FoundKey/packages/backend/src/misc/check-word-mute.ts

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import RE2 from 're2';
import { Note } from '@/models/entities/note.js';
import { User } from '@/models/entities/user.js';
type NoteLike = {
userId: Note['userId'];
text: Note['text'];
};
type UserLike = {
id: User['id'];
};
export async function checkWordMute(note: NoteLike, me: UserLike | null | undefined, mutedWords: Array<string | string[]>): Promise<boolean> {
// 自分自身
if (me && (note.userId === me.id)) return false;
if (mutedWords.length > 0) {
if (note.text == null) return false;
const matched = mutedWords.some(filter => {
if (Array.isArray(filter)) {
return filter.every(keyword => note.text!.includes(keyword));
} else {
// represents RegExp
const regexp = filter.match(/^\/(.+)\/(.*)$/);
// This should never happen due to input sanitisation.
if (!regexp) return false;
try {
return new RE2(regexp[1], regexp[2]).test(note.text!);
} catch (err) {
// This should never happen due to input sanitisation.
return false;
}
}
});
if (matched) return true;
}
return false;
}