/usr/lib/nodejs/through2/through2.js is in node-through2 2.0.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | var Transform = require('stream').Transform
, inherits = require('util').inherits
, xtend = require('xtend')
function DestroyableTransform(opts) {
Transform.call(this, opts)
this._destroyed = false
}
inherits(DestroyableTransform, Transform)
DestroyableTransform.prototype.destroy = function(err) {
if (this._destroyed) return
this._destroyed = true
var self = this
process.nextTick(function() {
if (err)
self.emit('error', err)
self.emit('close')
})
}
// a noop _transform function
function noop (chunk, enc, callback) {
callback(null, chunk)
}
// create a new export function, used by both the main export and
// the .ctor export, contains common logic for dealing with arguments
function through2 (construct) {
return function (options, transform, flush) {
if (typeof options == 'function') {
flush = transform
transform = options
options = {}
}
if (typeof transform != 'function')
transform = noop
if (typeof flush != 'function')
flush = null
return construct(options, transform, flush)
}
}
// main export, just make me a transform stream!
module.exports = through2(function (options, transform, flush) {
var t2 = new DestroyableTransform(options)
t2._transform = transform
if (flush)
t2._flush = flush
return t2
})
// make me a reusable prototype that I can `new`, or implicitly `new`
// with a constructor call
module.exports.ctor = through2(function (options, transform, flush) {
function Through2 (override) {
if (!(this instanceof Through2))
return new Through2(override)
this.options = xtend(options, override)
DestroyableTransform.call(this, this.options)
}
inherits(Through2, DestroyableTransform)
Through2.prototype._transform = transform
if (flush)
Through2.prototype._flush = flush
return Through2
})
module.exports.obj = through2(function (options, transform, flush) {
var t2 = new DestroyableTransform(xtend({ objectMode: true, highWaterMark: 16 }, options))
t2._transform = transform
if (flush)
t2._flush = flush
return t2
})
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