Function waitForDrain

lib/internal/streams/iter/classic.js:519–524

()

  }

  function waitForDrain() {
    const { promise, resolve, reject } = PromiseWithResolvers();
    ArrayPrototypePush(waiters, { __proto__: null, resolve, reject });
    installListeners();
    return promise;
  }

  function isWritable() {
    // Duck-typed streams may not have these properties -- treat missing