stream-police

    2.0.0 • Public • Published

    stream-police

    Build Status npm install npm version js-standard-style License

    Filter your streams.

    usage

    streamPolice(validateFunction[, streamOptions]) -> DuplexStream

    • For every chunk of data written to DuplexStream, it will be passed to validateFunction which is expected to return a boolean value indicating whether the value should be emitted or not.
    • streamOptions is an optional argument that will be passed to instantiate DuplexStream

    example

    var police = require('stream-police')
     
    var stream = police(isNaN)
     
    stream.write('5') // stream emits nothing
    stream.write('!') // stream emits '!'

    or:

    var police = require('stream-police')
     
    var stream = police(hasCat, {objectMode: true})
     
    function hasCat (obj) {
      return obj.hasOwnProperty('cat')
    }
     
    stream.write({dog: 'woof'}) // stream emits nothing
    stream.write({cat: 'meow'}) // stream emits {cat: 'meow'}

    license

    MIT

    Keywords

    Install

    npm i stream-police

    DownloadsWeekly Downloads

    8

    Version

    2.0.0

    License

    MIT

    Last publish

    Collaborators

    • jarofghosts