www.aleph1.co.uk Git - yaffs-website/blob - node_modules/concat-stream/node_modules/readable-stream/lib/_stream_passthrough.js

   1 // a passthrough stream.
   2 // basically just the most minimal sort of Transform stream.
   3 // Every written chunk gets output as-is.
   4
   5 'use strict';
   6
   7 module.exports = PassThrough;
   8
   9 var Transform = require('./_stream_transform');
  10
  11 /*<replacement>*/
  12 var util = require('core-util-is');
  13 util.inherits = require('inherits');
  14 /*</replacement>*/
  15
  16 util.inherits(PassThrough, Transform);
  17
  18 function PassThrough(options) {
  19   if (!(this instanceof PassThrough)) return new PassThrough(options);
  20
  21   Transform.call(this, options);
  22 }
  23
  24 PassThrough.prototype._transform = function (chunk, encoding, cb) {
  25   cb(null, chunk);
  26 };