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// deno-fmt-ignore-file// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.// Taken from Node 18.12.0// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually
'use strict';const common = require('../common');const stream = require('stream');const assert = require('assert');
// A consumer stream with a very low highWaterMark, which starts in a state// where it buffers the chunk it receives rather than indicating that they// have been consumed.const writable = new stream.Writable({  highWaterMark: 5});
let isCurrentlyBufferingWrites = true;const queue = [];
writable._write = (chunk, encoding, cb) => {  if (isCurrentlyBufferingWrites)    queue.push({ chunk, cb });  else    cb();};
const readable = new stream.Readable({  read() {}});
readable.pipe(writable);
readable.once('pause', common.mustCall(() => {  assert.strictEqual(    readable._readableState.awaitDrainWriters,    writable,    'Expected awaitDrainWriters to be a Writable but instead got ' +    `${readable._readableState.awaitDrainWriters}`  );  // First pause, resume manually. The next write() to writable will still  // return false, because chunks are still being buffered, so it will increase  // the awaitDrain counter again.
  process.nextTick(common.mustCall(() => {    readable.resume();  }));
  readable.once('pause', common.mustCall(() => {    assert.strictEqual(      readable._readableState.awaitDrainWriters,      writable,      '.resume() should not reset the awaitDrainWriters, but instead got ' +      `${readable._readableState.awaitDrainWriters}`    );    // Second pause, handle all chunks from now on. Once all callbacks that    // are currently queued up are handled, the awaitDrain drain counter should    // fall back to 0 and all chunks that are pending on the readable side    // should be flushed.    isCurrentlyBufferingWrites = false;    for (const queued of queue)      queued.cb();  }));}));
readable.push(Buffer.alloc(100));  // Fill the writable HWM, first 'pause'.readable.push(Buffer.alloc(100));  // Second 'pause'.readable.push(Buffer.alloc(100));  // Should get through to the writable.readable.push(null);
writable.on('finish', common.mustCall(() => {  assert.strictEqual(    readable._readableState.awaitDrainWriters,    null,    `awaitDrainWriters should be reset to null    after all chunks are written but instead got    ${readable._readableState.awaitDrainWriters}`  );  // Everything okay, all chunks were written.}));