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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
// Copyright Joyent, Inc. and other Node contributors.//// Permission is hereby granted, free of charge, to any person obtaining a// copy of this software and associated documentation files (the// "Software"), to deal in the Software without restriction, including// without limitation the rights to use, copy, modify, merge, publish,// distribute, sublicense, and/or sell copies of the Software, and to permit// persons to whom the Software is furnished to do so, subject to the// following conditions://// The above copyright notice and this permission notice shall be included// in all copies or substantial portions of the Software.//// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';const common = require('../common');const assert = require('assert');const { Readable } = require('stream');
let len = 0;const chunks = new Array(10);for (let i = 1; i <= 10; i++) {  chunks[i - 1] = Buffer.allocUnsafe(i);  len += i;}
const test = new Readable();let n = 0;test._read = function(size) {  const chunk = chunks[n++];  setTimeout(function() {    test.push(chunk === undefined ? null : chunk);  }, 1);};
test.on('end', thrower);function thrower() {  throw new Error('this should not happen!');}
let bytesread = 0;test.on('readable', function() {  const b = len - bytesread - 1;  const res = test.read(b);  if (res) {    bytesread += res.length;    console.error(`br=${bytesread} len=${len}`);    setTimeout(next, 1);  }  test.read(0);});test.read(0);
function next() {  // Now let's make 'end' happen  test.removeListener('end', thrower);  test.on('end', common.mustCall());
  // One to get the last byte  let r = test.read();  assert(r);  assert.strictEqual(r.length, 1);  r = test.read();  assert.strictEqual(r, null);}