoints/notes/show.ts
+++ b/src/server/api/endpoints/notes/show.ts
@@ -13,7 +13,7 @@ import Note, { pack } from '../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).$;
+	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get note
diff --git a/src/server/api/endpoints/notes/timeline.ts b/src/server/api/endpoints/notes/timeline.ts
index 476d64158c..222f0b795f 100644
--- a/src/server/api/endpoints/notes/timeline.ts
+++ b/src/server/api/endpoints/notes/timeline.ts
@@ -13,23 +13,23 @@ import { pack } from '../../../../models/note';
  */
 module.exports = async (params, user, app) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) throw 'invalid limit param';
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) throw 'invalid sinceId param';
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) throw 'invalid untilId param';
 
 	// Get 'sinceDate' parameter
-	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().$;
+	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().get();
 	if (sinceDateErr) throw 'invalid sinceDate param';
 
 	// Get 'untilDate' parameter
-	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().$;
+	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().get();
 	if (untilDateErr) throw 'invalid untilDate param';
 
 	// Check if only one of sinceId, untilId, sinceDate, untilDate specified
@@ -38,11 +38,11 @@ module.exports = async (params, user, app) => {
 	}
 
 	// Get 'includeMyRenotes' parameter
-	const [includeMyRenotes = true, includeMyRenotesErr] = $(params.includeMyRenotes).optional.boolean().$;
+	const [includeMyRenotes = true, includeMyRenotesErr] = $(params.includeMyRenotes).optional.boolean().get();
 	if (includeMyRenotesErr) throw 'invalid includeMyRenotes param';
 
 	// Get 'includeRenotedMyNotes' parameter
-	const [includeRenotedMyNotes = true, includeRenotedMyNotesErr] = $(params.includeRenotedMyNotes).optional.boolean().$;
+	const [includeRenotedMyNotes = true, includeRenotedMyNotesErr] = $(params.includeRenotedMyNotes).optional.boolean().get();
 	if (includeRenotedMyNotesErr) throw 'invalid includeRenotedMyNotes param';
 
 	const [followings, watchingChannelIds, mutedUserIds] = await Promise.all([
diff --git a/src/server/api/endpoints/notes/trend.ts b/src/server/api/endpoints/notes/trend.ts
index 48ecd5b843..915d45ce91 100644
--- a/src/server/api/endpoints/notes/trend.ts
+++ b/src/server/api/endpoints/notes/trend.ts
@@ -14,27 +14,27 @@ import Note, { pack } from '../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).$;
+	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get 'reply' parameter
-	const [reply, replyErr] = $(params.reply).optional.boolean().$;
+	const [reply, replyErr] = $(params.reply).optional.boolean().get();
 	if (replyErr) return rej('invalid reply param');
 
 	// Get 'renote' parameter
-	const [renote, renoteErr] = $(params.renote).optional.boolean().$;
+	const [renote, renoteErr] = $(params.renote).optional.boolean().get();
 	if (renoteErr) return rej('invalid renote param');
 
 	// Get 'media' parameter
-	const [media, mediaErr] = $(params.media).optional.boolean().$;
+	const [media, mediaErr] = $(params.media).optional.boolean().get();
 	if (mediaErr) return rej('invalid media param');
 
 	// Get 'poll' parameter
-	const [poll, pollErr] = $(params.poll).optional.boolean().$;
+	const [poll, pollErr] = $(params.poll).optional.boolean().get();
 	if (pollErr) return rej('invalid poll param');
 
 	const query = {
diff --git a/src/server/api/endpoints/notes/user-list-timeline.ts b/src/server/api/endpoints/notes/user-list-timeline.ts
index bb94fa0ab9..8d4eb590cb 100644
--- a/src/server/api/endpoints/notes/user-list-timeline.ts
+++ b/src/server/api/endpoints/notes/user-list-timeline.ts
@@ -12,23 +12,23 @@ import UserList from '../../../../models/user-list';
  */
 module.exports = async (params, user, app) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) throw 'invalid limit param';
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) throw 'invalid sinceId param';
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) throw 'invalid untilId param';
 
 	// Get 'sinceDate' parameter
-	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().$;
+	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().get();
 	if (sinceDateErr) throw 'invalid sinceDate param';
 
 	// Get 'untilDate' parameter
-	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().$;
+	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().get();
 	if (untilDateErr) throw 'invalid untilDate param';
 
 	// Check if only one of sinceId, untilId, sinceDate, untilDate specified
@@ -37,15 +37,15 @@ module.exports = async (params, user, app) => {
 	}
 
 	// Get 'includeMyRenotes' parameter
-	const [includeMyRenotes = true, includeMyRenotesErr] = $(params.includeMyRenotes).optional.boolean().$;
+	const [includeMyRenotes = true, includeMyRenotesErr] = $(params.includeMyRenotes).optional.boolean().get();
 	if (includeMyRenotesErr) throw 'invalid includeMyRenotes param';
 
 	// Get 'includeRenotedMyNotes' parameter
-	const [includeRenotedMyNotes = true, includeRenotedMyNotesErr] = $(params.includeRenotedMyNotes).optional.boolean().$;
+	const [includeRenotedMyNotes = true, includeRenotedMyNotesErr] = $(params.includeRenotedMyNotes).optional.boolean().get();
 	if (includeRenotedMyNotesErr) throw 'invalid includeRenotedMyNotes param';
 
 	// Get 'listId' parameter
-	const [listId, listIdErr] = $(params.listId).type(ID).$;
+	const [listId, listIdErr] = $(params.listId).type(ID).get();
 	if (listIdErr) throw 'invalid listId param';
 
 	const [list, mutedUserIds] = await Promise.all([
diff --git a/src/server/api/endpoints/othello/games.ts b/src/server/api/endpoints/othello/games.ts
index 3b23b60637..05bff180c1 100644
--- a/src/server/api/endpoints/othello/games.ts
+++ b/src/server/api/endpoints/othello/games.ts
@@ -3,19 +3,19 @@ import OthelloGame, { pack } from '../../../../models/othello-game';
 
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'my' parameter
-	const [my = false, myErr] = $(params.my).optional.boolean().$;
+	const [my = false, myErr] = $(params.my).optional.boolean().get();
 	if (myErr) return rej('invalid my param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/othello/games/show.ts b/src/server/api/endpoints/othello/games/show.ts
index d76c6556a2..991bb9622e 100644
--- a/src/server/api/endpoints/othello/games/show.ts
+++ b/src/server/api/endpoints/othello/games/show.ts
@@ -4,7 +4,7 @@ import Othello from '../../../../../othello/core';
 
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'gameId' parameter
-	const [gameId, gameIdErr] = $(params.gameId).type(ID).$;
+	const [gameId, gameIdErr] = $(params.gameId).type(ID).get();
 	if (gameIdErr) return rej('invalid gameId param');
 
 	const game = await OthelloGame.findOne({ _id: gameId });
diff --git a/src/server/api/endpoints/othello/match.ts b/src/server/api/endpoints/othello/match.ts
index b73b64437b..9769c94da3 100644
--- a/src/server/api/endpoints/othello/match.ts
+++ b/src/server/api/endpoints/othello/match.ts
@@ -7,7 +7,7 @@ import { eighteight } from '../../../../othello/maps';
 
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [childId, childIdErr] = $(params.userId).type(ID).$;
+	const [childId, childIdErr] = $(params.userId).type(ID).get();
 	if (childIdErr) return rej('invalid userId param');
 
 	// Myself
diff --git a/src/server/api/endpoints/sw/register.ts b/src/server/api/endpoints/sw/register.ts
index 3fe0bda4ee..222e6edc8e 100644
--- a/src/server/api/endpoints/sw/register.ts
+++ b/src/server/api/endpoints/sw/register.ts
@@ -9,15 +9,15 @@ import Subscription from '../../../../models/sw-subscription';
  */
 module.exports = async (params, user, app) => new Promise(async (res, rej) => {
 	// Get 'endpoint' parameter
-	const [endpoint, endpointErr] = $(params.endpoint).string().$;
+	const [endpoint, endpointErr] = $(params.endpoint).string().get();
 	if (endpointErr) return rej('invalid endpoint param');
 
 	// Get 'auth' parameter
-	const [auth, authErr] = $(params.auth).string().$;
+	const [auth, authErr] = $(params.auth).string().get();
 	if (authErr) return rej('invalid auth param');
 
 	// Get 'publickey' parameter
-	const [publickey, publickeyErr] = $(params.publickey).string().$;
+	const [publickey, publickeyErr] = $(params.publickey).string().get();
 	if (publickeyErr) return rej('invalid publickey param');
 
 	// if already subscribed
diff --git a/src/server/api/endpoints/username/available.ts b/src/server/api/endpoints/username/available.ts
index bd27c37de0..65b297683d 100644
--- a/src/server/api/endpoints/username/available.ts
+++ b/src/server/api/endpoints/username/available.ts
@@ -13,7 +13,7 @@ import { validateUsername } from '../../../../models/user';
  */
 module.exports = async (params) => new Promise(async (res, rej) => {
 	// Get 'username' parameter
-	const [username, usernameError] = $(params.username).string().pipe(validateUsername).$;
+	const [username, usernameError] = $(params.username).string().pipe(validateUsername).get();
 	if (usernameError) return rej('invalid username param');
 
 	// Get exist
diff --git a/src/server/api/endpoints/users.ts b/src/server/api/endpoints/users.ts
index 5b389d452f..2f7d00fa84 100644
--- a/src/server/api/endpoints/users.ts
+++ b/src/server/api/endpoints/users.ts
@@ -9,15 +9,15 @@ import User, { pack } from '../../../models/user';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).$;
+	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get 'sort' parameter
-	const [sort, sortError] = $(params.sort).optional.string().or('+follower|-follower').$;
+	const [sort, sortError] = $(params.sort).optional.string().or('+follower|-follower').get();
 	if (sortError) return rej('invalid sort param');
 
 	// Construct query
diff --git a/src/server/api/endpoints/users/followers.ts b/src/server/api/endpoints/users/followers.ts
index 940b5ed9bc..7892f633d4 100644
--- a/src/server/api/endpoints/users/followers.ts
+++ b/src/server/api/endpoints/users/followers.ts
@@ -12,19 +12,19 @@ import { getFriendIds } from '../../common/get-friends';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).$;
+	const [userId, userIdErr] = $(params.userId).type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// Get 'iknow' parameter
-	const [iknow = false, iknowErr] = $(params.iknow).optional.boolean().$;
+	const [iknow = false, iknowErr] = $(params.iknow).optional.boolean().get();
 	if (iknowErr) return rej('invalid iknow param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'cursor' parameter
-	const [cursor = null, cursorErr] = $(params.cursor).optional.type(ID).$;
+	const [cursor = null, cursorErr] = $(params.cursor).optional.type(ID).get();
 	if (cursorErr) return rej('invalid cursor param');
 
 	// Lookup user
diff --git a/src/server/api/endpoints/users/following.ts b/src/server/api/endpoints/users/following.ts
index 63a73a2e27..e584e61f9c 100644
--- a/src/server/api/endpoints/users/following.ts
+++ b/src/server/api/endpoints/users/following.ts
@@ -16,19 +16,19 @@ import { getFriendIds } from '../../common/get-friends';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).$;
+	const [userId, userIdErr] = $(params.userId).type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// Get 'iknow' parameter
-	const [iknow = false, iknowErr] = $(params.iknow).optional.boolean().$;
+	const [iknow = false, iknowErr] = $(params.iknow).optional.boolean().get();
 	if (iknowErr) return rej('invalid iknow param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'cursor' parameter
-	const [cursor = null, cursorErr] = $(params.cursor).optional.type(ID).$;
+	const [cursor = null, cursorErr] = $(params.cursor).optional.type(ID).get();
 	if (cursorErr) return rej('invalid cursor param');
 
 	// Lookup user
diff --git a/src/server/api/endpoints/users/get_frequently_replied_users.ts b/src/server/api/endpoints/users/get_frequently_replied_users.ts
index 4c00620a52..034684260c 100644
--- a/src/server/api/endpoints/users/get_frequently_replied_users.ts
+++ b/src/server/api/endpoints/users/get_frequently_replied_users.ts
@@ -7,11 +7,11 @@ import User, { pack } from '../../../../models/user';
 
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).$;
+	const [userId, userIdErr] = $(params.userId).type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Lookup user
diff --git a/src/server/api/endpoints/users/lists/create.ts b/src/server/api/endpoints/users/lists/create.ts
index 6ae510f52b..79a680c736 100644
--- a/src/server/api/endpoints/users/lists/create.ts
+++ b/src/server/api/endpoints/users/lists/create.ts
@@ -9,7 +9,7 @@ import UserList, { pack } from '../../../../../models/user-list';
  */
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'title' parameter
-	const [title, titleErr] = $(params.title).string().range(1, 100).$;
+	const [title, titleErr] = $(params.title).string().range(1, 100).get();
 	if (titleErr) return rej('invalid title param');
 
 	// insert
diff --git a/src/server/api/endpoints/users/lists/push.ts b/src/server/api/endpoints/users/lists/push.ts
index 5d6f201524..ceb5692c81 100644
--- a/src/server/api/endpoints/users/lists/push.ts
+++ b/src/server/api/endpoints/users/lists/push.ts
@@ -11,7 +11,7 @@ import { deliver } from '../../../../../queue';
  */
 module.exports = async (params, me) => new Promise(async (res, rej) => {
 	// Get 'listId' parameter
-	const [listId, listIdErr] = $(params.listId).type(ID).$;
+	const [listId, listIdErr] = $(params.listId).type(ID).get();
 	if (listIdErr) return rej('invalid listId param');
 
 	// Fetch the list
@@ -25,7 +25,7 @@ module.exports = async (params, me) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).$;
+	const [userId, userIdErr] = $(params.userId).type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// Fetch the user
diff --git a/src/server/api/endpoints/users/lists/show.ts b/src/server/api/endpoints/users/lists/show.ts
index 61e0f0463f..54e1df7b2f 100644
--- a/src/server/api/endpoints/users/lists/show.ts
+++ b/src/server/api/endpoints/users/lists/show.ts
@@ -6,7 +6,7 @@ import UserList, { pack } from '../../../../../models/user-list';
  */
 module.exports = async (params, me) => new Promise(async (res, rej) => {
 	// Get 'listId' parameter
-	const [listId, listIdErr] = $(params.listId).type(ID).$;
+	const [listId, listIdErr] = $(params.listId).type(ID).get();
 	if (listIdErr) return rej('invalid listId param');
 
 	// Fetch the list
diff --git a/src/server/api/endpoints/users/notes.ts b/src/server/api/endpoints/users/notes.ts
index dafa18bcc9..67b14b36a3 100644
--- a/src/server/api/endpoints/users/notes.ts
+++ b/src/server/api/endpoints/users/notes.ts
@@ -11,11 +11,11 @@ import User from '../../../../models/user';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).optional.type(ID).$;
+	const [userId, userIdErr] = $(params.userId).optional.type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// Get 'username' parameter
-	const [username, usernameErr] = $(params.username).optional.string().$;
+	const [username, usernameErr] = $(params.username).optional.string().get();
 	if (usernameErr) return rej('invalid username param');
 
 	if (userId === undefined && username === undefined) {
@@ -23,7 +23,7 @@ module.exports = (params, me) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'host' parameter
-	const [host, hostErr] = $(params.host).optional.string().$;
+	const [host, hostErr] = $(params.host).optional.string().get();
 	if (hostErr) return rej('invalid host param');
 
 	if (userId === undefined && host === undefined) {
@@ -31,31 +31,31 @@ module.exports = (params, me) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'includeReplies' parameter
-	const [includeReplies = true, includeRepliesErr] = $(params.includeReplies).optional.boolean().$;
+	const [includeReplies = true, includeRepliesErr] = $(params.includeReplies).optional.boolean().get();
 	if (includeRepliesErr) return rej('invalid includeReplies param');
 
 	// Get 'withMedia' parameter
-	const [withMedia = false, withMediaErr] = $(params.withMedia).optional.boolean().$;
+	const [withMedia = false, withMediaErr] = $(params.withMedia).optional.boolean().get();
 	if (withMediaErr) return rej('invalid withMedia param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).$;
+	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).$;
+	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Get 'sinceDate' parameter
-	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().$;
+	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().get();
 	if (sinceDateErr) throw 'invalid sinceDate param';
 
 	// Get 'untilDate' parameter
-	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().$;
+	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().get();
 	if (untilDateErr) throw 'invalid untilDate param';
 
 	// Check if only one of sinceId, untilId, sinceDate, untilDate specified
diff --git a/src/server/api/endpoints/users/recommendation.ts b/src/server/api/endpoints/users/recommendation.ts
index f72bb04bf1..f48ac7cb28 100644
--- a/src/server/api/endpoints/users/recommendation.ts
+++ b/src/server/api/endpoints/users/recommendation.ts
@@ -16,11 +16,11 @@ import Mute from '../../../../models/mute';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).$;
+	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
 	if (offsetErr) return rej('invalid offset param');
 
 	// ID list of the user itself and other users who the user follows
diff --git a/src/server/api/endpoints/users/search.ts b/src/server/api/endpoints/users/search.ts
index da30f47c2a..48630c6fd3 100644
--- a/src/server/api/endpoints/users/search.ts
+++ b/src/server/api/endpoints/users/search.ts
@@ -16,15 +16,15 @@ const escapeRegexp = require('escape-regexp');
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'query' parameter
-	const [query, queryError] = $(params.query).string().pipe(x => x != '').$;
+	const [query, queryError] = $(params.query).string().pipe(x => x != '').get();
 	if (queryError) return rej('invalid query param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).$;
+	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get 'max' parameter
-	const [max = 10, maxErr] = $(params.max).optional.number().range(1, 30).$;
+	const [max = 10, maxErr] = $(params.max).optional.number().range(1, 30).get();
 	if (maxErr) return rej('invalid max param');
 
 	// If Elasticsearch is available, search by $
diff --git a/src/server/api/endpoints/users/search_by_username.ts b/src/server/api/endpoints/users/search_by_username.ts
index 91d9ad1f3a..da38347956 100644
--- a/src/server/api/endpoints/users/search_by_username.ts
+++ b/src/server/api/endpoints/users/search_by_username.ts
@@ -9,15 +9,15 @@ import User, { pack } from '../../../../models/user';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'query' parameter
-	const [query, queryError] = $(params.query).string().$;
+	const [query, queryError] = $(params.query).string().get();
 	if (queryError) return rej('invalid query param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).$;
+	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
+	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
 	if (limitErr) return rej('invalid limit param');
 
 	const users = await User
diff --git a/src/server/api/endpoints/users/show.ts b/src/server/api/endpoints/users/show.ts
index 141565ece6..89a8684538 100644
--- a/src/server/api/endpoints/users/show.ts
+++ b/src/server/api/endpoints/users/show.ts
@@ -14,19 +14,19 @@ module.exports = (params, me) => new Promise(async (res, rej) => {
 	let user;
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).optional.type(ID).$;
+	const [userId, userIdErr] = $(params.userId).optional.type(ID).get();
 	if (userIdErr) return rej('invalid userId param');
 
 	// Get 'userIds' parameter
-	const [userIds, userIdsErr] = $(params.userIds).optional.array($().type(ID)).$;
+	const [userIds, userIdsErr] = $(params.userIds).optional.array($().type(ID)).get();
 	if (userIdsErr) return rej('invalid userIds param');
 
 	// Get 'username' parameter
-	const [username, usernameErr] = $(params.username).optional.string().$;
+	const [username, usernameErr] = $(params.username).optional.string().get();
 	if (usernameErr) return rej('invalid username param');
 
 	// Get 'host' parameter
-	const [host, hostErr] = $(params.host).nullable.optional.string().$;
+	const [host, hostErr] = $(params.host).nullable.optional.string().get();
 	if (hostErr) return rej('invalid host param');
 
 	if (userIds) {
diff --git a/webpack.config.ts b/webpack.config.ts
index 96eaf9f4c8..0e12fda633 100644
--- a/webpack.config.ts
+++ b/webpack.config.ts
@@ -5,6 +5,7 @@
 import * as fs from 'fs';
 import * as webpack from 'webpack';
 import chalk from 'chalk';
+const { VueLoaderPlugin } = require('vue-loader');
 import jsonImporter from 'node-sass-json-importer';
 const minifyHtml = require('html-minifier').minify;
 const WebpackOnBuildPlugin = require('on-build-webpack');
@@ -117,7 +118,8 @@ module.exports = entries.map(x => {
 			fs.writeFileSync('./built/client/meta.json', JSON.stringify({
 				version
 			}), 'utf-8');
-		})
+		}),
+		new VueLoaderPlugin()
 	];
 
 	if (isProduction) {
@@ -135,7 +137,9 @@ module.exports = entries.map(x => {
 					loader: 'vue-loader',
 					options: {
 						cssSourceMap: false,
-						preserveWhitespace: false
+						compilerOptions: {
+							preserveWhitespace: false
+						}
 					}
 				}, {
 					loader: 'replace',
@@ -165,17 +169,32 @@ module.exports = entries.map(x => {
 					}
 				}]
 			}, {
-				test: /\.styl$/,
+				test: /\.styl(us)?$/,
 				exclude: /node_modules/,
-				use: [{
-					loader: 'style-loader'
+				oneOf: [{
+					resourceQuery: /module/,
+					use: [{
+						loader: 'vue-style-loader'
+					}, {
+						loader: 'css-loader',
+						options: {
+							modules: true,
+							minimize: true
+						}
+					}, {
+						loader: 'stylus-loader'
+					}]
 				}, {
-					loader: 'css-loader',
-					options: {
-						minimize: true
-					}
-				}, {
-					loader: 'stylus-loader'
+					use: [{
+						loader: 'vue-style-loader'
+					}, {
+						loader: 'css-loader',
+						options: {
+							minimize: true
+						}
+					}, {
+						loader: 'stylus-loader'
+					}]
 				}]
 			}, {
 				test: /\.scss$/,
@@ -196,7 +215,7 @@ module.exports = entries.map(x => {
 			}, {
 				test: /\.css$/,
 				use: [{
-					loader: 'style-loader'
+					loader: 'vue-style-loader'
 				}, {
 					loader: 'css-loader',
 					options: {
-- 
cgit v1.2.3-freya


From f664cf09c0860e0cf9920722532c6315fa35a8a1 Mon Sep 17 00:00:00 2001
From: syuilo <syuilotan@yahoo.co.jp>
Date: Wed, 2 May 2018 18:06:16 +0900
Subject: Update cafy to 8.0.0 :rocket:

---
 package.json                                       |  2 +-
 src/cafy-id.ts                                     |  6 +--
 src/models/note-reaction.ts                        |  2 +-
 src/server/api/endpoints/aggregation/posts.ts      |  2 +-
 src/server/api/endpoints/aggregation/users.ts      |  2 +-
 .../api/endpoints/aggregation/users/activity.ts    |  4 +-
 .../api/endpoints/aggregation/users/followers.ts   |  2 +-
 .../api/endpoints/aggregation/users/following.ts   |  2 +-
 src/server/api/endpoints/aggregation/users/post.ts |  2 +-
 .../api/endpoints/aggregation/users/reaction.ts    |  2 +-
 src/server/api/endpoints/app/create.ts             | 10 ++---
 src/server/api/endpoints/app/name_id/available.ts  |  2 +-
 src/server/api/endpoints/app/show.ts               |  4 +-
 src/server/api/endpoints/auth/accept.ts            |  2 +-
 src/server/api/endpoints/auth/session/generate.ts  |  2 +-
 src/server/api/endpoints/auth/session/show.ts      |  2 +-
 src/server/api/endpoints/auth/session/userkey.ts   |  4 +-
 src/server/api/endpoints/channels.ts               |  6 +--
 src/server/api/endpoints/channels/create.ts        |  2 +-
 src/server/api/endpoints/channels/notes.ts         |  8 ++--
 src/server/api/endpoints/channels/show.ts          |  2 +-
 src/server/api/endpoints/channels/unwatch.ts       |  2 +-
 src/server/api/endpoints/channels/watch.ts         |  2 +-
 src/server/api/endpoints/drive/files.ts            | 10 ++---
 src/server/api/endpoints/drive/files/create.ts     |  2 +-
 src/server/api/endpoints/drive/files/find.ts       |  4 +-
 src/server/api/endpoints/drive/files/show.ts       |  2 +-
 src/server/api/endpoints/drive/files/update.ts     |  6 +--
 .../api/endpoints/drive/files/upload_from_url.ts   |  4 +-
 src/server/api/endpoints/drive/folders.ts          |  8 ++--
 src/server/api/endpoints/drive/folders/create.ts   |  4 +-
 src/server/api/endpoints/drive/folders/find.ts     |  4 +-
 src/server/api/endpoints/drive/folders/show.ts     |  2 +-
 src/server/api/endpoints/drive/folders/update.ts   |  6 +--
 src/server/api/endpoints/drive/stream.ts           |  8 ++--
 src/server/api/endpoints/following/create.ts       |  2 +-
 src/server/api/endpoints/following/delete.ts       |  2 +-
 src/server/api/endpoints/following/stalk.ts        |  2 +-
 src/server/api/endpoints/following/unstalk.ts      |  2 +-
 src/server/api/endpoints/i/2fa/done.ts             |  2 +-
 src/server/api/endpoints/i/2fa/register.ts         |  2 +-
 src/server/api/endpoints/i/2fa/unregister.ts       |  2 +-
 src/server/api/endpoints/i/authorized_apps.ts      |  6 +--
 src/server/api/endpoints/i/change_password.ts      |  4 +-
 src/server/api/endpoints/i/favorites.ts            |  6 +--
 src/server/api/endpoints/i/notifications.ts        | 12 +++---
 src/server/api/endpoints/i/pin.ts                  |  2 +-
 src/server/api/endpoints/i/regenerate_token.ts     |  2 +-
 src/server/api/endpoints/i/signin_history.ts       |  6 +--
 src/server/api/endpoints/i/update.ts               | 16 ++++----
 .../api/endpoints/i/update_client_setting.ts       |  6 +--
 src/server/api/endpoints/i/update_home.ts          | 18 +++++----
 src/server/api/endpoints/i/update_mobile_home.ts   | 15 +++----
 src/server/api/endpoints/messaging/history.ts      |  2 +-
 src/server/api/endpoints/messaging/messages.ts     | 10 ++---
 .../api/endpoints/messaging/messages/create.ts     |  6 +--
 src/server/api/endpoints/mute/create.ts            |  2 +-
 src/server/api/endpoints/mute/delete.ts            |  2 +-
 src/server/api/endpoints/mute/list.ts              |  6 +--
 src/server/api/endpoints/my/apps.ts                |  4 +-
 src/server/api/endpoints/notes.ts                  | 16 ++++----
 src/server/api/endpoints/notes/context.ts          |  6 +--
 src/server/api/endpoints/notes/create.ts           | 46 +++++++++++-----------
 src/server/api/endpoints/notes/favorites/create.ts |  2 +-
 src/server/api/endpoints/notes/favorites/delete.ts |  2 +-
 src/server/api/endpoints/notes/global-timeline.ts  | 10 ++---
 src/server/api/endpoints/notes/local-timeline.ts   | 10 ++---
 src/server/api/endpoints/notes/mentions.ts         |  8 ++--
 .../api/endpoints/notes/polls/recommendation.ts    |  4 +-
 src/server/api/endpoints/notes/polls/vote.ts       |  6 +--
 src/server/api/endpoints/notes/reactions.ts        |  8 ++--
 src/server/api/endpoints/notes/reactions/create.ts |  4 +-
 src/server/api/endpoints/notes/reactions/delete.ts |  2 +-
 src/server/api/endpoints/notes/replies.ts          |  8 ++--
 src/server/api/endpoints/notes/reposts.ts          |  8 ++--
 src/server/api/endpoints/notes/search.ts           | 30 +++++++-------
 src/server/api/endpoints/notes/show.ts             |  2 +-
 src/server/api/endpoints/notes/timeline.ts         | 14 +++----
 src/server/api/endpoints/notes/trend.ts            | 12 +++---
 .../api/endpoints/notes/user-list-timeline.ts      | 16 ++++----
 src/server/api/endpoints/othello/games.ts          |  8 ++--
 src/server/api/endpoints/othello/games/show.ts     |  2 +-
 src/server/api/endpoints/othello/match.ts          |  2 +-
 src/server/api/endpoints/sw/register.ts            |  6 +--
 src/server/api/endpoints/username/available.ts     |  2 +-
 src/server/api/endpoints/users.ts                  |  6 +--
 src/server/api/endpoints/users/followers.ts        |  8 ++--
 src/server/api/endpoints/users/following.ts        |  8 ++--
 .../users/get_frequently_replied_users.ts          |  4 +-
 src/server/api/endpoints/users/lists/create.ts     |  2 +-
 src/server/api/endpoints/users/lists/push.ts       |  4 +-
 src/server/api/endpoints/users/lists/show.ts       |  2 +-
 src/server/api/endpoints/users/notes.ts            | 20 +++++-----
 src/server/api/endpoints/users/recommendation.ts   |  4 +-
 src/server/api/endpoints/users/search.ts           |  6 +--
 .../api/endpoints/users/search_by_username.ts      |  6 +--
 src/server/api/endpoints/users/show.ts             |  8 ++--
 97 files changed, 294 insertions(+), 291 deletions(-)

(limited to 'src/server/api/endpoints/users/show.ts')

diff --git a/package.json b/package.json
index ddf4b10616..d3c2ad8170 100644
--- a/package.json
+++ b/package.json
@@ -88,7 +88,7 @@
 		"autwh": "0.1.0",
 		"bcryptjs": "2.4.3",
 		"bootstrap-vue": "2.0.0-rc.6",
-		"cafy": "7.0.1",
+		"cafy": "8.0.0",
 		"chai": "4.1.2",
 		"chai-http": "4.0.0",
 		"chalk": "2.4.1",
diff --git a/src/cafy-id.ts b/src/cafy-id.ts
index 3faf5cd996..310b1eb20b 100644
--- a/src/cafy-id.ts
+++ b/src/cafy-id.ts
@@ -8,8 +8,8 @@ export const isNotAnId = x => !isAnId(x);
  * ID
  */
 export default class ID extends Query<mongo.ObjectID> {
-	constructor(...args) {
-		super(...args);
+	constructor() {
+		super();
 
 		this.transform = v => {
 			if (isAnId(v) && !mongo.ObjectID.prototype.isPrototypeOf(v)) {
@@ -19,7 +19,7 @@ export default class ID extends Query<mongo.ObjectID> {
 			}
 		};
 
-		this.pushValidator(v => {
+		this.push(v => {
 			if (!mongo.ObjectID.prototype.isPrototypeOf(v) && isNotAnId(v)) {
 				return new Error('must-be-an-id');
 			}
diff --git a/src/models/note-reaction.ts b/src/models/note-reaction.ts
index 7891ebdf17..706ae54c16 100644
--- a/src/models/note-reaction.ts
+++ b/src/models/note-reaction.ts
@@ -17,7 +17,7 @@ export interface INoteReaction {
 	reaction: string;
 }
 
-export const validateReaction = $().string().or([
+export const validateReaction = $.str.or([
 	'like',
 	'love',
 	'laugh',
diff --git a/src/server/api/endpoints/aggregation/posts.ts b/src/server/api/endpoints/aggregation/posts.ts
index 87e9af3a56..d348cadae9 100644
--- a/src/server/api/endpoints/aggregation/posts.ts
+++ b/src/server/api/endpoints/aggregation/posts.ts
@@ -9,7 +9,7 @@ import Note from '../../../../models/note';
  */
 module.exports = params => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 365, limitErr] = $(params.limit).optional.number().range(1, 365).get();
+	const [limit = 365, limitErr] = $.num.optional().range(1, 365).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	const datas = await Note
diff --git a/src/server/api/endpoints/aggregation/users.ts b/src/server/api/endpoints/aggregation/users.ts
index 831d771333..b116c1454b 100644
--- a/src/server/api/endpoints/aggregation/users.ts
+++ b/src/server/api/endpoints/aggregation/users.ts
@@ -9,7 +9,7 @@ import User from '../../../../models/user';
  */
 module.exports = params => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 365, limitErr] = $(params.limit).optional.number().range(1, 365).get();
+	const [limit = 365, limitErr] = $.num.optional().range(1, 365).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	const users = await User
diff --git a/src/server/api/endpoints/aggregation/users/activity.ts b/src/server/api/endpoints/aggregation/users/activity.ts
index 4a982ac3ba..9109487ac6 100644
--- a/src/server/api/endpoints/aggregation/users/activity.ts
+++ b/src/server/api/endpoints/aggregation/users/activity.ts
@@ -12,11 +12,11 @@ import Note from '../../../../../models/note';
  */
 module.exports = (params) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 365, limitErr] = $(params.limit).optional.number().range(1, 365).get();
+	const [limit = 365, limitErr] = $.num.optional().range(1, 365).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).get();
+	const [userId, userIdErr] = $.type(ID).get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// Lookup user
diff --git a/src/server/api/endpoints/aggregation/users/followers.ts b/src/server/api/endpoints/aggregation/users/followers.ts
index 3079542c67..dfcaf8462f 100644
--- a/src/server/api/endpoints/aggregation/users/followers.ts
+++ b/src/server/api/endpoints/aggregation/users/followers.ts
@@ -10,7 +10,7 @@ import FollowedLog from '../../../../../models/followed-log';
  */
 module.exports = (params) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).get();
+	const [userId, userIdErr] = $.type(ID).get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// Lookup user
diff --git a/src/server/api/endpoints/aggregation/users/following.ts b/src/server/api/endpoints/aggregation/users/following.ts
index 4efe20230d..5f826fd71c 100644
--- a/src/server/api/endpoints/aggregation/users/following.ts
+++ b/src/server/api/endpoints/aggregation/users/following.ts
@@ -10,7 +10,7 @@ import FollowingLog from '../../../../../models/following-log';
  */
 module.exports = (params) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).get();
+	const [userId, userIdErr] = $.type(ID).get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// Lookup user
diff --git a/src/server/api/endpoints/aggregation/users/post.ts b/src/server/api/endpoints/aggregation/users/post.ts
index fc6541065b..11f9ef14cd 100644
--- a/src/server/api/endpoints/aggregation/users/post.ts
+++ b/src/server/api/endpoints/aggregation/users/post.ts
@@ -10,7 +10,7 @@ import Note from '../../../../../models/note';
  */
 module.exports = (params) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).get();
+	const [userId, userIdErr] = $.type(ID).get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// Lookup user
diff --git a/src/server/api/endpoints/aggregation/users/reaction.ts b/src/server/api/endpoints/aggregation/users/reaction.ts
index ea3363e1aa..2de2840258 100644
--- a/src/server/api/endpoints/aggregation/users/reaction.ts
+++ b/src/server/api/endpoints/aggregation/users/reaction.ts
@@ -13,7 +13,7 @@ import Reaction from '../../../../../models/note-reaction';
  */
 module.exports = (params) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).get();
+	const [userId, userIdErr] = $.type(ID).get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// Lookup user
diff --git a/src/server/api/endpoints/app/create.ts b/src/server/api/endpoints/app/create.ts
index 97154690fa..553bd2381a 100644
--- a/src/server/api/endpoints/app/create.ts
+++ b/src/server/api/endpoints/app/create.ts
@@ -67,24 +67,24 @@ import App, { isValidNameId, pack } from '../../../../models/app';
  */
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'nameId' parameter
-	const [nameId, nameIdErr] = $(params.nameId).string().pipe(isValidNameId).get();
+	const [nameId, nameIdErr] = $.str.pipe(isValidNameId).get(params.nameId);
 	if (nameIdErr) return rej('invalid nameId param');
 
 	// Get 'name' parameter
-	const [name, nameErr] = $(params.name).string().get();
+	const [name, nameErr] = $.str.get(params.name);
 	if (nameErr) return rej('invalid name param');
 
 	// Get 'description' parameter
-	const [description, descriptionErr] = $(params.description).string().get();
+	const [description, descriptionErr] = $.str.get(params.description);
 	if (descriptionErr) return rej('invalid description param');
 
 	// Get 'permission' parameter
-	const [permission, permissionErr] = $(params.permission).array($().string()).unique().get();
+	const [permission, permissionErr] = $.arr($.str).unique().get(params.permission);
 	if (permissionErr) return rej('invalid permission param');
 
 	// Get 'callbackUrl' parameter
 	// TODO: Check it is valid url
-	const [callbackUrl = null, callbackUrlErr] = $(params.callbackUrl).optional.nullable.string().get();
+	const [callbackUrl = null, callbackUrlErr] = $.str.optional().nullable().get(params.callbackUrl);
 	if (callbackUrlErr) return rej('invalid callbackUrl param');
 
 	// Generate secret
diff --git a/src/server/api/endpoints/app/name_id/available.ts b/src/server/api/endpoints/app/name_id/available.ts
index 8c32a780ec..135bb7d2b4 100644
--- a/src/server/api/endpoints/app/name_id/available.ts
+++ b/src/server/api/endpoints/app/name_id/available.ts
@@ -42,7 +42,7 @@ import { isValidNameId } from '../../../../../models/app';
  */
 module.exports = async (params) => new Promise(async (res, rej) => {
 	// Get 'nameId' parameter
-	const [nameId, nameIdErr] = $(params.nameId).string().pipe(isValidNameId).get();
+	const [nameId, nameIdErr] = $.str.pipe(isValidNameId).get(params.nameId);
 	if (nameIdErr) return rej('invalid nameId param');
 
 	// Get exist
diff --git a/src/server/api/endpoints/app/show.ts b/src/server/api/endpoints/app/show.ts
index 8408850285..8d742ab182 100644
--- a/src/server/api/endpoints/app/show.ts
+++ b/src/server/api/endpoints/app/show.ts
@@ -41,11 +41,11 @@ module.exports = (params, user, app) => new Promise(async (res, rej) => {
 	const isSecure = user != null && app == null;
 
 	// Get 'appId' parameter
-	const [appId, appIdErr] = $(params.appId).optional.type(ID).get();
+	const [appId, appIdErr] = $.type(ID).optional().get(params.appId);
 	if (appIdErr) return rej('invalid appId param');
 
 	// Get 'nameId' parameter
-	const [nameId, nameIdErr] = $(params.nameId).optional.string().get();
+	const [nameId, nameIdErr] = $.str.optional().get(params.nameId);
 	if (nameIdErr) return rej('invalid nameId param');
 
 	if (appId === undefined && nameId === undefined) {
diff --git a/src/server/api/endpoints/auth/accept.ts b/src/server/api/endpoints/auth/accept.ts
index cb271f9d67..695fbb0803 100644
--- a/src/server/api/endpoints/auth/accept.ts
+++ b/src/server/api/endpoints/auth/accept.ts
@@ -40,7 +40,7 @@ import AccessToken from '../../../../models/access-token';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'token' parameter
-	const [token, tokenErr] = $(params.token).string().get();
+	const [token, tokenErr] = $.str.get(params.token);
 	if (tokenErr) return rej('invalid token param');
 
 	// Fetch token
diff --git a/src/server/api/endpoints/auth/session/generate.ts b/src/server/api/endpoints/auth/session/generate.ts
index 8d243b85cf..d649a8d902 100644
--- a/src/server/api/endpoints/auth/session/generate.ts
+++ b/src/server/api/endpoints/auth/session/generate.ts
@@ -46,7 +46,7 @@ import config from '../../../../../config';
  */
 module.exports = (params) => new Promise(async (res, rej) => {
 	// Get 'appSecret' parameter
-	const [appSecret, appSecretErr] = $(params.appSecret).string().get();
+	const [appSecret, appSecretErr] = $.str.get(params.appSecret);
 	if (appSecretErr) return rej('invalid appSecret param');
 
 	// Lookup app
diff --git a/src/server/api/endpoints/auth/session/show.ts b/src/server/api/endpoints/auth/session/show.ts
index 87a43c94b9..434cc264a0 100644
--- a/src/server/api/endpoints/auth/session/show.ts
+++ b/src/server/api/endpoints/auth/session/show.ts
@@ -53,7 +53,7 @@ import AuthSess, { pack } from '../../../../../models/auth-session';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'token' parameter
-	const [token, tokenErr] = $(params.token).string().get();
+	const [token, tokenErr] = $.str.get(params.token);
 	if (tokenErr) return rej('invalid token param');
 
 	// Lookup session
diff --git a/src/server/api/endpoints/auth/session/userkey.ts b/src/server/api/endpoints/auth/session/userkey.ts
index 29642e6327..3026b477f1 100644
--- a/src/server/api/endpoints/auth/session/userkey.ts
+++ b/src/server/api/endpoints/auth/session/userkey.ts
@@ -51,7 +51,7 @@ import { pack } from '../../../../../models/user';
  */
 module.exports = (params) => new Promise(async (res, rej) => {
 	// Get 'appSecret' parameter
-	const [appSecret, appSecretErr] = $(params.appSecret).string().get();
+	const [appSecret, appSecretErr] = $.str.get(params.appSecret);
 	if (appSecretErr) return rej('invalid appSecret param');
 
 	// Lookup app
@@ -64,7 +64,7 @@ module.exports = (params) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'token' parameter
-	const [token, tokenErr] = $(params.token).string().get();
+	const [token, tokenErr] = $.str.get(params.token);
 	if (tokenErr) return rej('invalid token param');
 
 	// Fetch token
diff --git a/src/server/api/endpoints/channels.ts b/src/server/api/endpoints/channels.ts
index 9fd0fcb89c..ceef4b9cb9 100644
--- a/src/server/api/endpoints/channels.ts
+++ b/src/server/api/endpoints/channels.ts
@@ -13,15 +13,15 @@ import Channel, { pack } from '../../../models/channel';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/channels/create.ts b/src/server/api/endpoints/channels/create.ts
index 2574e0923d..0e3c9dc5ac 100644
--- a/src/server/api/endpoints/channels/create.ts
+++ b/src/server/api/endpoints/channels/create.ts
@@ -11,7 +11,7 @@ import { pack } from '../../../../models/channel';
  */
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'title' parameter
-	const [title, titleErr] = $(params.title).string().range(1, 100).get();
+	const [title, titleErr] = $.str.range(1, 100).get(params.title);
 	if (titleErr) return rej('invalid title param');
 
 	// Create a channel
diff --git a/src/server/api/endpoints/channels/notes.ts b/src/server/api/endpoints/channels/notes.ts
index a83cdb34c4..463152e74a 100644
--- a/src/server/api/endpoints/channels/notes.ts
+++ b/src/server/api/endpoints/channels/notes.ts
@@ -10,15 +10,15 @@ import Note, { pack } from '../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 1000, limitErr] = $(params.limit).optional.number().range(1, 1000).get();
+	const [limit = 1000, limitErr] = $.num.optional().range(1, 1000).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
@@ -27,7 +27,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'channelId' parameter
-	const [channelId, channelIdErr] = $(params.channelId).type(ID).get();
+	const [channelId, channelIdErr] = $.type(ID).get(params.channelId);
 	if (channelIdErr) return rej('invalid channelId param');
 
 	// Fetch channel
diff --git a/src/server/api/endpoints/channels/show.ts b/src/server/api/endpoints/channels/show.ts
index d5ca4ba3b7..1bba63d490 100644
--- a/src/server/api/endpoints/channels/show.ts
+++ b/src/server/api/endpoints/channels/show.ts
@@ -9,7 +9,7 @@ import Channel, { IChannel, pack } from '../../../../models/channel';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'channelId' parameter
-	const [channelId, channelIdErr] = $(params.channelId).type(ID).get();
+	const [channelId, channelIdErr] = $.type(ID).get(params.channelId);
 	if (channelIdErr) return rej('invalid channelId param');
 
 	// Fetch channel
diff --git a/src/server/api/endpoints/channels/unwatch.ts b/src/server/api/endpoints/channels/unwatch.ts
index 9385e209df..f7dddff461 100644
--- a/src/server/api/endpoints/channels/unwatch.ts
+++ b/src/server/api/endpoints/channels/unwatch.ts
@@ -10,7 +10,7 @@ import Watching from '../../../../models/channel-watching';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'channelId' parameter
-	const [channelId, channelIdErr] = $(params.channelId).type(ID).get();
+	const [channelId, channelIdErr] = $.type(ID).get(params.channelId);
 	if (channelIdErr) return rej('invalid channelId param');
 
 	//#region Fetch channel
diff --git a/src/server/api/endpoints/channels/watch.ts b/src/server/api/endpoints/channels/watch.ts
index ceda3b130a..34243ff68b 100644
--- a/src/server/api/endpoints/channels/watch.ts
+++ b/src/server/api/endpoints/channels/watch.ts
@@ -10,7 +10,7 @@ import Watching from '../../../../models/channel-watching';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'channelId' parameter
-	const [channelId, channelIdErr] = $(params.channelId).type(ID).get();
+	const [channelId, channelIdErr] = $.type(ID).get(params.channelId);
 	if (channelIdErr) return rej('invalid channelId param');
 
 	//#region Fetch channel
diff --git a/src/server/api/endpoints/drive/files.ts b/src/server/api/endpoints/drive/files.ts
index 52dfe60faf..ab4b18cef4 100644
--- a/src/server/api/endpoints/drive/files.ts
+++ b/src/server/api/endpoints/drive/files.ts
@@ -9,15 +9,15 @@ import DriveFile, { pack } from '../../../../models/drive-file';
  */
 module.exports = async (params, user, app) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) throw 'invalid limit param';
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) throw 'invalid sinceId param';
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) throw 'invalid untilId param';
 
 	// Check if both of sinceId and untilId is specified
@@ -26,11 +26,11 @@ module.exports = async (params, user, app) => {
 	}
 
 	// Get 'folderId' parameter
-	const [folderId = null, folderIdErr] = $(params.folderId).optional.nullable.type(ID).get();
+	const [folderId = null, folderIdErr] = $.type(ID).optional().nullable().get(params.folderId);
 	if (folderIdErr) throw 'invalid folderId param';
 
 	// Get 'type' parameter
-	const [type, typeErr] = $(params.type).optional.string().match(/^[a-zA-Z\/\-\*]+$/).get();
+	const [type, typeErr] = $.str.optional().match(/^[a-zA-Z\/\-\*]+$/).get(params.type);
 	if (typeErr) throw 'invalid type param';
 
 	// Construct query
diff --git a/src/server/api/endpoints/drive/files/create.ts b/src/server/api/endpoints/drive/files/create.ts
index b1a4bc9c52..e9348e4e2f 100644
--- a/src/server/api/endpoints/drive/files/create.ts
+++ b/src/server/api/endpoints/drive/files/create.ts
@@ -29,7 +29,7 @@ module.exports = async (file, params, user): Promise<any> => {
 	}
 
 	// Get 'folderId' parameter
-	const [folderId = null, folderIdErr] = $(params.folderId).optional.nullable.type(ID).get();
+	const [folderId = null, folderIdErr] = $.type(ID).optional().nullable().get(params.folderId);
 	if (folderIdErr) throw 'invalid folderId param';
 
 	try {
diff --git a/src/server/api/endpoints/drive/files/find.ts b/src/server/api/endpoints/drive/files/find.ts
index 4636d85050..98165990fe 100644
--- a/src/server/api/endpoints/drive/files/find.ts
+++ b/src/server/api/endpoints/drive/files/find.ts
@@ -9,11 +9,11 @@ import DriveFile, { pack } from '../../../../../models/drive-file';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'name' parameter
-	const [name, nameErr] = $(params.name).string().get();
+	const [name, nameErr] = $.str.get(params.name);
 	if (nameErr) return rej('invalid name param');
 
 	// Get 'folderId' parameter
-	const [folderId = null, folderIdErr] = $(params.folderId).optional.nullable.type(ID).get();
+	const [folderId = null, folderIdErr] = $.type(ID).optional().nullable().get(params.folderId);
 	if (folderIdErr) return rej('invalid folderId param');
 
 	// Issue query
diff --git a/src/server/api/endpoints/drive/files/show.ts b/src/server/api/endpoints/drive/files/show.ts
index 7e62e12fad..c7efda7ab0 100644
--- a/src/server/api/endpoints/drive/files/show.ts
+++ b/src/server/api/endpoints/drive/files/show.ts
@@ -9,7 +9,7 @@ import DriveFile, { pack } from '../../../../../models/drive-file';
  */
 module.exports = async (params, user) => {
 	// Get 'fileId' parameter
-	const [fileId, fileIdErr] = $(params.fileId).type(ID).get();
+	const [fileId, fileIdErr] = $.type(ID).get(params.fileId);
 	if (fileIdErr) throw 'invalid fileId param';
 
 	// Fetch file
diff --git a/src/server/api/endpoints/drive/files/update.ts b/src/server/api/endpoints/drive/files/update.ts
index c80e26771c..12fa8e025d 100644
--- a/src/server/api/endpoints/drive/files/update.ts
+++ b/src/server/api/endpoints/drive/files/update.ts
@@ -11,7 +11,7 @@ import { publishDriveStream } from '../../../../../publishers/stream';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'fileId' parameter
-	const [fileId, fileIdErr] = $(params.fileId).type(ID).get();
+	const [fileId, fileIdErr] = $.type(ID).get(params.fileId);
 	if (fileIdErr) return rej('invalid fileId param');
 
 	// Fetch file
@@ -26,12 +26,12 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'name' parameter
-	const [name, nameErr] = $(params.name).optional.string().pipe(validateFileName).get();
+	const [name, nameErr] = $.str.optional().pipe(validateFileName).get(params.name);
 	if (nameErr) return rej('invalid name param');
 	if (name) file.filename = name;
 
 	// Get 'folderId' parameter
-	const [folderId, folderIdErr] = $(params.folderId).optional.nullable.type(ID).get();
+	const [folderId, folderIdErr] = $.type(ID).optional().nullable().get(params.folderId);
 	if (folderIdErr) return rej('invalid folderId param');
 
 	if (folderId !== undefined) {
diff --git a/src/server/api/endpoints/drive/files/upload_from_url.ts b/src/server/api/endpoints/drive/files/upload_from_url.ts
index 540c317bee..c012f0d3c9 100644
--- a/src/server/api/endpoints/drive/files/upload_from_url.ts
+++ b/src/server/api/endpoints/drive/files/upload_from_url.ts
@@ -11,11 +11,11 @@ import uploadFromUrl from '../../../../../services/drive/upload-from-url';
 module.exports = async (params, user): Promise<any> => {
 	// Get 'url' parameter
 	// TODO: Validate this url
-	const [url, urlErr] = $(params.url).string().get();
+	const [url, urlErr] = $.str.get(params.url);
 	if (urlErr) throw 'invalid url param';
 
 	// Get 'folderId' parameter
-	const [folderId = null, folderIdErr] = $(params.folderId).optional.nullable.type(ID).get();
+	const [folderId = null, folderIdErr] = $.type(ID).optional().nullable().get(params.folderId);
 	if (folderIdErr) throw 'invalid folderId param';
 
 	return pack(await uploadFromUrl(url, user, folderId));
diff --git a/src/server/api/endpoints/drive/folders.ts b/src/server/api/endpoints/drive/folders.ts
index 8193a8317a..bc6c50eb99 100644
--- a/src/server/api/endpoints/drive/folders.ts
+++ b/src/server/api/endpoints/drive/folders.ts
@@ -9,15 +9,15 @@ import DriveFolder, { pack } from '../../../../models/drive-folder';
  */
 module.exports = (params, user, app) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
@@ -26,7 +26,7 @@ module.exports = (params, user, app) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'folderId' parameter
-	const [folderId = null, folderIdErr] = $(params.folderId).optional.nullable.type(ID).get();
+	const [folderId = null, folderIdErr] = $.type(ID).optional().nullable().get(params.folderId);
 	if (folderIdErr) return rej('invalid folderId param');
 
 	// Construct query
diff --git a/src/server/api/endpoints/drive/folders/create.ts b/src/server/api/endpoints/drive/folders/create.ts
index 487c1b2205..62e3b6f6e8 100644
--- a/src/server/api/endpoints/drive/folders/create.ts
+++ b/src/server/api/endpoints/drive/folders/create.ts
@@ -10,11 +10,11 @@ import { publishDriveStream } from '../../../../../publishers/stream';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'name' parameter
-	const [name = '無題のフォルダー', nameErr] = $(params.name).optional.string().pipe(isValidFolderName).get();
+	const [name = '無題のフォルダー', nameErr] = $.str.optional().pipe(isValidFolderName).get(params.name);
 	if (nameErr) return rej('invalid name param');
 
 	// Get 'parentId' parameter
-	const [parentId = null, parentIdErr] = $(params.parentId).optional.nullable.type(ID).get();
+	const [parentId = null, parentIdErr] = $.type(ID).optional().nullable().get(params.parentId);
 	if (parentIdErr) return rej('invalid parentId param');
 
 	// If the parent folder is specified
diff --git a/src/server/api/endpoints/drive/folders/find.ts b/src/server/api/endpoints/drive/folders/find.ts
index b8579219f9..9703d9e99d 100644
--- a/src/server/api/endpoints/drive/folders/find.ts
+++ b/src/server/api/endpoints/drive/folders/find.ts
@@ -9,11 +9,11 @@ import DriveFolder, { pack } from '../../../../../models/drive-folder';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'name' parameter
-	const [name, nameErr] = $(params.name).string().get();
+	const [name, nameErr] = $.str.get(params.name);
 	if (nameErr) return rej('invalid name param');
 
 	// Get 'parentId' parameter
-	const [parentId = null, parentIdErr] = $(params.parentId).optional.nullable.type(ID).get();
+	const [parentId = null, parentIdErr] = $.type(ID).optional().nullable().get(params.parentId);
 	if (parentIdErr) return rej('invalid parentId param');
 
 	// Issue query
diff --git a/src/server/api/endpoints/drive/folders/show.ts b/src/server/api/endpoints/drive/folders/show.ts
index 36d7f1c69f..44f1889001 100644
--- a/src/server/api/endpoints/drive/folders/show.ts
+++ b/src/server/api/endpoints/drive/folders/show.ts
@@ -9,7 +9,7 @@ import DriveFolder, { pack } from '../../../../../models/drive-folder';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'folderId' parameter
-	const [folderId, folderIdErr] = $(params.folderId).type(ID).get();
+	const [folderId, folderIdErr] = $.type(ID).get(params.folderId);
 	if (folderIdErr) return rej('invalid folderId param');
 
 	// Get folder
diff --git a/src/server/api/endpoints/drive/folders/update.ts b/src/server/api/endpoints/drive/folders/update.ts
index 64a6cd293a..e24d8a14cd 100644
--- a/src/server/api/endpoints/drive/folders/update.ts
+++ b/src/server/api/endpoints/drive/folders/update.ts
@@ -10,7 +10,7 @@ import { publishDriveStream } from '../../../../../publishers/stream';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'folderId' parameter
-	const [folderId, folderIdErr] = $(params.folderId).type(ID).get();
+	const [folderId, folderIdErr] = $.type(ID).get(params.folderId);
 	if (folderIdErr) return rej('invalid folderId param');
 
 	// Fetch folder
@@ -25,12 +25,12 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'name' parameter
-	const [name, nameErr] = $(params.name).optional.string().pipe(isValidFolderName).get();
+	const [name, nameErr] = $.str.optional().pipe(isValidFolderName).get(params.name);
 	if (nameErr) return rej('invalid name param');
 	if (name) folder.name = name;
 
 	// Get 'parentId' parameter
-	const [parentId, parentIdErr] = $(params.parentId).optional.nullable.type(ID).get();
+	const [parentId, parentIdErr] = $.type(ID).optional().nullable().get(params.parentId);
 	if (parentIdErr) return rej('invalid parentId param');
 	if (parentId !== undefined) {
 		if (parentId === null) {
diff --git a/src/server/api/endpoints/drive/stream.ts b/src/server/api/endpoints/drive/stream.ts
index b148f2ce51..8cb3a99b42 100644
--- a/src/server/api/endpoints/drive/stream.ts
+++ b/src/server/api/endpoints/drive/stream.ts
@@ -9,15 +9,15 @@ import DriveFile, { pack } from '../../../../models/drive-file';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
@@ -26,7 +26,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'type' parameter
-	const [type, typeErr] = $(params.type).optional.string().match(/^[a-zA-Z\/\-\*]+$/).get();
+	const [type, typeErr] = $.str.optional().match(/^[a-zA-Z\/\-\*]+$/).get(params.type);
 	if (typeErr) return rej('invalid type param');
 
 	// Construct query
diff --git a/src/server/api/endpoints/following/create.ts b/src/server/api/endpoints/following/create.ts
index 42a7b79b00..766a8c03d0 100644
--- a/src/server/api/endpoints/following/create.ts
+++ b/src/server/api/endpoints/following/create.ts
@@ -13,7 +13,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	const follower = user;
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).get();
+	const [userId, userIdErr] = $.type(ID).get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// 自分自身
diff --git a/src/server/api/endpoints/following/delete.ts b/src/server/api/endpoints/following/delete.ts
index 3aef6523de..396b19a6f6 100644
--- a/src/server/api/endpoints/following/delete.ts
+++ b/src/server/api/endpoints/following/delete.ts
@@ -13,7 +13,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	const follower = user;
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).get();
+	const [userId, userIdErr] = $.type(ID).get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// Check if the followee is yourself
diff --git a/src/server/api/endpoints/following/stalk.ts b/src/server/api/endpoints/following/stalk.ts
index 34e3f80f8a..f0bc8cbdfc 100644
--- a/src/server/api/endpoints/following/stalk.ts
+++ b/src/server/api/endpoints/following/stalk.ts
@@ -8,7 +8,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	const follower = user;
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).get();
+	const [userId, userIdErr] = $.type(ID).get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// Fetch following
diff --git a/src/server/api/endpoints/following/unstalk.ts b/src/server/api/endpoints/following/unstalk.ts
index f8ca39ef7d..0d0a018c34 100644
--- a/src/server/api/endpoints/following/unstalk.ts
+++ b/src/server/api/endpoints/following/unstalk.ts
@@ -8,7 +8,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	const follower = user;
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).get();
+	const [userId, userIdErr] = $.type(ID).get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// Fetch following
diff --git a/src/server/api/endpoints/i/2fa/done.ts b/src/server/api/endpoints/i/2fa/done.ts
index 310e5c574e..1a2706aa84 100644
--- a/src/server/api/endpoints/i/2fa/done.ts
+++ b/src/server/api/endpoints/i/2fa/done.ts
@@ -7,7 +7,7 @@ import User from '../../../../../models/user';
 
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'token' parameter
-	const [token, tokenErr] = $(params.token).string().get();
+	const [token, tokenErr] = $.str.get(params.token);
 	if (tokenErr) return rej('invalid token param');
 
 	const _token = token.replace(/\s/g, '');
diff --git a/src/server/api/endpoints/i/2fa/register.ts b/src/server/api/endpoints/i/2fa/register.ts
index 51f66dc2fe..d314e1a280 100644
--- a/src/server/api/endpoints/i/2fa/register.ts
+++ b/src/server/api/endpoints/i/2fa/register.ts
@@ -10,7 +10,7 @@ import config from '../../../../../config';
 
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'password' parameter
-	const [password, passwordErr] = $(params.password).string().get();
+	const [password, passwordErr] = $.str.get(params.password);
 	if (passwordErr) return rej('invalid password param');
 
 	// Compare password
diff --git a/src/server/api/endpoints/i/2fa/unregister.ts b/src/server/api/endpoints/i/2fa/unregister.ts
index 9fd940dcaf..336a3564ab 100644
--- a/src/server/api/endpoints/i/2fa/unregister.ts
+++ b/src/server/api/endpoints/i/2fa/unregister.ts
@@ -7,7 +7,7 @@ import User from '../../../../../models/user';
 
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'password' parameter
-	const [password, passwordErr] = $(params.password).string().get();
+	const [password, passwordErr] = $.str.get(params.password);
 	if (passwordErr) return rej('invalid password param');
 
 	// Compare password
diff --git a/src/server/api/endpoints/i/authorized_apps.ts b/src/server/api/endpoints/i/authorized_apps.ts
index 9635091465..d15bd67bf2 100644
--- a/src/server/api/endpoints/i/authorized_apps.ts
+++ b/src/server/api/endpoints/i/authorized_apps.ts
@@ -10,15 +10,15 @@ import { pack } from '../../../../models/app';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
+	const [offset = 0, offsetErr] = $.num.optional().min(0).get(params.offset);
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get 'sort' parameter
-	const [sort = 'desc', sortError] = $(params.sort).optional.string().or('desc asc').get();
+	const [sort = 'desc', sortError] = $.str.optional().or('desc asc').get(params.sort);
 	if (sortError) return rej('invalid sort param');
 
 	// Get tokens
diff --git a/src/server/api/endpoints/i/change_password.ts b/src/server/api/endpoints/i/change_password.ts
index 5c8c71d140..a1a1a43406 100644
--- a/src/server/api/endpoints/i/change_password.ts
+++ b/src/server/api/endpoints/i/change_password.ts
@@ -10,11 +10,11 @@ import User from '../../../../models/user';
  */
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'currentPasword' parameter
-	const [currentPassword, currentPasswordErr] = $(params.currentPasword).string().get();
+	const [currentPassword, currentPasswordErr] = $.str.get(params.currentPasword);
 	if (currentPasswordErr) return rej('invalid currentPasword param');
 
 	// Get 'newPassword' parameter
-	const [newPassword, newPasswordErr] = $(params.newPassword).string().get();
+	const [newPassword, newPasswordErr] = $.str.get(params.newPassword);
 	if (newPasswordErr) return rej('invalid newPassword param');
 
 	// Compare password
diff --git a/src/server/api/endpoints/i/favorites.ts b/src/server/api/endpoints/i/favorites.ts
index a65f673a7d..23517baaff 100644
--- a/src/server/api/endpoints/i/favorites.ts
+++ b/src/server/api/endpoints/i/favorites.ts
@@ -9,15 +9,15 @@ import Favorite, { pack } from '../../../../models/favorite';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/i/notifications.ts b/src/server/api/endpoints/i/notifications.ts
index a0bf2338a6..50ed9b27e8 100644
--- a/src/server/api/endpoints/i/notifications.ts
+++ b/src/server/api/endpoints/i/notifications.ts
@@ -14,27 +14,27 @@ import read from '../../common/read-notification';
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'following' parameter
 	const [following = false, followingError] =
-		$(params.following).optional.boolean().get();
+		$.bool.optional().get(params.following);
 	if (followingError) return rej('invalid following param');
 
 	// Get 'markAsRead' parameter
-	const [markAsRead = true, markAsReadErr] = $(params.markAsRead).optional.boolean().get();
+	const [markAsRead = true, markAsReadErr] = $.bool.optional().get(params.markAsRead);
 	if (markAsReadErr) return rej('invalid markAsRead param');
 
 	// Get 'type' parameter
-	const [type, typeErr] = $(params.type).optional.array($().string()).unique().get();
+	const [type, typeErr] = $.arr($.str).optional().unique().get(params.type);
 	if (typeErr) return rej('invalid type param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/i/pin.ts b/src/server/api/endpoints/i/pin.ts
index 1d995746dc..423f0ac4ae 100644
--- a/src/server/api/endpoints/i/pin.ts
+++ b/src/server/api/endpoints/i/pin.ts
@@ -11,7 +11,7 @@ import { pack } from '../../../../models/user';
  */
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
+	const [noteId, noteIdErr] = $.type(ID).get(params.noteId);
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Fetch pinee
diff --git a/src/server/api/endpoints/i/regenerate_token.ts b/src/server/api/endpoints/i/regenerate_token.ts
index df440c68ab..6e1e571297 100644
--- a/src/server/api/endpoints/i/regenerate_token.ts
+++ b/src/server/api/endpoints/i/regenerate_token.ts
@@ -12,7 +12,7 @@ import generateUserToken from '../../common/generate-native-user-token';
  */
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'password' parameter
-	const [password, passwordErr] = $(params.password).string().get();
+	const [password, passwordErr] = $.str.get(params.password);
 	if (passwordErr) return rej('invalid password param');
 
 	// Compare password
diff --git a/src/server/api/endpoints/i/signin_history.ts b/src/server/api/endpoints/i/signin_history.ts
index d505caad82..63a74b41b1 100644
--- a/src/server/api/endpoints/i/signin_history.ts
+++ b/src/server/api/endpoints/i/signin_history.ts
@@ -9,15 +9,15 @@ import Signin, { pack } from '../../../../models/signin';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/i/update.ts b/src/server/api/endpoints/i/update.ts
index 2b76497025..6ba4729951 100644
--- a/src/server/api/endpoints/i/update.ts
+++ b/src/server/api/endpoints/i/update.ts
@@ -12,42 +12,42 @@ module.exports = async (params, user, app) => new Promise(async (res, rej) => {
 	const isSecure = user != null && app == null;
 
 	// Get 'name' parameter
-	const [name, nameErr] = $(params.name).optional.nullable.string().pipe(isValidName).get();
+	const [name, nameErr] = $.str.optional().nullable().pipe(isValidName).get(params.name);
 	if (nameErr) return rej('invalid name param');
 	if (name) user.name = name;
 
 	// Get 'description' parameter
-	const [description, descriptionErr] = $(params.description).optional.nullable.string().pipe(isValidDescription).get();
+	const [description, descriptionErr] = $.str.optional().nullable().pipe(isValidDescription).get(params.description);
 	if (descriptionErr) return rej('invalid description param');
 	if (description !== undefined) user.description = description;
 
 	// Get 'location' parameter
-	const [location, locationErr] = $(params.location).optional.nullable.string().pipe(isValidLocation).get();
+	const [location, locationErr] = $.str.optional().nullable().pipe(isValidLocation).get(params.location);
 	if (locationErr) return rej('invalid location param');
 	if (location !== undefined) user.profile.location = location;
 
 	// Get 'birthday' parameter
-	const [birthday, birthdayErr] = $(params.birthday).optional.nullable.string().pipe(isValidBirthday).get();
+	const [birthday, birthdayErr] = $.str.optional().nullable().pipe(isValidBirthday).get(params.birthday);
 	if (birthdayErr) return rej('invalid birthday param');
 	if (birthday !== undefined) user.profile.birthday = birthday;
 
 	// Get 'avatarId' parameter
-	const [avatarId, avatarIdErr] = $(params.avatarId).optional.type(ID).get();
+	const [avatarId, avatarIdErr] = $.type(ID).optional().get(params.avatarId);
 	if (avatarIdErr) return rej('invalid avatarId param');
 	if (avatarId) user.avatarId = avatarId;
 
 	// Get 'bannerId' parameter
-	const [bannerId, bannerIdErr] = $(params.bannerId).optional.type(ID).get();
+	const [bannerId, bannerIdErr] = $.type(ID).optional().get(params.bannerId);
 	if (bannerIdErr) return rej('invalid bannerId param');
 	if (bannerId) user.bannerId = bannerId;
 
 	// Get 'isBot' parameter
-	const [isBot, isBotErr] = $(params.isBot).optional.boolean().get();
+	const [isBot, isBotErr] = $.bool.optional().get(params.isBot);
 	if (isBotErr) return rej('invalid isBot param');
 	if (isBot != null) user.isBot = isBot;
 
 	// Get 'autoWatch' parameter
-	const [autoWatch, autoWatchErr] = $(params.autoWatch).optional.boolean().get();
+	const [autoWatch, autoWatchErr] = $.bool.optional().get(params.autoWatch);
 	if (autoWatchErr) return rej('invalid autoWatch param');
 	if (autoWatch != null) user.settings.autoWatch = autoWatch;
 
diff --git a/src/server/api/endpoints/i/update_client_setting.ts b/src/server/api/endpoints/i/update_client_setting.ts
index 278eb1cbeb..e91d7565fd 100644
--- a/src/server/api/endpoints/i/update_client_setting.ts
+++ b/src/server/api/endpoints/i/update_client_setting.ts
@@ -2,7 +2,7 @@
  * Module dependencies
  */
 import $ from 'cafy';
-import User, { pack } from '../../../../models/user';
+import User from '../../../../models/user';
 import event from '../../../../publishers/stream';
 
 /**
@@ -10,11 +10,11 @@ import event from '../../../../publishers/stream';
  */
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'name' parameter
-	const [name, nameErr] = $(params.name).string().get();
+	const [name, nameErr] = $.str.get(params.name);
 	if (nameErr) return rej('invalid name param');
 
 	// Get 'value' parameter
-	const [value, valueErr] = $(params.value).nullable.any().get();
+	const [value, valueErr] = $.any.nullable().get(params.value);
 	if (valueErr) return rej('invalid value param');
 
 	const x = {};
diff --git a/src/server/api/endpoints/i/update_home.ts b/src/server/api/endpoints/i/update_home.ts
index baf9b739ae..8ce551957e 100644
--- a/src/server/api/endpoints/i/update_home.ts
+++ b/src/server/api/endpoints/i/update_home.ts
@@ -7,20 +7,22 @@ import event from '../../../../publishers/stream';
 
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'home' parameter
-	const [home, homeErr] = $(params.home).optional.array().each(
-		$().object(true)
-			.have('name', $().string())
-			.have('id', $().string())
-			.have('place', $().string())
-			.have('data', $().object())).get();
+	const [home, homeErr] = $.arr(
+		$.obj.strict()
+			.have('name', $.str)
+			.have('id', $.str)
+			.have('place', $.str)
+			.have('data', $.obj))
+		.optional()
+		.get(params.home);
 	if (homeErr) return rej('invalid home param');
 
 	// Get 'id' parameter
-	const [id, idErr] = $(params.id).optional.string().get();
+	const [id, idErr] = $.str.optional().get(params.id);
 	if (idErr) return rej('invalid id param');
 
 	// Get 'data' parameter
-	const [data, dataErr] = $(params.data).optional.object().get();
+	const [data, dataErr] = $.obj.optional().get(params.data);
 	if (dataErr) return rej('invalid data param');
 
 	if (home) {
diff --git a/src/server/api/endpoints/i/update_mobile_home.ts b/src/server/api/endpoints/i/update_mobile_home.ts
index 21d94839b7..d79a77072b 100644
--- a/src/server/api/endpoints/i/update_mobile_home.ts
+++ b/src/server/api/endpoints/i/update_mobile_home.ts
@@ -7,19 +7,20 @@ import event from '../../../../publishers/stream';
 
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'home' parameter
-	const [home, homeErr] = $(params.home).optional.array().each(
-		$().object(true)
-			.have('name', $().string())
-			.have('id', $().string())
-			.have('data', $().object())).get();
+	const [home, homeErr] = $.arr(
+		$.obj.strict()
+			.have('name', $.str)
+			.have('id', $.str)
+			.have('data', $.obj))
+		.optional().get(params.home);
 	if (homeErr) return rej('invalid home param');
 
 	// Get 'id' parameter
-	const [id, idErr] = $(params.id).optional.string().get();
+	const [id, idErr] = $.str.optional().get(params.id);
 	if (idErr) return rej('invalid id param');
 
 	// Get 'data' parameter
-	const [data, dataErr] = $(params.data).optional.object().get();
+	const [data, dataErr] = $.obj.optional().get(params.data);
 	if (dataErr) return rej('invalid data param');
 
 	if (home) {
diff --git a/src/server/api/endpoints/messaging/history.ts b/src/server/api/endpoints/messaging/history.ts
index 9fd1f80d7b..ec97642f17 100644
--- a/src/server/api/endpoints/messaging/history.ts
+++ b/src/server/api/endpoints/messaging/history.ts
@@ -11,7 +11,7 @@ import { pack } from '../../../../models/messaging-message';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	const mute = await Mute.find({
diff --git a/src/server/api/endpoints/messaging/messages.ts b/src/server/api/endpoints/messaging/messages.ts
index f154133a12..0338aba68a 100644
--- a/src/server/api/endpoints/messaging/messages.ts
+++ b/src/server/api/endpoints/messaging/messages.ts
@@ -16,7 +16,7 @@ import read from '../../common/read-messaging-message';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [recipientId, recipientIdErr] = $(params.userId).type(ID).get();
+	const [recipientId, recipientIdErr] = $.type(ID).get(params.userId);
 	if (recipientIdErr) return rej('invalid userId param');
 
 	// Fetch recipient
@@ -33,19 +33,19 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'markAsRead' parameter
-	const [markAsRead = true, markAsReadErr] = $(params.markAsRead).optional.boolean().get();
+	const [markAsRead = true, markAsReadErr] = $.bool.optional().get(params.markAsRead);
 	if (markAsReadErr) return rej('invalid markAsRead param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/messaging/messages/create.ts b/src/server/api/endpoints/messaging/messages/create.ts
index 8b708eeaa9..db471839e7 100644
--- a/src/server/api/endpoints/messaging/messages/create.ts
+++ b/src/server/api/endpoints/messaging/messages/create.ts
@@ -19,7 +19,7 @@ import config from '../../../../../config';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [recipientId, recipientIdErr] = $(params.userId).type(ID).get();
+	const [recipientId, recipientIdErr] = $.type(ID).get(params.userId);
 	if (recipientIdErr) return rej('invalid userId param');
 
 	// Myself
@@ -41,11 +41,11 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'text' parameter
-	const [text, textErr] = $(params.text).optional.string().pipe(isValidText).get();
+	const [text, textErr] = $.str.optional().pipe(isValidText).get(params.text);
 	if (textErr) return rej('invalid text');
 
 	// Get 'fileId' parameter
-	const [fileId, fileIdErr] = $(params.fileId).optional.type(ID).get();
+	const [fileId, fileIdErr] = $.type(ID).optional().get(params.fileId);
 	if (fileIdErr) return rej('invalid fileId param');
 
 	let file = null;
diff --git a/src/server/api/endpoints/mute/create.ts b/src/server/api/endpoints/mute/create.ts
index aa9f6eb731..534020c671 100644
--- a/src/server/api/endpoints/mute/create.ts
+++ b/src/server/api/endpoints/mute/create.ts
@@ -12,7 +12,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	const muter = user;
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).get();
+	const [userId, userIdErr] = $.type(ID).get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// 自分自身
diff --git a/src/server/api/endpoints/mute/delete.ts b/src/server/api/endpoints/mute/delete.ts
index f24db6770d..949aff64ba 100644
--- a/src/server/api/endpoints/mute/delete.ts
+++ b/src/server/api/endpoints/mute/delete.ts
@@ -12,7 +12,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 	const muter = user;
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).get();
+	const [userId, userIdErr] = $.type(ID).get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// Check if the mutee is yourself
diff --git a/src/server/api/endpoints/mute/list.ts b/src/server/api/endpoints/mute/list.ts
index f7199db64e..cf89f7e959 100644
--- a/src/server/api/endpoints/mute/list.ts
+++ b/src/server/api/endpoints/mute/list.ts
@@ -11,15 +11,15 @@ import { getFriendIds } from '../../common/get-friends';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'iknow' parameter
-	const [iknow = false, iknowErr] = $(params.iknow).optional.boolean().get();
+	const [iknow = false, iknowErr] = $.bool.optional().get(params.iknow);
 	if (iknowErr) return rej('invalid iknow param');
 
 	// Get 'limit' parameter
-	const [limit = 30, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 30, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'cursor' parameter
-	const [cursor = null, cursorErr] = $(params.cursor).optional.type(ID).get();
+	const [cursor = null, cursorErr] = $.type(ID).optional().get(params.cursor);
 	if (cursorErr) return rej('invalid cursor param');
 
 	// Construct query
diff --git a/src/server/api/endpoints/my/apps.ts b/src/server/api/endpoints/my/apps.ts
index 3b58b30241..086e0b8965 100644
--- a/src/server/api/endpoints/my/apps.ts
+++ b/src/server/api/endpoints/my/apps.ts
@@ -9,11 +9,11 @@ import App, { pack } from '../../../../models/app';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
+	const [offset = 0, offsetErr] = $.num.optional().min(0).get(params.offset);
 	if (offsetErr) return rej('invalid offset param');
 
 	const query = {
diff --git a/src/server/api/endpoints/notes.ts b/src/server/api/endpoints/notes.ts
index 7be35961d2..4ce7613d70 100644
--- a/src/server/api/endpoints/notes.ts
+++ b/src/server/api/endpoints/notes.ts
@@ -9,35 +9,35 @@ import Note, { pack } from '../../../models/note';
  */
 module.exports = (params) => new Promise(async (res, rej) => {
 	// Get 'reply' parameter
-	const [reply, replyErr] = $(params.reply).optional.boolean().get();
+	const [reply, replyErr] = $.bool.optional().get(params.reply);
 	if (replyErr) return rej('invalid reply param');
 
 	// Get 'renote' parameter
-	const [renote, renoteErr] = $(params.renote).optional.boolean().get();
+	const [renote, renoteErr] = $.bool.optional().get(params.renote);
 	if (renoteErr) return rej('invalid renote param');
 
 	// Get 'media' parameter
-	const [media, mediaErr] = $(params.media).optional.boolean().get();
+	const [media, mediaErr] = $.bool.optional().get(params.media);
 	if (mediaErr) return rej('invalid media param');
 
 	// Get 'poll' parameter
-	const [poll, pollErr] = $(params.poll).optional.boolean().get();
+	const [poll, pollErr] = $.bool.optional().get(params.poll);
 	if (pollErr) return rej('invalid poll param');
 
 	// Get 'bot' parameter
-	//const [bot, botErr] = $(params.bot).optional.boolean().get();
+	//const [bot, botErr] = $.bool.optional().get(params.bot);
 	//if (botErr) return rej('invalid bot param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/notes/context.ts b/src/server/api/endpoints/notes/context.ts
index 7e3533cfd8..1cd27250e2 100644
--- a/src/server/api/endpoints/notes/context.ts
+++ b/src/server/api/endpoints/notes/context.ts
@@ -13,15 +13,15 @@ import Note, { pack } from '../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
+	const [noteId, noteIdErr] = $.type(ID).get(params.noteId);
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
+	const [offset = 0, offsetErr] = $.num.optional().min(0).get(params.offset);
 	if (offsetErr) return rej('invalid offset param');
 
 	// Lookup note
diff --git a/src/server/api/endpoints/notes/create.ts b/src/server/api/endpoints/notes/create.ts
index 52c6068fd0..fe947174d1 100644
--- a/src/server/api/endpoints/notes/create.ts
+++ b/src/server/api/endpoints/notes/create.ts
@@ -14,11 +14,11 @@ import { IApp } from '../../../../models/app';
  */
 module.exports = (params, user: ILocalUser, app: IApp) => new Promise(async (res, rej) => {
 	// Get 'visibility' parameter
-	const [visibility = 'public', visibilityErr] = $(params.visibility).optional.string().or(['public', 'home', 'followers', 'specified', 'private']).get();
+	const [visibility = 'public', visibilityErr] = $.str.optional().or(['public', 'home', 'followers', 'specified', 'private']).get(params.visibility);
 	if (visibilityErr) return rej('invalid visibility');
 
 	// Get 'visibleUserIds' parameter
-	const [visibleUserIds, visibleUserIdsErr] = $(params.visibleUserIds).optional.array($().type(ID)).unique().min(1).get();
+	const [visibleUserIds, visibleUserIdsErr] = $.arr($.type(ID)).optional().unique().min(1).get(params.visibleUserIds);
 	if (visibleUserIdsErr) return rej('invalid visibleUserIds');
 
 	let visibleUsers = [];
@@ -29,36 +29,36 @@ module.exports = (params, user: ILocalUser, app: IApp) => new Promise(async (res
 	}
 
 	// Get 'text' parameter
-	const [text = null, textErr] = $(params.text).optional.nullable.string().pipe(isValidText).get();
+	const [text = null, textErr] = $.str.optional().nullable().pipe(isValidText).get(params.text);
 	if (textErr) return rej('invalid text');
 
 	// Get 'cw' parameter
-	const [cw, cwErr] = $(params.cw).optional.nullable.string().pipe(isValidCw).get();
+	const [cw, cwErr] = $.str.optional().nullable().pipe(isValidCw).get(params.cw);
 	if (cwErr) return rej('invalid cw');
 
 	// Get 'viaMobile' parameter
-	const [viaMobile = false, viaMobileErr] = $(params.viaMobile).optional.boolean().get();
+	const [viaMobile = false, viaMobileErr] = $.bool.optional().get(params.viaMobile);
 	if (viaMobileErr) return rej('invalid viaMobile');
 
 	// Get 'tags' parameter
-	const [tags = [], tagsErr] = $(params.tags).optional.array($().string().range(1, 32)).unique().get();
+	const [tags = [], tagsErr] = $.arr($.str.optional().range(1, 32)).unique().get(params.tags);
 	if (tagsErr) return rej('invalid tags');
 
 	// Get 'geo' parameter
-	const [geo, geoErr] = $(params.geo).optional.nullable.object(true)
-		.have('coordinates', $().array().length(2)
-			.item(0, $().number().range(-180, 180))
-			.item(1, $().number().range(-90, 90)))
-		.have('altitude', $().nullable.number())
-		.have('accuracy', $().nullable.number())
-		.have('altitudeAccuracy', $().nullable.number())
-		.have('heading', $().nullable.number().range(0, 360))
-		.have('speed', $().nullable.number())
-		.get();
+	const [geo, geoErr] = $.obj.optional().nullable().strict()
+		.have('coordinates', $.arr().length(2)
+			.item(0, $.num.range(-180, 180))
+			.item(1, $.num.range(-90, 90)))
+		.have('altitude', $.num.nullable())
+		.have('accuracy', $.num.nullable())
+		.have('altitudeAccuracy', $.num.nullable())
+		.have('heading', $.num.nullable().range(0, 360))
+		.have('speed', $.num.nullable())
+		.get(params.geo);
 	if (geoErr) return rej('invalid geo');
 
 	// Get 'mediaIds' parameter
-	const [mediaIds, mediaIdsErr] = $(params.mediaIds).optional.array($().type(ID)).unique().range(1, 4).get();
+	const [mediaIds, mediaIdsErr] = $.arr($.type(ID)).optional().unique().range(1, 4).get(params.mediaIds);
 	if (mediaIdsErr) return rej('invalid mediaIds');
 
 	let files = [];
@@ -85,7 +85,7 @@ module.exports = (params, user: ILocalUser, app: IApp) => new Promise(async (res
 	}
 
 	// Get 'renoteId' parameter
-	const [renoteId, renoteIdErr] = $(params.renoteId).optional.type(ID).get();
+	const [renoteId, renoteIdErr] = $.type(ID).optional().get(params.renoteId);
 	if (renoteIdErr) return rej('invalid renoteId');
 
 	let renote: INote = null;
@@ -106,7 +106,7 @@ module.exports = (params, user: ILocalUser, app: IApp) => new Promise(async (res
 	}
 
 	// Get 'replyId' parameter
-	const [replyId, replyIdErr] = $(params.replyId).optional.type(ID).get();
+	const [replyId, replyIdErr] = $.type(ID).optional().get(params.replyId);
 	if (replyIdErr) return rej('invalid replyId');
 
 	let reply: INote = null;
@@ -127,7 +127,7 @@ module.exports = (params, user: ILocalUser, app: IApp) => new Promise(async (res
 	}
 
 	// Get 'channelId' parameter
-	const [channelId, channelIdErr] = $(params.channelId).optional.type(ID).get();
+	const [channelId, channelIdErr] = $.type(ID).optional().get(params.channelId);
 	if (channelIdErr) return rej('invalid channelId');
 
 	let channel: IChannel = null;
@@ -168,12 +168,12 @@ module.exports = (params, user: ILocalUser, app: IApp) => new Promise(async (res
 	}
 
 	// Get 'poll' parameter
-	const [poll, pollErr] = $(params.poll).optional.object(true)
-		.have('choices', $().array($().string())
+	const [poll, pollErr] = $.obj.optional().strict()
+		.have('choices', $.arr($.str)
 			.unique()
 			.range(2, 10)
 			.each(c => c.length > 0 && c.length < 50))
-		.get();
+		.get(params.poll);
 	if (pollErr) return rej('invalid poll');
 
 	if (poll) {
diff --git a/src/server/api/endpoints/notes/favorites/create.ts b/src/server/api/endpoints/notes/favorites/create.ts
index e6396b85ce..6832b52f75 100644
--- a/src/server/api/endpoints/notes/favorites/create.ts
+++ b/src/server/api/endpoints/notes/favorites/create.ts
@@ -10,7 +10,7 @@ import Note from '../../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
+	const [noteId, noteIdErr] = $.type(ID).get(params.noteId);
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get favoritee
diff --git a/src/server/api/endpoints/notes/favorites/delete.ts b/src/server/api/endpoints/notes/favorites/delete.ts
index f1de424725..07112dae15 100644
--- a/src/server/api/endpoints/notes/favorites/delete.ts
+++ b/src/server/api/endpoints/notes/favorites/delete.ts
@@ -10,7 +10,7 @@ import Note from '../../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
+	const [noteId, noteIdErr] = $.type(ID).get(params.noteId);
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get favoritee
diff --git a/src/server/api/endpoints/notes/global-timeline.ts b/src/server/api/endpoints/notes/global-timeline.ts
index 212345aac0..d22a1763de 100644
--- a/src/server/api/endpoints/notes/global-timeline.ts
+++ b/src/server/api/endpoints/notes/global-timeline.ts
@@ -11,23 +11,23 @@ import { pack } from '../../../../models/note';
  */
 module.exports = async (params, user, app) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) throw 'invalid limit param';
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) throw 'invalid sinceId param';
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) throw 'invalid untilId param';
 
 	// Get 'sinceDate' parameter
-	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().get();
+	const [sinceDate, sinceDateErr] = $.num.optional().get(params.sinceDate);
 	if (sinceDateErr) throw 'invalid sinceDate param';
 
 	// Get 'untilDate' parameter
-	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().get();
+	const [untilDate, untilDateErr] = $.num.optional().get(params.untilDate);
 	if (untilDateErr) throw 'invalid untilDate param';
 
 	// Check if only one of sinceId, untilId, sinceDate, untilDate specified
diff --git a/src/server/api/endpoints/notes/local-timeline.ts b/src/server/api/endpoints/notes/local-timeline.ts
index 12dd2d5a85..e7ebe5d960 100644
--- a/src/server/api/endpoints/notes/local-timeline.ts
+++ b/src/server/api/endpoints/notes/local-timeline.ts
@@ -11,23 +11,23 @@ import { pack } from '../../../../models/note';
  */
 module.exports = async (params, user, app) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) throw 'invalid limit param';
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) throw 'invalid sinceId param';
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) throw 'invalid untilId param';
 
 	// Get 'sinceDate' parameter
-	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().get();
+	const [sinceDate, sinceDateErr] = $.num.optional().get(params.sinceDate);
 	if (sinceDateErr) throw 'invalid sinceDate param';
 
 	// Get 'untilDate' parameter
-	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().get();
+	const [untilDate, untilDateErr] = $.num.optional().get(params.untilDate);
 	if (untilDateErr) throw 'invalid untilDate param';
 
 	// Check if only one of sinceId, untilId, sinceDate, untilDate specified
diff --git a/src/server/api/endpoints/notes/mentions.ts b/src/server/api/endpoints/notes/mentions.ts
index db7c630897..163a6b4866 100644
--- a/src/server/api/endpoints/notes/mentions.ts
+++ b/src/server/api/endpoints/notes/mentions.ts
@@ -16,19 +16,19 @@ import { pack } from '../../../../models/note';
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'following' parameter
 	const [following = false, followingError] =
-		$(params.following).optional.boolean().get();
+		$.bool.optional().get(params.following);
 	if (followingError) return rej('invalid following param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/notes/polls/recommendation.ts b/src/server/api/endpoints/notes/polls/recommendation.ts
index 1994c5ce7a..a272378d19 100644
--- a/src/server/api/endpoints/notes/polls/recommendation.ts
+++ b/src/server/api/endpoints/notes/polls/recommendation.ts
@@ -10,11 +10,11 @@ import Note, { pack } from '../../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
+	const [offset = 0, offsetErr] = $.num.optional().min(0).get(params.offset);
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get votes
diff --git a/src/server/api/endpoints/notes/polls/vote.ts b/src/server/api/endpoints/notes/polls/vote.ts
index 1915e0c79b..f8f4515308 100644
--- a/src/server/api/endpoints/notes/polls/vote.ts
+++ b/src/server/api/endpoints/notes/polls/vote.ts
@@ -14,7 +14,7 @@ import notify from '../../../../../publishers/notify';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
+	const [noteId, noteIdErr] = $.type(ID).get(params.noteId);
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get votee
@@ -32,9 +32,9 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 
 	// Get 'choice' parameter
 	const [choice, choiceError] =
-		$(params.choice).number()
+		$.num
 			.pipe(c => note.poll.choices.some(x => x.id == c))
-			.get();
+			.get(params.choice);
 	if (choiceError) return rej('invalid choice param');
 
 	// if already voted
diff --git a/src/server/api/endpoints/notes/reactions.ts b/src/server/api/endpoints/notes/reactions.ts
index 75ed580de2..4ad952a7a1 100644
--- a/src/server/api/endpoints/notes/reactions.ts
+++ b/src/server/api/endpoints/notes/reactions.ts
@@ -14,19 +14,19 @@ import Reaction, { pack } from '../../../../models/note-reaction';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
+	const [noteId, noteIdErr] = $.type(ID).get(params.noteId);
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
+	const [offset = 0, offsetErr] = $.num.optional().min(0).get(params.offset);
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get 'sort' parameter
-	const [sort = 'desc', sortError] = $(params.sort).optional.string().or('desc asc').get();
+	const [sort = 'desc', sortError] = $.str.optional().or('desc asc').get(params.sort);
 	if (sortError) return rej('invalid sort param');
 
 	// Lookup note
diff --git a/src/server/api/endpoints/notes/reactions/create.ts b/src/server/api/endpoints/notes/reactions/create.ts
index 9dc1b3c82a..21757cb427 100644
--- a/src/server/api/endpoints/notes/reactions/create.ts
+++ b/src/server/api/endpoints/notes/reactions/create.ts
@@ -11,11 +11,11 @@ import { validateReaction } from '../../../../../models/note-reaction';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
+	const [noteId, noteIdErr] = $.type(ID).get(params.noteId);
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get 'reaction' parameter
-	const [reaction, reactionErr] = $(params.reaction).string().pipe(validateReaction.ok).get();
+	const [reaction, reactionErr] = $.str.pipe(validateReaction.ok).get(params.reaction);
 	if (reactionErr) return rej('invalid reaction param');
 
 	// Fetch reactee
diff --git a/src/server/api/endpoints/notes/reactions/delete.ts b/src/server/api/endpoints/notes/reactions/delete.ts
index 6bd5edef42..afb8629112 100644
--- a/src/server/api/endpoints/notes/reactions/delete.ts
+++ b/src/server/api/endpoints/notes/reactions/delete.ts
@@ -10,7 +10,7 @@ import Note from '../../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
+	const [noteId, noteIdErr] = $.type(ID).get(params.noteId);
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Fetch unreactee
diff --git a/src/server/api/endpoints/notes/replies.ts b/src/server/api/endpoints/notes/replies.ts
index 47c9ae501f..11d221d8f7 100644
--- a/src/server/api/endpoints/notes/replies.ts
+++ b/src/server/api/endpoints/notes/replies.ts
@@ -13,19 +13,19 @@ import Note, { pack } from '../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
+	const [noteId, noteIdErr] = $.type(ID).get(params.noteId);
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
+	const [offset = 0, offsetErr] = $.num.optional().min(0).get(params.offset);
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get 'sort' parameter
-	const [sort = 'desc', sortError] = $(params.sort).optional.string().or('desc asc').get();
+	const [sort = 'desc', sortError] = $.str.optional().or('desc asc').get(params.sort);
 	if (sortError) return rej('invalid sort param');
 
 	// Lookup note
diff --git a/src/server/api/endpoints/notes/reposts.ts b/src/server/api/endpoints/notes/reposts.ts
index b388ee599f..3098211b61 100644
--- a/src/server/api/endpoints/notes/reposts.ts
+++ b/src/server/api/endpoints/notes/reposts.ts
@@ -13,19 +13,19 @@ import Note, { pack } from '../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
+	const [noteId, noteIdErr] = $.type(ID).get(params.noteId);
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/notes/search.ts b/src/server/api/endpoints/notes/search.ts
index 8b3c78145d..9705dcfd6e 100644
--- a/src/server/api/endpoints/notes/search.ts
+++ b/src/server/api/endpoints/notes/search.ts
@@ -18,63 +18,63 @@ import { pack } from '../../../../models/note';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'text' parameter
-	const [text, textError] = $(params.text).optional.string().get();
+	const [text, textError] = $.str.optional().get(params.text);
 	if (textError) return rej('invalid text param');
 
 	// Get 'includeUserIds' parameter
-	const [includeUserIds = [], includeUserIdsErr] = $(params.includeUserIds).optional.array($().type(ID)).get();
+	const [includeUserIds = [], includeUserIdsErr] = $.arr($.type(ID)).optional().get(params.includeUserIds);
 	if (includeUserIdsErr) return rej('invalid includeUserIds param');
 
 	// Get 'excludeUserIds' parameter
-	const [excludeUserIds = [], excludeUserIdsErr] = $(params.excludeUserIds).optional.array($().type(ID)).get();
+	const [excludeUserIds = [], excludeUserIdsErr] = $.arr($.type(ID)).optional().get(params.excludeUserIds);
 	if (excludeUserIdsErr) return rej('invalid excludeUserIds param');
 
 	// Get 'includeUserUsernames' parameter
-	const [includeUserUsernames = [], includeUserUsernamesErr] = $(params.includeUserUsernames).optional.array($().string()).get();
+	const [includeUserUsernames = [], includeUserUsernamesErr] = $.arr($.str).optional().get(params.includeUserUsernames);
 	if (includeUserUsernamesErr) return rej('invalid includeUserUsernames param');
 
 	// Get 'excludeUserUsernames' parameter
-	const [excludeUserUsernames = [], excludeUserUsernamesErr] = $(params.excludeUserUsernames).optional.array($().string()).get();
+	const [excludeUserUsernames = [], excludeUserUsernamesErr] = $.arr($.str).optional().get(params.excludeUserUsernames);
 	if (excludeUserUsernamesErr) return rej('invalid excludeUserUsernames param');
 
 	// Get 'following' parameter
-	const [following = null, followingErr] = $(params.following).optional.nullable.boolean().get();
+	const [following = null, followingErr] = $.bool.optional().nullable().get(params.following);
 	if (followingErr) return rej('invalid following param');
 
 	// Get 'mute' parameter
-	const [mute = 'mute_all', muteErr] = $(params.mute).optional.string().get();
+	const [mute = 'mute_all', muteErr] = $.str.optional().get(params.mute);
 	if (muteErr) return rej('invalid mute param');
 
 	// Get 'reply' parameter
-	const [reply = null, replyErr] = $(params.reply).optional.nullable.boolean().get();
+	const [reply = null, replyErr] = $.bool.optional().nullable().get(params.reply);
 	if (replyErr) return rej('invalid reply param');
 
 	// Get 'renote' parameter
-	const [renote = null, renoteErr] = $(params.renote).optional.nullable.boolean().get();
+	const [renote = null, renoteErr] = $.bool.optional().nullable().get(params.renote);
 	if (renoteErr) return rej('invalid renote param');
 
 	// Get 'media' parameter
-	const [media = null, mediaErr] = $(params.media).optional.nullable.boolean().get();
+	const [media = null, mediaErr] = $.bool.optional().nullable().get(params.media);
 	if (mediaErr) return rej('invalid media param');
 
 	// Get 'poll' parameter
-	const [poll = null, pollErr] = $(params.poll).optional.nullable.boolean().get();
+	const [poll = null, pollErr] = $.bool.optional().nullable().get(params.poll);
 	if (pollErr) return rej('invalid poll param');
 
 	// Get 'sinceDate' parameter
-	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().get();
+	const [sinceDate, sinceDateErr] = $.num.optional().get(params.sinceDate);
 	if (sinceDateErr) throw 'invalid sinceDate param';
 
 	// Get 'untilDate' parameter
-	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().get();
+	const [untilDate, untilDateErr] = $.num.optional().get(params.untilDate);
 	if (untilDateErr) throw 'invalid untilDate param';
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
+	const [offset = 0, offsetErr] = $.num.optional().min(0).get(params.offset);
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 30).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 30).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	let includeUsers = includeUserIds;
diff --git a/src/server/api/endpoints/notes/show.ts b/src/server/api/endpoints/notes/show.ts
index 2a4f8f97e1..78dc55a703 100644
--- a/src/server/api/endpoints/notes/show.ts
+++ b/src/server/api/endpoints/notes/show.ts
@@ -13,7 +13,7 @@ import Note, { pack } from '../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'noteId' parameter
-	const [noteId, noteIdErr] = $(params.noteId).type(ID).get();
+	const [noteId, noteIdErr] = $.type(ID).get(params.noteId);
 	if (noteIdErr) return rej('invalid noteId param');
 
 	// Get note
diff --git a/src/server/api/endpoints/notes/timeline.ts b/src/server/api/endpoints/notes/timeline.ts
index 222f0b795f..78786d4a16 100644
--- a/src/server/api/endpoints/notes/timeline.ts
+++ b/src/server/api/endpoints/notes/timeline.ts
@@ -13,23 +13,23 @@ import { pack } from '../../../../models/note';
  */
 module.exports = async (params, user, app) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) throw 'invalid limit param';
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) throw 'invalid sinceId param';
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) throw 'invalid untilId param';
 
 	// Get 'sinceDate' parameter
-	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().get();
+	const [sinceDate, sinceDateErr] = $.num.optional().get(params.sinceDate);
 	if (sinceDateErr) throw 'invalid sinceDate param';
 
 	// Get 'untilDate' parameter
-	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().get();
+	const [untilDate, untilDateErr] = $.num.optional().get(params.untilDate);
 	if (untilDateErr) throw 'invalid untilDate param';
 
 	// Check if only one of sinceId, untilId, sinceDate, untilDate specified
@@ -38,11 +38,11 @@ module.exports = async (params, user, app) => {
 	}
 
 	// Get 'includeMyRenotes' parameter
-	const [includeMyRenotes = true, includeMyRenotesErr] = $(params.includeMyRenotes).optional.boolean().get();
+	const [includeMyRenotes = true, includeMyRenotesErr] = $.bool.optional().get(params.includeMyRenotes);
 	if (includeMyRenotesErr) throw 'invalid includeMyRenotes param';
 
 	// Get 'includeRenotedMyNotes' parameter
-	const [includeRenotedMyNotes = true, includeRenotedMyNotesErr] = $(params.includeRenotedMyNotes).optional.boolean().get();
+	const [includeRenotedMyNotes = true, includeRenotedMyNotesErr] = $.bool.optional().get(params.includeRenotedMyNotes);
 	if (includeRenotedMyNotesErr) throw 'invalid includeRenotedMyNotes param';
 
 	const [followings, watchingChannelIds, mutedUserIds] = await Promise.all([
diff --git a/src/server/api/endpoints/notes/trend.ts b/src/server/api/endpoints/notes/trend.ts
index 915d45ce91..9cb3debe63 100644
--- a/src/server/api/endpoints/notes/trend.ts
+++ b/src/server/api/endpoints/notes/trend.ts
@@ -14,27 +14,27 @@ import Note, { pack } from '../../../../models/note';
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
+	const [offset = 0, offsetErr] = $.num.optional().min(0).get(params.offset);
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get 'reply' parameter
-	const [reply, replyErr] = $(params.reply).optional.boolean().get();
+	const [reply, replyErr] = $.bool.optional().get(params.reply);
 	if (replyErr) return rej('invalid reply param');
 
 	// Get 'renote' parameter
-	const [renote, renoteErr] = $(params.renote).optional.boolean().get();
+	const [renote, renoteErr] = $.bool.optional().get(params.renote);
 	if (renoteErr) return rej('invalid renote param');
 
 	// Get 'media' parameter
-	const [media, mediaErr] = $(params.media).optional.boolean().get();
+	const [media, mediaErr] = $.bool.optional().get(params.media);
 	if (mediaErr) return rej('invalid media param');
 
 	// Get 'poll' parameter
-	const [poll, pollErr] = $(params.poll).optional.boolean().get();
+	const [poll, pollErr] = $.bool.optional().get(params.poll);
 	if (pollErr) return rej('invalid poll param');
 
 	const query = {
diff --git a/src/server/api/endpoints/notes/user-list-timeline.ts b/src/server/api/endpoints/notes/user-list-timeline.ts
index 8d4eb590cb..9f8397d679 100644
--- a/src/server/api/endpoints/notes/user-list-timeline.ts
+++ b/src/server/api/endpoints/notes/user-list-timeline.ts
@@ -12,23 +12,23 @@ import UserList from '../../../../models/user-list';
  */
 module.exports = async (params, user, app) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) throw 'invalid limit param';
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) throw 'invalid sinceId param';
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) throw 'invalid untilId param';
 
 	// Get 'sinceDate' parameter
-	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().get();
+	const [sinceDate, sinceDateErr] = $.num.optional().get(params.sinceDate);
 	if (sinceDateErr) throw 'invalid sinceDate param';
 
 	// Get 'untilDate' parameter
-	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().get();
+	const [untilDate, untilDateErr] = $.num.optional().get(params.untilDate);
 	if (untilDateErr) throw 'invalid untilDate param';
 
 	// Check if only one of sinceId, untilId, sinceDate, untilDate specified
@@ -37,15 +37,15 @@ module.exports = async (params, user, app) => {
 	}
 
 	// Get 'includeMyRenotes' parameter
-	const [includeMyRenotes = true, includeMyRenotesErr] = $(params.includeMyRenotes).optional.boolean().get();
+	const [includeMyRenotes = true, includeMyRenotesErr] = $.bool.optional().get(params.includeMyRenotes);
 	if (includeMyRenotesErr) throw 'invalid includeMyRenotes param';
 
 	// Get 'includeRenotedMyNotes' parameter
-	const [includeRenotedMyNotes = true, includeRenotedMyNotesErr] = $(params.includeRenotedMyNotes).optional.boolean().get();
+	const [includeRenotedMyNotes = true, includeRenotedMyNotesErr] = $.bool.optional().get(params.includeRenotedMyNotes);
 	if (includeRenotedMyNotesErr) throw 'invalid includeRenotedMyNotes param';
 
 	// Get 'listId' parameter
-	const [listId, listIdErr] = $(params.listId).type(ID).get();
+	const [listId, listIdErr] = $.type(ID).get(params.listId);
 	if (listIdErr) throw 'invalid listId param';
 
 	const [list, mutedUserIds] = await Promise.all([
diff --git a/src/server/api/endpoints/othello/games.ts b/src/server/api/endpoints/othello/games.ts
index 05bff180c1..2320a34b04 100644
--- a/src/server/api/endpoints/othello/games.ts
+++ b/src/server/api/endpoints/othello/games.ts
@@ -3,19 +3,19 @@ import OthelloGame, { pack } from '../../../../models/othello-game';
 
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'my' parameter
-	const [my = false, myErr] = $(params.my).optional.boolean().get();
+	const [my = false, myErr] = $.bool.optional().get(params.my);
 	if (myErr) return rej('invalid my param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Check if both of sinceId and untilId is specified
diff --git a/src/server/api/endpoints/othello/games/show.ts b/src/server/api/endpoints/othello/games/show.ts
index 991bb9622e..6b2f5ce137 100644
--- a/src/server/api/endpoints/othello/games/show.ts
+++ b/src/server/api/endpoints/othello/games/show.ts
@@ -4,7 +4,7 @@ import Othello from '../../../../../othello/core';
 
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'gameId' parameter
-	const [gameId, gameIdErr] = $(params.gameId).type(ID).get();
+	const [gameId, gameIdErr] = $.type(ID).get(params.gameId);
 	if (gameIdErr) return rej('invalid gameId param');
 
 	const game = await OthelloGame.findOne({ _id: gameId });
diff --git a/src/server/api/endpoints/othello/match.ts b/src/server/api/endpoints/othello/match.ts
index 9769c94da3..e70e579755 100644
--- a/src/server/api/endpoints/othello/match.ts
+++ b/src/server/api/endpoints/othello/match.ts
@@ -7,7 +7,7 @@ import { eighteight } from '../../../../othello/maps';
 
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [childId, childIdErr] = $(params.userId).type(ID).get();
+	const [childId, childIdErr] = $.type(ID).get(params.userId);
 	if (childIdErr) return rej('invalid userId param');
 
 	// Myself
diff --git a/src/server/api/endpoints/sw/register.ts b/src/server/api/endpoints/sw/register.ts
index 222e6edc8e..b22a8b08ef 100644
--- a/src/server/api/endpoints/sw/register.ts
+++ b/src/server/api/endpoints/sw/register.ts
@@ -9,15 +9,15 @@ import Subscription from '../../../../models/sw-subscription';
  */
 module.exports = async (params, user, app) => new Promise(async (res, rej) => {
 	// Get 'endpoint' parameter
-	const [endpoint, endpointErr] = $(params.endpoint).string().get();
+	const [endpoint, endpointErr] = $.str.get(params.endpoint);
 	if (endpointErr) return rej('invalid endpoint param');
 
 	// Get 'auth' parameter
-	const [auth, authErr] = $(params.auth).string().get();
+	const [auth, authErr] = $.str.get(params.auth);
 	if (authErr) return rej('invalid auth param');
 
 	// Get 'publickey' parameter
-	const [publickey, publickeyErr] = $(params.publickey).string().get();
+	const [publickey, publickeyErr] = $.str.get(params.publickey);
 	if (publickeyErr) return rej('invalid publickey param');
 
 	// if already subscribed
diff --git a/src/server/api/endpoints/username/available.ts b/src/server/api/endpoints/username/available.ts
index 65b297683d..b11bec4e58 100644
--- a/src/server/api/endpoints/username/available.ts
+++ b/src/server/api/endpoints/username/available.ts
@@ -13,7 +13,7 @@ import { validateUsername } from '../../../../models/user';
  */
 module.exports = async (params) => new Promise(async (res, rej) => {
 	// Get 'username' parameter
-	const [username, usernameError] = $(params.username).string().pipe(validateUsername).get();
+	const [username, usernameError] = $.str.pipe(validateUsername).get(params.username);
 	if (usernameError) return rej('invalid username param');
 
 	// Get exist
diff --git a/src/server/api/endpoints/users.ts b/src/server/api/endpoints/users.ts
index 2f7d00fa84..eb581cb7e6 100644
--- a/src/server/api/endpoints/users.ts
+++ b/src/server/api/endpoints/users.ts
@@ -9,15 +9,15 @@ import User, { pack } from '../../../models/user';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
+	const [offset = 0, offsetErr] = $.num.optional().min(0).get(params.offset);
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get 'sort' parameter
-	const [sort, sortError] = $(params.sort).optional.string().or('+follower|-follower').get();
+	const [sort, sortError] = $.str.optional().or('+follower|-follower').get(params.sort);
 	if (sortError) return rej('invalid sort param');
 
 	// Construct query
diff --git a/src/server/api/endpoints/users/followers.ts b/src/server/api/endpoints/users/followers.ts
index 7892f633d4..810cd7341b 100644
--- a/src/server/api/endpoints/users/followers.ts
+++ b/src/server/api/endpoints/users/followers.ts
@@ -12,19 +12,19 @@ import { getFriendIds } from '../../common/get-friends';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).get();
+	const [userId, userIdErr] = $.type(ID).get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// Get 'iknow' parameter
-	const [iknow = false, iknowErr] = $(params.iknow).optional.boolean().get();
+	const [iknow = false, iknowErr] = $.bool.optional().get(params.iknow);
 	if (iknowErr) return rej('invalid iknow param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'cursor' parameter
-	const [cursor = null, cursorErr] = $(params.cursor).optional.type(ID).get();
+	const [cursor = null, cursorErr] = $.type(ID).optional().get(params.cursor);
 	if (cursorErr) return rej('invalid cursor param');
 
 	// Lookup user
diff --git a/src/server/api/endpoints/users/following.ts b/src/server/api/endpoints/users/following.ts
index e584e61f9c..3373b9d632 100644
--- a/src/server/api/endpoints/users/following.ts
+++ b/src/server/api/endpoints/users/following.ts
@@ -16,19 +16,19 @@ import { getFriendIds } from '../../common/get-friends';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).get();
+	const [userId, userIdErr] = $.type(ID).get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// Get 'iknow' parameter
-	const [iknow = false, iknowErr] = $(params.iknow).optional.boolean().get();
+	const [iknow = false, iknowErr] = $.bool.optional().get(params.iknow);
 	if (iknowErr) return rej('invalid iknow param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'cursor' parameter
-	const [cursor = null, cursorErr] = $(params.cursor).optional.type(ID).get();
+	const [cursor = null, cursorErr] = $.type(ID).optional().get(params.cursor);
 	if (cursorErr) return rej('invalid cursor param');
 
 	// Lookup user
diff --git a/src/server/api/endpoints/users/get_frequently_replied_users.ts b/src/server/api/endpoints/users/get_frequently_replied_users.ts
index 034684260c..64d737a06b 100644
--- a/src/server/api/endpoints/users/get_frequently_replied_users.ts
+++ b/src/server/api/endpoints/users/get_frequently_replied_users.ts
@@ -7,11 +7,11 @@ import User, { pack } from '../../../../models/user';
 
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).get();
+	const [userId, userIdErr] = $.type(ID).get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Lookup user
diff --git a/src/server/api/endpoints/users/lists/create.ts b/src/server/api/endpoints/users/lists/create.ts
index 79a680c736..100a78b872 100644
--- a/src/server/api/endpoints/users/lists/create.ts
+++ b/src/server/api/endpoints/users/lists/create.ts
@@ -9,7 +9,7 @@ import UserList, { pack } from '../../../../../models/user-list';
  */
 module.exports = async (params, user) => new Promise(async (res, rej) => {
 	// Get 'title' parameter
-	const [title, titleErr] = $(params.title).string().range(1, 100).get();
+	const [title, titleErr] = $.str.range(1, 100).get(params.title);
 	if (titleErr) return rej('invalid title param');
 
 	// insert
diff --git a/src/server/api/endpoints/users/lists/push.ts b/src/server/api/endpoints/users/lists/push.ts
index ceb5692c81..da5a9a134c 100644
--- a/src/server/api/endpoints/users/lists/push.ts
+++ b/src/server/api/endpoints/users/lists/push.ts
@@ -11,7 +11,7 @@ import { deliver } from '../../../../../queue';
  */
 module.exports = async (params, me) => new Promise(async (res, rej) => {
 	// Get 'listId' parameter
-	const [listId, listIdErr] = $(params.listId).type(ID).get();
+	const [listId, listIdErr] = $.type(ID).get(params.listId);
 	if (listIdErr) return rej('invalid listId param');
 
 	// Fetch the list
@@ -25,7 +25,7 @@ module.exports = async (params, me) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).type(ID).get();
+	const [userId, userIdErr] = $.type(ID).get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// Fetch the user
diff --git a/src/server/api/endpoints/users/lists/show.ts b/src/server/api/endpoints/users/lists/show.ts
index 54e1df7b2f..16cb3382fd 100644
--- a/src/server/api/endpoints/users/lists/show.ts
+++ b/src/server/api/endpoints/users/lists/show.ts
@@ -6,7 +6,7 @@ import UserList, { pack } from '../../../../../models/user-list';
  */
 module.exports = async (params, me) => new Promise(async (res, rej) => {
 	// Get 'listId' parameter
-	const [listId, listIdErr] = $(params.listId).type(ID).get();
+	const [listId, listIdErr] = $.type(ID).get(params.listId);
 	if (listIdErr) return rej('invalid listId param');
 
 	// Fetch the list
diff --git a/src/server/api/endpoints/users/notes.ts b/src/server/api/endpoints/users/notes.ts
index 67b14b36a3..061c363d0f 100644
--- a/src/server/api/endpoints/users/notes.ts
+++ b/src/server/api/endpoints/users/notes.ts
@@ -11,11 +11,11 @@ import User from '../../../../models/user';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).optional.type(ID).get();
+	const [userId, userIdErr] = $.type(ID).optional().get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// Get 'username' parameter
-	const [username, usernameErr] = $(params.username).optional.string().get();
+	const [username, usernameErr] = $.str.optional().get(params.username);
 	if (usernameErr) return rej('invalid username param');
 
 	if (userId === undefined && username === undefined) {
@@ -23,7 +23,7 @@ module.exports = (params, me) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'host' parameter
-	const [host, hostErr] = $(params.host).optional.string().get();
+	const [host, hostErr] = $.str.optional().get(params.host);
 	if (hostErr) return rej('invalid host param');
 
 	if (userId === undefined && host === undefined) {
@@ -31,31 +31,31 @@ module.exports = (params, me) => new Promise(async (res, rej) => {
 	}
 
 	// Get 'includeReplies' parameter
-	const [includeReplies = true, includeRepliesErr] = $(params.includeReplies).optional.boolean().get();
+	const [includeReplies = true, includeRepliesErr] = $.bool.optional().get(params.includeReplies);
 	if (includeRepliesErr) return rej('invalid includeReplies param');
 
 	// Get 'withMedia' parameter
-	const [withMedia = false, withMediaErr] = $(params.withMedia).optional.boolean().get();
+	const [withMedia = false, withMediaErr] = $.bool.optional().get(params.withMedia);
 	if (withMediaErr) return rej('invalid withMedia param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'sinceId' parameter
-	const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
+	const [sinceId, sinceIdErr] = $.type(ID).optional().get(params.sinceId);
 	if (sinceIdErr) return rej('invalid sinceId param');
 
 	// Get 'untilId' parameter
-	const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
+	const [untilId, untilIdErr] = $.type(ID).optional().get(params.untilId);
 	if (untilIdErr) return rej('invalid untilId param');
 
 	// Get 'sinceDate' parameter
-	const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().get();
+	const [sinceDate, sinceDateErr] = $.num.optional().get(params.sinceDate);
 	if (sinceDateErr) throw 'invalid sinceDate param';
 
 	// Get 'untilDate' parameter
-	const [untilDate, untilDateErr] = $(params.untilDate).optional.number().get();
+	const [untilDate, untilDateErr] = $.num.optional().get(params.untilDate);
 	if (untilDateErr) throw 'invalid untilDate param';
 
 	// Check if only one of sinceId, untilId, sinceDate, untilDate specified
diff --git a/src/server/api/endpoints/users/recommendation.ts b/src/server/api/endpoints/users/recommendation.ts
index f48ac7cb28..620ae17ca2 100644
--- a/src/server/api/endpoints/users/recommendation.ts
+++ b/src/server/api/endpoints/users/recommendation.ts
@@ -16,11 +16,11 @@ import Mute from '../../../../models/mute';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
+	const [offset = 0, offsetErr] = $.num.optional().min(0).get(params.offset);
 	if (offsetErr) return rej('invalid offset param');
 
 	// ID list of the user itself and other users who the user follows
diff --git a/src/server/api/endpoints/users/search.ts b/src/server/api/endpoints/users/search.ts
index 48630c6fd3..cfbdc337bf 100644
--- a/src/server/api/endpoints/users/search.ts
+++ b/src/server/api/endpoints/users/search.ts
@@ -16,15 +16,15 @@ const escapeRegexp = require('escape-regexp');
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'query' parameter
-	const [query, queryError] = $(params.query).string().pipe(x => x != '').get();
+	const [query, queryError] = $.str.pipe(x => x != '').get(params.query);
 	if (queryError) return rej('invalid query param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
+	const [offset = 0, offsetErr] = $.num.optional().min(0).get(params.offset);
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get 'max' parameter
-	const [max = 10, maxErr] = $(params.max).optional.number().range(1, 30).get();
+	const [max = 10, maxErr] = $.num.optional().range(1, 30).get(params.max);
 	if (maxErr) return rej('invalid max param');
 
 	// If Elasticsearch is available, search by $
diff --git a/src/server/api/endpoints/users/search_by_username.ts b/src/server/api/endpoints/users/search_by_username.ts
index da38347956..5927d00faf 100644
--- a/src/server/api/endpoints/users/search_by_username.ts
+++ b/src/server/api/endpoints/users/search_by_username.ts
@@ -9,15 +9,15 @@ import User, { pack } from '../../../../models/user';
  */
 module.exports = (params, me) => new Promise(async (res, rej) => {
 	// Get 'query' parameter
-	const [query, queryError] = $(params.query).string().get();
+	const [query, queryError] = $.str.get(params.query);
 	if (queryError) return rej('invalid query param');
 
 	// Get 'offset' parameter
-	const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).get();
+	const [offset = 0, offsetErr] = $.num.optional().min(0).get(params.offset);
 	if (offsetErr) return rej('invalid offset param');
 
 	// Get 'limit' parameter
-	const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
+	const [limit = 10, limitErr] = $.num.optional().range(1, 100).get(params.limit);
 	if (limitErr) return rej('invalid limit param');
 
 	const users = await User
diff --git a/src/server/api/endpoints/users/show.ts b/src/server/api/endpoints/users/show.ts
index 89a8684538..b8c6ff25c4 100644
--- a/src/server/api/endpoints/users/show.ts
+++ b/src/server/api/endpoints/users/show.ts
@@ -14,19 +14,19 @@ module.exports = (params, me) => new Promise(async (res, rej) => {
 	let user;
 
 	// Get 'userId' parameter
-	const [userId, userIdErr] = $(params.userId).optional.type(ID).get();
+	const [userId, userIdErr] = $.type(ID).optional().get(params.userId);
 	if (userIdErr) return rej('invalid userId param');
 
 	// Get 'userIds' parameter
-	const [userIds, userIdsErr] = $(params.userIds).optional.array($().type(ID)).get();
+	const [userIds, userIdsErr] = $.arr($.type(ID)).optional().get(params.userIds);
 	if (userIdsErr) return rej('invalid userIds param');
 
 	// Get 'username' parameter
-	const [username, usernameErr] = $(params.username).optional.string().get();
+	const [username, usernameErr] = $.str.optional().get(params.username);
 	if (usernameErr) return rej('invalid username param');
 
 	// Get 'host' parameter
-	const [host, hostErr] = $(params.host).nullable.optional.string().get();
+	const [host, hostErr] = $.str.optional().nullable().get(params.host);
 	if (hostErr) return rej('invalid host param');
 
 	if (userIds) {
-- 
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