tencent cloud

// 使用 TransformStream 构造得到 WritableStream 对象
const { writable } = new TransformStream();

// 使用 WritableStream 对象获取 writer 
const writer = writable.getWriter();

// writer.closed
readonly closed: Promise<void>;

// writer.ready
readonly ready: Promise<void>;

// writer.desiredSize
readonly desiredSize: number;

writer.write(chunk: Chunk): Promise<void>;

type Chunk = string | ArrayBuffer | ArrayBufferView;

writer.close(): Promise<void>;

writer.abort(reason?: string): Promise<string>;

writer.releaseLock(): void;