refactor(frontend): `os.ts`周りのリファクタリング (#13186)

* refactor(frontend): `os.ts`周りのリファクタリング

* refactor: apiWithDialogのdataの型付け

* refactor: 不要なas anyを除去

* refactor: 返り値の型を明記、`selectDriveFolder`は`File`のほうに合わせるよう返り値を変更

* refactor: 返り値の型を改善

* refactor: フォームの型を改善

* refactor: 良い感じのimportに修正

* refactor: フォームの返り値の型を改善

* refactor: `popup()`の`props`に`ref`な値を入れるのを許可するように

* fix: `os.input`系と`os.select`の返り値の型がおかしい問題とそれによるバグを修正

* Update CHANGELOG.md

* Update CHANGELOG.md

---------

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

15 files changed, 254 insertions, 249 deletions

diff --git a/packages/frontend/src/account.ts b/packages/frontend/src/account.ts
index e606fe368c..7f20e0b1a2 100644
--- a/packages/frontend/src/account.ts
+++ b/packages/frontend/src/account.ts
@@ -290,7 +290,7 @@ export async function openAccountMenu(opts: {
 			text: i18n.ts.profile,
 			to: `/@${ $i.username }`,
 			avatar: $i,
-		}, { type: 'divider' }, ...(opts.includeCurrentAccount ? [createItem($i)] : []), ...accountItemPromises, {
+		}, { type: 'divider' as const }, ...(opts.includeCurrentAccount ? [createItem($i)] : []), ...accountItemPromises, {
 			type: 'parent' as const,
 			icon: 'ti ti-plus',
 			text: i18n.ts.addAccount,
diff --git a/packages/frontend/src/components/MkDialog.vue b/packages/frontend/src/components/MkDialog.vue
index 4b7584faaa..4577d37c08 100644
--- a/packages/frontend/src/components/MkDialog.vue
+++ b/packages/frontend/src/components/MkDialog.vue
@@ -38,11 +38,6 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<template v-if="select.items">
 				<option v-for="item in select.items" :value="item.value">{{ item.text }}</option>
 			</template>
-			<template v-else>
-				<optgroup v-for="groupedItem in select.groupedItems" :label="groupedItem.label">
-					<option v-for="item in groupedItem.items" :value="item.value">{{ item.text }}</option>
-				</optgroup>
-			</template>
 		</MkSelect>
 		<div v-if="(showOkButton || showCancelButton) && !actions" :class="$style.buttons">
 			<MkButton v-if="showOkButton" data-cy-modal-dialog-ok inline primary rounded :autofocus="!input && !select" :disabled="okButtonDisabledReason" @click="ok">{{ okText ?? ((showCancelButton || input || select) ? i18n.ts.ok : i18n.ts.gotIt) }}</MkButton>
@@ -64,7 +59,7 @@ import MkSelect from '@/components/MkSelect.vue';
 import { i18n } from '@/i18n.js';
 
 type Input = {
-	type: 'text' | 'number' | 'password' | 'email' | 'url' | 'date' | 'time' | 'search' | 'datetime-local';
+	type?: 'text' | 'number' | 'password' | 'email' | 'url' | 'date' | 'time' | 'search' | 'datetime-local';
 	placeholder?: string | null;
 	autocomplete?: string;
 	default: string | number | null;
@@ -74,22 +69,17 @@ type Input = {
 
 type Select = {
 	items: {
-		value: string;
+		value: any;
 		text: string;
 	}[];
-	groupedItems: {
-		label: string;
-		items: {
-			value: string;
-			text: string;
-		}[];
-	}[];
 	default: string | null;
 };
 
+type Result = string | number | true | null;
+
 const props = withDefaults(defineProps<{
 	type?: 'success' | 'error' | 'warning' | 'info' | 'question' | 'waiting';
-	title: string;
+	title?: string;
 	text?: string;
 	input?: Input;
 	select?: Select;
@@ -113,7 +103,7 @@ const props = withDefaults(defineProps<{
 });
 
 const emit = defineEmits<{
-	(ev: 'done', v: { canceled: boolean; result: any }): void;
+	(ev: 'done', v: { canceled: true } | { canceled: false, result: Result }): void;
 	(ev: 'closed'): void;
 }>();
 
@@ -139,8 +129,11 @@ const okButtonDisabledReason = computed<null | 'charactersExceeded' | 'character
 	return null;
 });
 
-function done(canceled: boolean, result?) {
-	emit('done', { canceled, result });
+// overload function を使いたいので lint エラーを無視する
+function done(canceled: true): void;
+function done(canceled: false, result: Result): void; // eslint-disable-line no-redeclare
+function done(canceled: boolean, result?: Result): void { // eslint-disable-line no-redeclare
+	emit('done', { canceled, result } as { canceled: true } | { canceled: false, result: Result });
 	modal.value?.close();
 }
 
diff --git a/packages/frontend/src/components/MkDriveSelectDialog.vue b/packages/frontend/src/components/MkDriveSelectDialog.vue
index 77b5532f79..f1ecc27123 100644
--- a/packages/frontend/src/components/MkDriveSelectDialog.vue
+++ b/packages/frontend/src/components/MkDriveSelectDialog.vue
@@ -39,13 +39,13 @@ withDefaults(defineProps<{
 });
 
 const emit = defineEmits<{
-	(ev: 'done', r?: Misskey.entities.DriveFile[]): void;
+	(ev: 'done', r?: Misskey.entities.DriveFile[] | Misskey.entities.DriveFolder[]): void;
 	(ev: 'closed'): void;
 }>();
 
 const dialog = shallowRef<InstanceType<typeof MkModalWindow>>();
 
-const selected = ref<Misskey.entities.DriveFile[]>([]);
+const selected = ref<Misskey.entities.DriveFile[] | Misskey.entities.DriveFolder[]>([]);
 
 function ok() {
 	emit('done', selected.value);
@@ -57,7 +57,7 @@ function cancel() {
 	dialog.value?.close();
 }
 
-function onChangeSelection(files: Misskey.entities.DriveFile[]) {
-	selected.value = files;
+function onChangeSelection(v: Misskey.entities.DriveFile[] | Misskey.entities.DriveFolder[]) {
+	selected.value = v;
 }
 </script>
diff --git a/packages/frontend/src/components/MkEmojiPickerDialog.vue b/packages/frontend/src/components/MkEmojiPickerDialog.vue
index 59f4b51522..adcea839ee 100644
--- a/packages/frontend/src/components/MkEmojiPickerDialog.vue
+++ b/packages/frontend/src/components/MkEmojiPickerDialog.vue
@@ -56,7 +56,7 @@ const props = withDefaults(defineProps<{
 });
 
 const emit = defineEmits<{
-	(ev: 'done', v: any): void;
+	(ev: 'done', v: string): void;
 	(ev: 'close'): void;
 	(ev: 'closed'): void;
 }>();
@@ -64,7 +64,7 @@ const emit = defineEmits<{
 const modal = shallowRef<InstanceType<typeof MkModal>>();
 const picker = shallowRef<InstanceType<typeof MkEmojiPicker>>();
 
-function chosen(emoji: any) {
+function chosen(emoji: string) {
 	emit('done', emoji);
 	if (props.choseAndClose) {
 		modal.value?.close();
diff --git a/packages/frontend/src/components/MkEmojiPickerWindow.vue b/packages/frontend/src/components/MkEmojiPickerWindow.vue
deleted file mode 100644
index 6952943345..0000000000
--- a/packages/frontend/src/components/MkEmojiPickerWindow.vue
+++ /dev/null
@@ -1,49 +0,0 @@
-<!--
-SPDX-FileCopyrightText: syuilo and misskey-project
-SPDX-License-Identifier: AGPL-3.0-only
--->
-
-<template>
-<MkWindow
-	ref="window"
-	:initialWidth="300"
-	:initialHeight="290"
-	:canResize="true"
-	:mini="true"
-	:front="true"
-	@closed="emit('closed')"
->
-	<MkEmojiPicker :showPinned="showPinned" :asReactionPicker="asReactionPicker" :targetNote="targetNote" asWindow :class="$style.picker" @chosen="chosen"/>
-</MkWindow>
-</template>
-
-<script lang="ts" setup>
-import { } from 'vue';
-import * as Misskey from 'misskey-js';
-import MkWindow from '@/components/MkWindow.vue';
-import MkEmojiPicker from '@/components/MkEmojiPicker.vue';
-
-withDefaults(defineProps<{
-	src?: HTMLElement;
-	showPinned?: boolean;
-	asReactionPicker?: boolean;
-	targetNote?: Misskey.entities.Note
-}>(), {
-	showPinned: true,
-});
-
-const emit = defineEmits<{
-	(ev: 'chosen', v: any): void;
-	(ev: 'closed'): void;
-}>();
-
-function chosen(emoji: any) {
-	emit('chosen', emoji);
-}
-</script>
-
-<style lang="scss" module>
-.picker {
-	height: 100%;
-}
-</style>
diff --git a/packages/frontend/src/components/MkFormDialog.vue b/packages/frontend/src/components/MkFormDialog.vue
index 0d8734799c..deedc5badb 100644
--- a/packages/frontend/src/components/MkFormDialog.vue
+++ b/packages/frontend/src/components/MkFormDialog.vue
@@ -21,37 +21,37 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 	<MkSpacer :marginMin="20" :marginMax="32">
 		<div v-if="Object.keys(form).filter(item => !form[item].hidden).length > 0" class="_gaps_m">
-			<template v-for="item in Object.keys(form).filter(item => !form[item].hidden)">
-				<MkInput v-if="form[item].type === 'number'" v-model="values[item]" type="number" :step="form[item].step || 1">
-					<template #label><span v-text="form[item].label || item"></span><span v-if="form[item].required === false"> ({{ i18n.ts.optional }})</span></template>
-					<template v-if="form[item].description" #caption>{{ form[item].description }}</template>
+			<template v-for="(v, k) in Object.fromEntries(Object.entries(form).filter(([_, v]) => !('hidden' in v) || 'hidden' in v && !v.hidden))">
+				<MkInput v-if="v.type === 'number'" v-model="values[k]" type="number" :step="v.step || 1">
+					<template #label><span v-text="v.label || k"></span><span v-if="v.required === false"> ({{ i18n.ts.optional }})</span></template>
+					<template v-if="v.description" #caption>{{ v.description }}</template>
 				</MkInput>
-				<MkInput v-else-if="form[item].type === 'string' && !form[item].multiline" v-model="values[item]" type="text" :mfmAutocomplete="form[item].treatAsMfm">
-					<template #label><span v-text="form[item].label || item"></span><span v-if="form[item].required === false"> ({{ i18n.ts.optional }})</span></template>
-					<template v-if="form[item].description" #caption>{{ form[item].description }}</template>
+				<MkInput v-else-if="v.type === 'string' && !v.multiline" v-model="values[k]" type="text" :mfmAutocomplete="v.treatAsMfm">
+					<template #label><span v-text="v.label || k"></span><span v-if="v.required === false"> ({{ i18n.ts.optional }})</span></template>
+					<template v-if="v.description" #caption>{{ v.description }}</template>
 				</MkInput>
-				<MkTextarea v-else-if="form[item].type === 'string' && form[item].multiline" v-model="values[item]" :mfmAutocomplete="form[item].treatAsMfm" :mfmPreview="form[item].treatAsMfm">
-					<template #label><span v-text="form[item].label || item"></span><span v-if="form[item].required === false"> ({{ i18n.ts.optional }})</span></template>
-					<template v-if="form[item].description" #caption>{{ form[item].description }}</template>
+				<MkTextarea v-else-if="v.type === 'string' && v.multiline" v-model="values[k]" :mfmAutocomplete="v.treatAsMfm" :mfmPreview="v.treatAsMfm">
+					<template #label><span v-text="v.label || k"></span><span v-if="v.required === false"> ({{ i18n.ts.optional }})</span></template>
+					<template v-if="v.description" #caption>{{ v.description }}</template>
 				</MkTextarea>
-				<MkSwitch v-else-if="form[item].type === 'boolean'" v-model="values[item]">
-					<span v-text="form[item].label || item"></span>
-					<template v-if="form[item].description" #caption>{{ form[item].description }}</template>
+				<MkSwitch v-else-if="v.type === 'boolean'" v-model="values[k]">
+					<span v-text="v.label || k"></span>
+					<template v-if="v.description" #caption>{{ v.description }}</template>
 				</MkSwitch>
-				<MkSelect v-else-if="form[item].type === 'enum'" v-model="values[item]">
-					<template #label><span v-text="form[item].label || item"></span><span v-if="form[item].required === false"> ({{ i18n.ts.optional }})</span></template>
-					<option v-for="option in form[item].enum" :key="option.value" :value="option.value">{{ option.label }}</option>
+				<MkSelect v-else-if="v.type === 'enum'" v-model="values[k]">
+					<template #label><span v-text="v.label || k"></span><span v-if="v.required === false"> ({{ i18n.ts.optional }})</span></template>
+					<option v-for="option in v.enum" :key="option.value" :value="option.value">{{ option.label }}</option>
 				</MkSelect>
-				<MkRadios v-else-if="form[item].type === 'radio'" v-model="values[item]">
-					<template #label><span v-text="form[item].label || item"></span><span v-if="form[item].required === false"> ({{ i18n.ts.optional }})</span></template>
-					<option v-for="option in form[item].options" :key="option.value" :value="option.value">{{ option.label }}</option>
+				<MkRadios v-else-if="v.type === 'radio'" v-model="values[k]">
+					<template #label><span v-text="v.label || k"></span><span v-if="v.required === false"> ({{ i18n.ts.optional }})</span></template>
+					<option v-for="option in v.options" :key="option.value" :value="option.value">{{ option.label }}</option>
 				</MkRadios>
-				<MkRange v-else-if="form[item].type === 'range'" v-model="values[item]" :min="form[item].min" :max="form[item].max" :step="form[item].step" :textConverter="form[item].textConverter">
-					<template #label><span v-text="form[item].label || item"></span><span v-if="form[item].required === false"> ({{ i18n.ts.optional }})</span></template>
-					<template v-if="form[item].description" #caption>{{ form[item].description }}</template>
+				<MkRange v-else-if="v.type === 'range'" v-model="values[k]" :min="v.min" :max="v.max" :step="v.step" :textConverter="v.textConverter">
+					<template #label><span v-text="v.label || k"></span><span v-if="v.required === false"> ({{ i18n.ts.optional }})</span></template>
+					<template v-if="v.description" #caption>{{ v.description }}</template>
 				</MkRange>
-				<MkButton v-else-if="form[item].type === 'button'" @click="form[item].action($event, values)">
-					<span v-text="form[item].content || item"></span>
+				<MkButton v-else-if="v.type === 'button'" @click="v.action($event, values)">
+					<span v-text="v.content || k"></span>
 				</MkButton>
 			</template>
 		</div>
@@ -72,19 +72,21 @@ import MkSelect from './MkSelect.vue';
 import MkRange from './MkRange.vue';
 import MkButton from './MkButton.vue';
 import MkRadios from './MkRadios.vue';
+import type { Form } from '@/scripts/form.js';
 import MkModalWindow from '@/components/MkModalWindow.vue';
 import { i18n } from '@/i18n.js';
 import { infoImageUrl } from '@/instance.js';
 
 const props = defineProps<{
 	title: string;
-	form: any;
+	form: Form;
 }>();
 
 const emit = defineEmits<{
 	(ev: 'done', v: {
-		canceled?: boolean;
-		result?: any;
+		canceled: true;
+	} | {
+		result: Record<string, any>;
 	}): void;
 	(ev: 'closed'): void;
 }>();
diff --git a/packages/frontend/src/os.ts b/packages/frontend/src/os.ts
index a4fde6b701..c561e84a23 100644
--- a/packages/frontend/src/os.ts
+++ b/packages/frontend/src/os.ts
@@ -7,9 +7,9 @@
 
 import { Component, markRaw, Ref, ref, defineAsyncComponent } from 'vue';
 import { EventEmitter } from 'eventemitter3';
-import insertTextAtCursor from 'insert-text-at-cursor';
 import * as Misskey from 'misskey-js';
-import type { ComponentProps } from 'vue-component-type-helpers';
+import type { ComponentProps as CP } from 'vue-component-type-helpers';
+import type { Form, GetFormResultType } from '@/scripts/form.js';
 import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import MkPostFormDialog from '@/components/MkPostFormDialog.vue';
@@ -19,7 +19,6 @@ import MkToast from '@/components/MkToast.vue';
 import MkDialog from '@/components/MkDialog.vue';
 import MkPasswordDialog from '@/components/MkPasswordDialog.vue';
 import MkEmojiPickerDialog from '@/components/MkEmojiPickerDialog.vue';
-import MkEmojiPickerWindow from '@/components/MkEmojiPickerWindow.vue';
 import MkPopupMenu from '@/components/MkPopupMenu.vue';
 import MkContextMenu from '@/components/MkContextMenu.vue';
 import { MenuItem } from '@/types/menu.js';
@@ -28,15 +27,15 @@ import { showMovedDialog } from '@/scripts/show-moved-dialog.js';
 
 export const openingWindowsCount = ref(0);
 
-export const apiWithDialog = ((
-	endpoint: string,
-	data: Record<string, any> = {},
+export const apiWithDialog = (<E extends keyof Misskey.Endpoints = keyof Misskey.Endpoints, P extends Misskey.Endpoints[E]['req'] = Misskey.Endpoints[E]['req']>(
+	endpoint: E,
+	data: P = {} as any,
 	token?: string | null | undefined,
 ) => {
 	const promise = misskeyApi(endpoint, data, token);
 	promiseDialog(promise, null, async (err) => {
-		let title = null;
-		let text = err.message + '\n' + (err as any).id;
+		let title: string | undefined;
+		let text = err.message + '\n' + err.id;
 		if (err.code === 'INTERNAL_ERROR') {
 			title = i18n.ts.internalServerError;
 			text = i18n.ts.internalServerErrorDescription;
@@ -88,7 +87,7 @@ export const apiWithDialog = ((
 export function promiseDialog<T extends Promise<any>>(
 	promise: T,
 	onSuccess?: ((res: any) => void) | null,
-	onFailure?: ((err: Error) => void) | null,
+	onFailure?: ((err: Misskey.api.APIError) => void) | null,
 	text?: string,
 ): T {
 	const showing = ref(true);
@@ -149,14 +148,30 @@ export function claimZIndex(priority: keyof typeof zIndexes = 'low'): number {
 // 使い物にならないので、代わりに ['$props'] から色々省くことで emit の型を生成する
 // FIXME: 何故か *.ts ファイルからだと型がうまく取れない？ことがあるのをなんとかしたい
 type ComponentEmit<T> = T extends new () => { $props: infer Props }
-	? EmitsExtractor<Props>
-	: never;
+	? [keyof Pick<T, Extract<keyof T, `on${string}`>>] extends [never]
+		? Record<string, unknown> // *.ts ファイルから型がうまく取れないとき用（これがないと {} になって型エラーがうるさい）
+		: EmitsExtractor<Props>
+	: T extends (...args: any) => any
+		? ReturnType<T> extends { [x: string]: any; __ctx?: { [x: string]: any; props: infer Props } }
+			? [keyof Pick<T, Extract<keyof T, `on${string}`>>] extends [never]
+				? Record<string, unknown>
+				: EmitsExtractor<Props>
+			: never
+		: never;
+
+// props に ref を許可するようにする
+type ComponentProps<T extends Component> = { [K in keyof CP<T>]: CP<T>[K] | Ref<CP<T>[K]> };
 
 type EmitsExtractor<T> = {
 	[K in keyof T as K extends `onVnode${string}` ? never : K extends `on${infer E}` ? Uncapitalize<E> : K extends string ? never : K]: T[K];
 };
 
-export async function popup<T extends Component>(component: T, props: ComponentProps<T>, events: ComponentEmit<T> = {} as ComponentEmit<T>, disposeEvent?: keyof ComponentEmit<T>) {
+export async function popup<T extends Component>(
+	component: T,
+	props: ComponentProps<T>,
+	events: ComponentEmit<T> = {} as ComponentEmit<T>,
+	disposeEvent?: keyof ComponentEmit<T>,
+): Promise<{ dispose: () => void }> {
 	markRaw(component);
 
 	const id = ++popupIdCount;
@@ -197,12 +212,12 @@ export function toast(message: string) {
 
 export function alert(props: {
 	type?: 'error' | 'info' | 'success' | 'warning' | 'waiting' | 'question';
-	title?: string | null;
-	text?: string | null;
+	title?: string;
+	text?: string;
 }): Promise<void> {
-	return new Promise((resolve, reject) => {
+	return new Promise(resolve => {
 		popup(MkDialog, props, {
-			done: result => {
+			done: () => {
 				resolve();
 			},
 		}, 'closed');
@@ -211,12 +226,12 @@ export function alert(props: {
 
 export function confirm(props: {
 	type: 'error' | 'info' | 'success' | 'warning' | 'waiting' | 'question';
-	title?: string | null;
-	text?: string | null;
+	title?: string;
+	text?: string;
 	okText?: string;
 	cancelText?: string;
 }): Promise<{ canceled: boolean }> {
-	return new Promise((resolve, reject) => {
+	return new Promise(resolve => {
 		popup(MkDialog, {
 			...props,
 			showCancelButton: true,
@@ -237,13 +252,15 @@ export function actions<T extends {
 	danger?: boolean,
 }[]>(props: {
 	type: 'error' | 'info' | 'success' | 'warning' | 'waiting' | 'question';
-	title?: string | null;
-	text?: string | null;
+	title?: string;
+	text?: string;
 	actions: T;
-}): Promise<{ canceled: true; result: undefined; } | {
+}): Promise<{
+	canceled: true; result: undefined;
+} | {
 	canceled: false; result: T[number]['value'];
 }> {
-	return new Promise((resolve, reject) => {
+	return new Promise(resolve => {
 		popup(MkDialog, {
 			...props,
 			actions: props.actions.map(a => ({
@@ -262,19 +279,50 @@ export function actions<T extends {
 	});
 }
 
+// default が指定されていたら result は null になり得ないことを保証する overload function
 export function inputText(props: {
 	type?: 'text' | 'email' | 'password' | 'url';
-	title?: string | null;
-	text?: string | null;
+	title?: string;
+	text?: string;
 	placeholder?: string | null;
 	autocomplete?: string;
-	default?: string | null;
+	default: string;
 	minLength?: number;
 	maxLength?: number;
-}): Promise<{ canceled: true; result: undefined; } | {
+}): Promise<{
+	canceled: true; result: undefined;
+} | {
 	canceled: false; result: string;
+}>;
+export function inputText(props: {
+	type?: 'text' | 'email' | 'password' | 'url';
+	title?: string;
+	text?: string;
+	placeholder?: string | null;
+	autocomplete?: string;
+	default?: string | null;
+	minLength?: number;
+	maxLength?: number;
+}): Promise<{
+	canceled: true; result: undefined;
+} | {
+	canceled: false; result: string | null;
+}>;
+export function inputText(props: {
+	type?: 'text' | 'email' | 'password' | 'url';
+	title?: string;
+	text?: string;
+	placeholder?: string | null;
+	autocomplete?: string;
+	default?: string | null;
+	minLength?: number;
+	maxLength?: number;
+}): Promise<{
+	canceled: true; result: undefined;
+} | {
+	canceled: false; result: string | null;
 }> {
-	return new Promise((resolve, reject) => {
+	return new Promise(resolve => {
 		popup(MkDialog, {
 			title: props.title,
 			text: props.text,
@@ -282,7 +330,7 @@ export function inputText(props: {
 				type: props.type,
 				placeholder: props.placeholder,
 				autocomplete: props.autocomplete,
-				default: props.default,
+				default: props.default ?? null,
 				minLength: props.minLength,
 				maxLength: props.maxLength,
 			},
@@ -294,16 +342,41 @@ export function inputText(props: {
 	});
 }
 
+// default が指定されていたら result は null になり得ないことを保証する overload function
 export function inputNumber(props: {
-	title?: string | null;
-	text?: string | null;
+	title?: string;
+	text?: string;
 	placeholder?: string | null;
 	autocomplete?: string;
-	default?: number | null;
-}): Promise<{ canceled: true; result: undefined; } | {
+	default: number;
+}): Promise<{
+	canceled: true; result: undefined;
+} | {
 	canceled: false; result: number;
+}>;
+export function inputNumber(props: {
+	title?: string;
+	text?: string;
+	placeholder?: string | null;
+	autocomplete?: string;
+	default?: number | null;
+}): Promise<{
+	canceled: true; result: undefined;
+} | {
+	canceled: false; result: number | null;
+}>;
+export function inputNumber(props: {
+	title?: string;
+	text?: string;
+	placeholder?: string | null;
+	autocomplete?: string;
+	default?: number | null;
+}): Promise<{
+	canceled: true; result: undefined;
+} | {
+	canceled: false; result: number | null;
 }> {
-	return new Promise((resolve, reject) => {
+	return new Promise(resolve => {
 		popup(MkDialog, {
 			title: props.title,
 			text: props.text,
@@ -311,7 +384,7 @@ export function inputNumber(props: {
 				type: 'number',
 				placeholder: props.placeholder,
 				autocomplete: props.autocomplete,
-				default: props.default,
+				default: props.default ?? null,
 			},
 		}, {
 			done: result => {
@@ -322,34 +395,38 @@ export function inputNumber(props: {
 }
 
 export function inputDate(props: {
-	title?: string | null;
-	text?: string | null;
+	title?: string;
+	text?: string;
 	placeholder?: string | null;
-	default?: Date | null;
-}): Promise<{ canceled: true; result: undefined; } | {
+	default?: string | null;
+}): Promise<{
+	canceled: true; result: undefined;
+} | {
 	canceled: false; result: Date;
 }> {
-	return new Promise((resolve, reject) => {
+	return new Promise(resolve => {
 		popup(MkDialog, {
 			title: props.title,
 			text: props.text,
 			input: {
 				type: 'date',
 				placeholder: props.placeholder,
-				default: props.default,
+				default: props.default ?? null,
 			},
 		}, {
 			done: result => {
-				resolve(result ? { result: new Date(result.result), canceled: false } : { canceled: true });
+				resolve(result ? { result: new Date(result.result), canceled: false } : { result: undefined, canceled: true });
 			},
 		}, 'closed');
 	});
 }
 
-export function authenticateDialog(): Promise<{ canceled: true; result: undefined; } | {
+export function authenticateDialog(): Promise<{
+	canceled: true; result: undefined;
+} | {
 	canceled: false; result: { password: string; token: string | null; };
 }> {
-	return new Promise((resolve, reject) => {
+	return new Promise(resolve => {
 		popup(MkPasswordDialog, {}, {
 			done: result => {
 				resolve(result ? { canceled: false, result } : { canceled: true, result: undefined });
@@ -358,34 +435,53 @@ export function authenticateDialog(): Promise<{ canceled: true; result: undefine
 	});
 }
 
+// default が指定されていたら result は null になり得ないことを保証する overload function
 export function select<C = any>(props: {
-	title?: string | null;
-	text?: string | null;
+	title?: string;
+	text?: string;
+	default: string;
+	items: {
+		value: C;
+		text: string;
+	}[];
+}): Promise<{
+	canceled: true; result: undefined;
+} | {
+	canceled: false; result: C;
+}>;
+export function select<C = any>(props: {
+	title?: string;
+	text?: string;
 	default?: string | null;
-} & ({
 	items: {
 		value: C;
 		text: string;
 	}[];
+}): Promise<{
+	canceled: true; result: undefined;
 } | {
-	groupedItems: {
-		label: string;
-		items: {
-			value: C;
-			text: string;
-		}[];
+	canceled: false; result: C | null;
+}>;
+export function select<C = any>(props: {
+	title?: string;
+	text?: string;
+	default?: string | null;
+	items: {
+		value: C;
+		text: string;
 	}[];
-})): Promise<{ canceled: true; result: undefined; } | {
-	canceled: false; result: C;
+}): Promise<{
+	canceled: true; result: undefined;
+} | {
+	canceled: false; result: C | null;
 }> {
-	return new Promise((resolve, reject) => {
+	return new Promise(resolve => {
 		popup(MkDialog, {
 			title: props.title,
 			text: props.text,
 			select: {
 				items: props.items,
-				groupedItems: props.groupedItems,
-				default: props.default,
+				default: props.default ?? null,
 			},
 		}, {
 			done: result => {
@@ -396,7 +492,7 @@ export function select<C = any>(props: {
 }
 
 export function success(): Promise<void> {
-	return new Promise((resolve, reject) => {
+	return new Promise(resolve => {
 		const showing = ref(true);
 		window.setTimeout(() => {
 			showing.value = false;
@@ -411,7 +507,7 @@ export function success(): Promise<void> {
 }
 
 export function waiting(): Promise<void> {
-	return new Promise((resolve, reject) => {
+	return new Promise(resolve => {
 		const showing = ref(true);
 		popup(MkWaitingDialog, {
 			success: false,
@@ -422,9 +518,9 @@ export function waiting(): Promise<void> {
 	});
 }
 
-export function form(title, form) {
-	return new Promise((resolve, reject) => {
-		popup(defineAsyncComponent(() => import('@/components/MkFormDialog.vue')), { title, form }, {
+export function form<F extends Form>(title: string, f: F): Promise<{ canceled: true } | { result: GetFormResultType<F> }> {
+	return new Promise(resolve => {
+		popup(defineAsyncComponent(() => import('@/components/MkFormDialog.vue')), { title, form: f }, {
 			done: result => {
 				resolve(result);
 			},
@@ -433,7 +529,7 @@ export function form(title, form) {
 }
 
 export async function selectUser(opts: { includeSelf?: boolean; localOnly?: boolean; } = {}): Promise<Misskey.entities.UserDetailed> {
-	return new Promise((resolve, reject) => {
+	return new Promise(resolve => {
 		popup(defineAsyncComponent(() => import('@/components/MkUserSelectDialog.vue')), {
 			includeSelf: opts.includeSelf,
 			localOnly: opts.localOnly,
@@ -446,7 +542,7 @@ export async function selectUser(opts: { includeSelf?: boolean; localOnly?: bool
 }
 
 export async function selectDriveFile(multiple: boolean): Promise<Misskey.entities.DriveFile[]> {
-	return new Promise((resolve, reject) => {
+	return new Promise(resolve => {
 		popup(defineAsyncComponent(() => import('@/components/MkDriveSelectDialog.vue')), {
 			type: 'file',
 			multiple,
@@ -460,23 +556,23 @@ export async function selectDriveFile(multiple: boolean): Promise<Misskey.entiti
 	});
 }
 
-export async function selectDriveFolder(multiple: boolean) {
-	return new Promise((resolve, reject) => {
+export async function selectDriveFolder(multiple: boolean): Promise<Misskey.entities.DriveFolder[]> {
+	return new Promise(resolve => {
 		popup(defineAsyncComponent(() => import('@/components/MkDriveSelectDialog.vue')), {
 			type: 'folder',
 			multiple,
 		}, {
 			done: folders => {
 				if (folders) {
-					resolve(multiple ? folders : folders[0]);
+					resolve(folders);
 				}
 			},
 		}, 'closed');
 	});
 }
 
-export async function pickEmoji(src: HTMLElement | null, opts) {
-	return new Promise((resolve, reject) => {
+export async function pickEmoji(src: HTMLElement, opts: ComponentProps<typeof MkEmojiPickerDialog>): Promise<string> {
+	return new Promise(resolve => {
 		popup(MkEmojiPickerDialog, {
 			src,
 			...opts,
@@ -492,7 +588,7 @@ export async function cropImage(image: Misskey.entities.DriveFile, options: {
 	aspectRatio: number;
 	uploadFolder?: string | null;
 }): Promise<Misskey.entities.DriveFile> {
-	return new Promise((resolve, reject) => {
+	return new Promise(resolve => {
 		popup(defineAsyncComponent(() => import('@/components/MkCropperDialog.vue')), {
 			file: image,
 			aspectRatio: options.aspectRatio,
@@ -505,67 +601,13 @@ export async function cropImage(image: Misskey.entities.DriveFile, options: {
 	});
 }
 
-type AwaitType<T> =
-	T extends Promise<infer U> ? U :
-	T extends (...args: any[]) => Promise<infer V> ? V :
-	T;
-let openingEmojiPicker: AwaitType<ReturnType<typeof popup>> | null = null;
-let activeTextarea: HTMLTextAreaElement | HTMLInputElement | null = null;
-export async function openEmojiPicker(src?: HTMLElement, opts, initialTextarea: typeof activeTextarea) {
-	if (openingEmojiPicker) return;
-
-	activeTextarea = initialTextarea;
-
-	const textareas = document.querySelectorAll('textarea, input');
-	for (const textarea of Array.from(textareas)) {
-		textarea.addEventListener('focus', () => {
-			activeTextarea = textarea;
-		});
-	}
-
-	const observer = new MutationObserver(records => {
-		for (const record of records) {
-			for (const node of Array.from(record.addedNodes).filter(node => node instanceof HTMLElement) as HTMLElement[]) {
-				const textareas = node.querySelectorAll('textarea, input') as NodeListOf<NonNullable<typeof activeTextarea>>;
-				for (const textarea of Array.from(textareas).filter(textarea => textarea.dataset.preventEmojiInsert == null)) {
-					if (document.activeElement === textarea) activeTextarea = textarea;
-					textarea.addEventListener('focus', () => {
-						activeTextarea = textarea;
-					});
-				}
-			}
-		}
-	});
-
-	observer.observe(document.body, {
-		childList: true,
-		subtree: true,
-		attributes: false,
-		characterData: false,
-	});
-
-	openingEmojiPicker = await popup(MkEmojiPickerWindow, {
-		src,
-		...opts,
-	}, {
-		chosen: emoji => {
-			insertTextAtCursor(activeTextarea, emoji);
-		},
-		closed: () => {
-			openingEmojiPicker!.dispose();
-			openingEmojiPicker = null;
-			observer.disconnect();
-		},
-	});
-}
-
-export function popupMenu(items: MenuItem[] | Ref<MenuItem[]>, src?: HTMLElement | EventTarget | null, options?: {
+export function popupMenu(items: MenuItem[], src?: HTMLElement | EventTarget | null, options?: {
 	align?: string;
 	width?: number;
 	viaKeyboard?: boolean;
 	onClosing?: () => void;
 }): Promise<void> {
-	return new Promise((resolve, reject) => {
+	return new Promise(resolve => {
 		let dispose;
 		popup(MkPopupMenu, {
 			items,
@@ -587,9 +629,9 @@ export function popupMenu(items: MenuItem[] | Ref<MenuItem[]>, src?: HTMLElement
 	});
 }
 
-export function contextMenu(items: MenuItem[] | Ref<MenuItem[]>, ev: MouseEvent): Promise<void> {
+export function contextMenu(items: MenuItem[], ev: MouseEvent): Promise<void> {
 	ev.preventDefault();
-	return new Promise((resolve, reject) => {
+	return new Promise(resolve => {
 		let dispose;
 		popup(MkContextMenu, {
 			items,
@@ -608,7 +650,7 @@ export function contextMenu(items: MenuItem[] | Ref<MenuItem[]>, ev: MouseEvent)
 export function post(props: Record<string, any> = {}): Promise<void> {
 	showMovedDialog();
 
-	return new Promise((resolve, reject) => {
+	return new Promise(resolve => {
 		// NOTE: MkPostFormDialogをdynamic importするとiOSでテキストエリアに自動フォーカスできない
 		// NOTE: ただ、dynamic importしない場合、MkPostFormDialogインスタンスが使いまわされ、
 		//       Vueが渡されたコンポーネントに内部的に__propsというプロパティを生やす影響で、
diff --git a/packages/frontend/src/pages/emoji-edit-dialog.vue b/packages/frontend/src/pages/emoji-edit-dialog.vue
index 12e9416f72..16769ef360 100644
--- a/packages/frontend/src/pages/emoji-edit-dialog.vue
+++ b/packages/frontend/src/pages/emoji-edit-dialog.vue
@@ -135,7 +135,7 @@ async function addRole() {
 	const { canceled, result: role } = await os.select({
 		items: roles.filter(r => r.isPublic).filter(r => !currentRoleIds.includes(r.id)).map(r => ({ text: r.name, value: r })),
 	});
-	if (canceled) return;
+	if (canceled || role == null) return;
 
 	rolesThatCanBeUsedThisEmojiAsReaction.value.push(role);
 }
diff --git a/packages/frontend/src/pages/notifications.vue b/packages/frontend/src/pages/notifications.vue
index 7db6fa5395..28f5838296 100644
--- a/packages/frontend/src/pages/notifications.vue
+++ b/packages/frontend/src/pages/notifications.vue
@@ -52,7 +52,7 @@ const directNotesPagination = {
 function setFilter(ev) {
 	const typeItems = notificationTypes.map(t => ({
 		text: i18n.ts._notification._types[t],
-		active: includeTypes.value && includeTypes.value.includes(t),
+		active: (includeTypes.value && includeTypes.value.includes(t)) ?? false,
 		action: () => {
 			includeTypes.value = [t];
 		},
@@ -63,7 +63,7 @@ function setFilter(ev) {
 		action: () => {
 			includeTypes.value = null;
 		},
-	}, { type: 'divider' }, ...typeItems] : typeItems;
+	}, { type: 'divider' as const }, ...typeItems] : typeItems;
 	os.popupMenu(items, ev.currentTarget ?? ev.target);
 }
 
diff --git a/packages/frontend/src/pages/settings/drive.vue b/packages/frontend/src/pages/settings/drive.vue
index cd38f9850f..1919f80864 100644
--- a/packages/frontend/src/pages/settings/drive.vue
+++ b/packages/frontend/src/pages/settings/drive.vue
@@ -113,7 +113,7 @@ if (defaultStore.state.uploadFolder) {
 
 function chooseUploadFolder() {
 	os.selectDriveFolder(false).then(async folder => {
-		defaultStore.set('uploadFolder', folder ? folder.id : null);
+		defaultStore.set('uploadFolder', folder[0] ? folder[0].id : null);
 		os.success();
 		if (defaultStore.state.uploadFolder) {
 			uploadFolder.value = await misskeyApi('drive/folders/show', {
diff --git a/packages/frontend/src/pages/settings/emoji-picker.vue b/packages/frontend/src/pages/settings/emoji-picker.vue
index 79969427ec..ce296ec183 100644
--- a/packages/frontend/src/pages/settings/emoji-picker.vue
+++ b/packages/frontend/src/pages/settings/emoji-picker.vue
@@ -213,7 +213,7 @@ async function pickEmoji(itemsRef: Ref<string[]>, ev: MouseEvent) {
 	os.pickEmoji(getHTMLElement(ev), {
 		showPinned: false,
 	}).then(it => {
-		const emoji = it as string;
+		const emoji = it;
 		if (!itemsRef.value.includes(emoji)) {
 			itemsRef.value.push(emoji);
 		}
diff --git a/packages/frontend/src/pages/settings/preferences-backups.vue b/packages/frontend/src/pages/settings/preferences-backups.vue
index 676159d1b5..942de19d82 100644
--- a/packages/frontend/src/pages/settings/preferences-backups.vue
+++ b/packages/frontend/src/pages/settings/preferences-backups.vue
@@ -203,6 +203,7 @@ async function saveNew(): Promise<void> {
 
 	const { canceled, result: name } = await os.inputText({
 		title: ts._preferencesBackups.inputName,
+		default: '',
 	});
 	if (canceled) return;
 
@@ -371,6 +372,7 @@ async function rename(id: string): Promise<void> {
 
 	const { canceled: cancel1, result: name } = await os.inputText({
 		title: ts._preferencesBackups.inputName,
+		default: '',
 	});
 	if (cancel1 || profiles.value[id].name === name) return;
 
diff --git a/packages/frontend/src/scripts/form.ts b/packages/frontend/src/scripts/form.ts
index 26a027f461..b0db404f28 100644
--- a/packages/frontend/src/scripts/form.ts
+++ b/packages/frontend/src/scripts/form.ts
@@ -12,29 +12,37 @@ export type FormItem = {
 	label?: string;
 	type: 'string';
 	default: string | null;
+	description?: string;
+	required?: boolean;
 	hidden?: boolean;
 	multiline?: boolean;
+	treatAsMfm?: boolean;
 } | {
 	label?: string;
 	type: 'number';
 	default: number | null;
+	description?: string;
+	required?: boolean;
 	hidden?: boolean;
 	step?: number;
 } | {
 	label?: string;
 	type: 'boolean';
 	default: boolean | null;
+	description?: string;
 	hidden?: boolean;
 } | {
 	label?: string;
 	type: 'enum';
 	default: string | null;
+	required?: boolean;
 	hidden?: boolean;
 	enum: EnumItem[];
 } | {
 	label?: string;
 	type: 'radio';
 	default: unknown | null;
+	required?: boolean;
 	hidden?: boolean;
 	options: {
 		label: string;
@@ -44,9 +52,12 @@ export type FormItem = {
 	label?: string;
 	type: 'range';
 	default: number | null;
-	step: number;
+	description?: string;
+	required?: boolean;
+	step?: number;
 	min: number;
 	max: number;
+	textConverter?: (value: number) => string;
 } | {
 	label?: string;
 	type: 'object';
@@ -57,6 +68,10 @@ export type FormItem = {
 	type: 'array';
 	default: unknown[] | null;
 	hidden: boolean;
+} | {
+	type: 'button';
+	content?: string;
+	action: (ev: MouseEvent, v: any) => void;
 };
 
 export type Form = Record<string, FormItem>;
diff --git a/packages/frontend/src/ui/deck.vue b/packages/frontend/src/ui/deck.vue
index 92d2e23d9b..bdb62dca15 100644
--- a/packages/frontend/src/ui/deck.vue
+++ b/packages/frontend/src/ui/deck.vue
@@ -117,6 +117,7 @@ import XMentionsColumn from '@/ui/deck/mentions-column.vue';
 import XDirectColumn from '@/ui/deck/direct-column.vue';
 import XRoleTimelineColumn from '@/ui/deck/role-timeline-column.vue';
 import { mainRouter } from '@/router/main.js';
+import { MenuItem } from '@/types/menu.js';
 const XStatusBars = defineAsyncComponent(() => import('@/ui/_common_/statusbars.vue'));
 const XAnnouncements = defineAsyncComponent(() => import('@/ui/_common_/announcements.vue'));
 
@@ -221,21 +222,19 @@ document.documentElement.style.scrollBehavior = 'auto';
 loadDeck();
 
 function changeProfile(ev: MouseEvent) {
-	const items = ref([{
+	let items: MenuItem[] = [{
 		text: deckStore.state.profile,
-		active: true.valueOf,
-	}]);
+		active: true,
+		action: () => {},
+	}];
 	getProfiles().then(profiles => {
-		items.value = [{
-			text: deckStore.state.profile,
-			active: true.valueOf,
-		}, ...(profiles.filter(k => k !== deckStore.state.profile).map(k => ({
+		items.push(...(profiles.filter(k => k !== deckStore.state.profile).map(k => ({
 			text: k,
 			action: () => {
 				deckStore.set('profile', k);
 				unisonReload();
 			},
-		}))), { type: 'divider' }, {
+		}))), { type: 'divider' as const }, {
 			text: i18n.ts._deck.newProfile,
 			icon: 'ti ti-plus',
 			action: async () => {
@@ -248,9 +247,10 @@ function changeProfile(ev: MouseEvent) {
 				deckStore.set('profile', name);
 				unisonReload();
 			},
-		}];
+		});
+	}).then(() => {
+		os.popupMenu(items, ev.currentTarget ?? ev.target);
 	});
-	os.popupMenu(items, ev.currentTarget ?? ev.target);
 }
 
 async function deleteProfile() {
diff --git a/packages/frontend/src/widgets/WidgetSlideshow.vue b/packages/frontend/src/widgets/WidgetSlideshow.vue
index 7a3671a240..b8efd3bda9 100644
--- a/packages/frontend/src/widgets/WidgetSlideshow.vue
+++ b/packages/frontend/src/widgets/WidgetSlideshow.vue
@@ -93,10 +93,10 @@ const fetch = () => {
 
 const choose = () => {
 	os.selectDriveFolder(false).then(folder => {
-		if (folder == null) {
+		if (folder[0] == null) {
 			return;
 		}
-		widgetProps.folderId = folder.id;
+		widgetProps.folderId = folder[0].id;
 		save();
 		fetch();
 	});