Huge News!Announcing our $40M Series B led by Abstract Ventures.Learn More
Socket
Sign inDemoInstall
Socket

intercept-stdout

Package Overview
Dependencies
Maintainers
1
Versions
5
Alerts
File Explorer

Advanced tools

Socket logo

Install Socket

Detect and block malicious and high-risk dependencies

Install

intercept-stdout

Hooking Node.js stdout

  • 0.1.2
  • latest
  • Source
  • npm
  • Socket score

Version published
Weekly downloads
30K
increased by11.82%
Maintainers
1
Weekly downloads
 
Created
Source

Node.js Intercept stdout

intercept-stdout captures or modifies stdout and/or stderr.

Based on this gist

Capture

var intercept = require("intercept-stdout"),
	captured_text = "";

var unhook_intercept = intercept(function(txt) {
	captured_text += txt;
});

console.log("This text is being captured");

// Let's stop capturing stdout.
unhook_intercept();

console.log("This text is not being captured");

Modify

var intercept = require("intercept-stdout");

var unhook_intercept = intercept(function(txt) {
	return txt.replace( /this/i , 'that' );
});

console.log("This text is being modified");
// -> that text is being modified

Test

npm install
npm test

Separating Error Text

Starting in Version 0.1.2, you may now specify two interceptor callbacks. If a second interceptor callback is specified, the second callback will be invoked for stderr output.

Errors and Warnings

Versions > 0.1.1 hook both stdout and stderr. This change enables capturing of console.log, console.info, console.warn, and console.error. This change may break pre-existing interceptors if your interceptor expected output to be a full line of text.

About Colorization

Popular modules such as mocha and winston may colorize output by inserting ANSI escape codes into the output stream. Both mocha and winston make multiple calls to the output streams while colorizing a line -- in order to be robust, your code should anticipate and deal with this.

Keywords

FAQs

Package last updated on 29 Jul 2015

Did you know?

Socket

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Install

Related posts

SocketSocket SOC 2 Logo

Product

  • Package Alerts
  • Integrations
  • Docs
  • Pricing
  • FAQ
  • Roadmap
  • Changelog

Packages

npm

Stay in touch

Get open source security insights delivered straight into your inbox.


  • Terms
  • Privacy
  • Security

Made with ⚡️ by Socket Inc