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README.md
collect-all
Returns a stream which fires a callback and becomes readable once all input is received.
By default the callback is invoked with a Buffer instance containing all concatenated input. If you set the option { objectMode: true }
the callback is invoked with an array containing all objects received.
collectAll([callback], [options]) ⇒ Duplex
⏏
Kind: Exported function
Param | Type | Description |
---|---|---|
[callback] | function |
Called once with the collected input data (by default a Buffer instance, or array in objectMode .). The value returned by this callback function will be passed downstream. |
[options] | object |
Stream options object, passed to the constructor for the stream returned by collect-all . If the callback function supplied returns a non-string/buffer value, set options.objectMode to true . |
Example
An example command-line client script - string input received at stdin is stamped with received
then written to stdout.
var collectAll = require('collect-all')
process.stdin
.pipe(collectAll(function (input) {
input = 'received: ' + input
return input
}))
.pipe(process.stdout)
An object-mode example:
var collectAll = require('collect-all')
function onAllCollected (collected) {
console.log('Objects collected: ' + collected.length)
}
var stream = collectAll(onAllCollected, { objectMode: true })
stream.write({})
stream.write({})
stream.end({}) // outputs 'Objects collected: 3'
© 2015-17 Lloyd Brookes <75pound@gmail.com>. Documented by jsdoc-to-markdown.