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import RE2 from 're2';
import type { Note } from '@/models/entities/Note.js';
import type { User } from '@/models/entities/User.js';
type NoteLike = {
userId: Note['userId'];
text: Note['text'];
cw?: Note['cw'];
};
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) {
const text = ((note.cw ?? '') + '\n' + (note.text ?? '')).trim();
if (text === '') return false;
const matched = mutedWords.some(filter => {
if (Array.isArray(filter)) {
return filter.every(keyword => 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(text);
} catch (err) {
// This should never happen due to input sanitisation.
return false;
}
}
});
if (matched) return true;
}
return false;
}
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