fix: 複数idを指定する`users/show`が関係ないユーザを返すことがある問題を修正 (#13765)

* fix: 複数idを指定する`users/show`が関係ないユーザを返すことがある問題を修正

* test: fix misskey js test

* chore: user/showがnullを返さないように

* chore: pass lambda instead of pushVisibleUser

3 files changed, 7 insertions, 9 deletions

diff --git a/packages/backend/src/misc/json-schema.ts b/packages/backend/src/misc/json-schema.ts
index a620d7c94b..41e5bfe9e4 100644
--- a/packages/backend/src/misc/json-schema.ts
+++ b/packages/backend/src/misc/json-schema.ts
@@ -228,7 +228,7 @@ export type SchemaTypeDef<p extends Schema> =
 			p['items']['allOf'] extends ReadonlyArray<Schema> ? UnionToIntersection<UnionSchemaType<NonNullable<p['items']['allOf']>>>[] :
 			never
 		) :
-		p['items'] extends NonNullable<Schema> ? SchemaTypeDef<p['items']>[] :
+		p['items'] extends NonNullable<Schema> ? SchemaType<p['items']>[] :
 		any[]
 	) :
 	p['anyOf'] extends ReadonlyArray<Schema> ? UnionSchemaType<p['anyOf']> & PartialIntersection<UnionSchemaType<p['anyOf']>> :
diff --git a/packages/backend/src/server/api/endpoints/users/show.ts b/packages/backend/src/server/api/endpoints/users/show.ts
index bd81989cb9..26cfa921c5 100644
--- a/packages/backend/src/server/api/endpoints/users/show.ts
+++ b/packages/backend/src/server/api/endpoints/users/show.ts
@@ -110,9 +110,11 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				});
 
 				// リクエストされた通りに並べ替え
+				// 順番は保持されるけど数は減ってる可能性がある
 				const _users: MiUser[] = [];
 				for (const id of ps.userIds) {
-					_users.push(users.find(x => x.id === id)!);
+					const user = users.find(x => x.id === id);
+					if (user != null) _users.push(user);
 				}
 
 				return await Promise.all(_users.map(u => this.userEntityService.pack(u, me, {
diff --git a/packages/frontend/src/components/MkPostForm.vue b/packages/frontend/src/components/MkPostForm.vue
index 7dbc127298..41d603e40f 100644
--- a/packages/frontend/src/components/MkPostForm.vue
+++ b/packages/frontend/src/components/MkPostForm.vue
@@ -190,7 +190,7 @@ const localOnly = ref(props.initialLocalOnly ?? (defaultStore.state.rememberNote
 const visibility = ref(props.initialVisibility ?? (defaultStore.state.rememberNoteVisibility ? defaultStore.state.visibility : defaultStore.state.defaultNoteVisibility));
 const visibleUsers = ref<Misskey.entities.UserDetailed[]>([]);
 if (props.initialVisibleUsers) {
-	props.initialVisibleUsers.forEach(pushVisibleUser);
+	props.initialVisibleUsers.forEach(u => pushVisibleUser(u));
 }
 const reactionAcceptance = ref(defaultStore.state.reactionAcceptance);
 const autocomplete = ref(null);
@@ -336,7 +336,7 @@ if (props.reply && ['home', 'followers', 'specified'].includes(props.reply.visib
 			misskeyApi('users/show', {
 				userIds: props.reply.visibleUserIds.filter(uid => uid !== $i.id && uid !== props.reply?.userId),
 			}).then(users => {
-				users.forEach(pushVisibleUser);
+				users.forEach(u => pushVisibleUser(u));
 			});
 		}
 
@@ -967,11 +967,7 @@ onMounted(() => {
 				}
 				if (draft.data.visibleUserIds) {
 					misskeyApi('users/show', { userIds: draft.data.visibleUserIds }).then(users => {
-						for (let i = 0; i < users.length; i++) {
-							if (users[i].id === draft.data.visibleUserIds[i]) {
-								pushVisibleUser(users[i]);
-							}
-						}
+						users.forEach(u => pushVisibleUser(u));
 					});
 				}
 			}