method IMongoCollection.findOne IMongoCollection.findOne(filter: Record<string, unknown>,options?: MongoOptions & { projection?: Record<string, 0 | 1>; sort?: Record<string, unknown>; }): Promise<Record<string, unknown> | null> Finds a single document. Parameters filter: Record<string, unknown> The match filter optional options: MongoOptions & { projection?: Record<string, 0 | 1>; sort?: Record<string, unknown>; } The findOne options (projection/sort) Return Type Promise<Record<string, unknown> | null> The matching document, or null