stream-via

stream-via

Process each chunk of a stream via the supplied function. Useful for meddling inside a stream pipeline. Works in both string/Buffer and object modes.

Synopsis

Replace all instances of the a character with 4.

const via = require('stream-via')
const fs = require('fs')

process.stdin
  .pipe(via(function (chunk) {
    return chunk.toString().replace(/a/g, '4')
  }))
  .pipe(process.stdout)

Output:

$ echo 'twat' | node example/simple.js
tw4t

API

stream-via

• stream-via
  • via(throughFunction, [options]) ⇒ Duplex ⏏
    • .async(throughFunction, [options]) ⇒ Duplex
    • ~throughFunction : function

via(throughFunction, [options]) ⇒ Duplex ⏏

Kind: Exported function
Params

• throughFunction throughFunction - a function to process each chunk
• [options] object - passed to the returned stream constructor

via.async(throughFunction, [options]) ⇒ Duplex

Kind: static method of via
Params

• throughFunction throughFunction - a function to process each chunk
• [options] object - passed to the returned stream constructor

via~throughFunction : function

Kind: inner typedef of via
Params

• chunk buffer | string
• enc string
• done function - only used in via.async, call it like so: done(err, returnValue).

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© 2015-17 Lloyd Brookes <[e-mail]>. Documented by jsdoc-to-markdown.