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lib/internal/streams/passthrough.js
47 строк
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Antoine du Hamel
lib: revert primordials in a hot path
19 апр 2021, 11:23
19 апр 2021, 11:23
ee9e2a2
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// 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. // a passthrough stream. // basically just the most minimal sort of Transform stream. // Every written chunk gets output as-is. 'use strict'; const { ObjectSetPrototypeOf, } = primordials; module.exports = PassThrough; const Transform = require('internal/streams/transform'); ObjectSetPrototypeOf(PassThrough.prototype, Transform.prototype); ObjectSetPrototypeOf(PassThrough, Transform); function PassThrough(options) { if (!(this instanceof PassThrough)) return new PassThrough(options); Transform.call(this, options); } PassThrough.prototype._transform = function(chunk, encoding, cb) { cb(null, chunk); };