Function createWritableStreamState

lib/internal/webstreams/writablestream.js:599–621

()

  isBrandCheck('WritableStreamDefaultController');

function createWritableStreamState() {
  return {
    __proto__: null,
    closedPromise: undefined,
    closeRequest: kNilRequest,
    inFlightWriteRequest: kNilRequest,
    inFlightCloseRequest: kNilRequest,
    pendingAbortRequest: kNilPendingAbortRequest,
    backpressure: false,
    controller: undefined,
    state: 'writable',
    storedError: undefined,
    writeRequests: [],
    writer: undefined,
    transfer: {
      __proto__: null,
      readable: undefined,
      port1: undefined,
      port2: undefined,
      promise: undefined,
    },
  };
}

function isWritableStreamLocked(stream) {
  return stream[kState].writer !== undefined;