Method close

lib/internal/webstreams/writablestream.js:265–277

* @returns {Promise }

()

   * @returns {Promise<void>}
   */
  close() {
    if (!isWritableStream(this))
      return PromiseReject(new ERR_INVALID_THIS('WritableStream'));
    if (isWritableStreamLocked(this)) {
      return PromiseReject(
        new ERR_INVALID_STATE.TypeError('WritableStream is locked'));
    }
    if (writableStreamCloseQueuedOrInFlight(this)) {
      return PromiseReject(
        new ERR_INVALID_STATE.TypeError('Failure closing WritableStream'));
    }
    return writableStreamClose(this);
  }

  /**
   * @returns {WritableStreamDefaultWriter}