12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364
// 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';require('../common');const { Readable: R, Writable: W } = require('stream');const assert = require('assert');
const src = new R({ encoding: 'base64' });const dst = new W();let hasRead = false;const accum = [];
src._read = function(n) {  if (!hasRead) {    hasRead = true;    process.nextTick(function() {      src.push(Buffer.from('1'));      src.push(null);    });  }};
dst._write = function(chunk, enc, cb) {  accum.push(chunk);  cb();};
src.on('end', function() {  assert.strictEqual(String(Buffer.concat(accum)), 'MQ==');  clearTimeout(timeout);});
src.pipe(dst);
const timeout = setTimeout(function() {  assert.fail('timed out waiting for _write');}, 100);