| module.exports.pipe = require('pump') | 
| module.exports.each = require('stream-each') | 
| module.exports.pipeline = require('pumpify') | 
| module.exports.duplex = require('duplexify') | 
| module.exports.through = require('through2') | 
| module.exports.concat = require('concat-stream') | 
| module.exports.finished = require('end-of-stream') | 
| module.exports.from = require('from2') | 
| module.exports.to = require('flush-write-stream') | 
| module.exports.parallel = require('parallel-transform') |