Automated license checker for validating project dependencies for compatable Apache2 licenses.

Usage no npm install needed!

<script type="module">
  import apache2LicenseChecker from 'https://cdn.skypack.dev/apache2-license-checker';


Apache2 License Checker

Automated license checker for validating project dependencies for compatible Apache2 licenses.

Use with your project

  • Run npm install apache2-license-checker --save-dev
  • Run apache2-license-checker in the root of your project
  • Modify your package.json to include apache2-license-checker as part of your test script

For example:

  "scripts": {
    "test": "mocha && npm run check-licenses",
    "check-licenses": "apache2-license-checker"

The license checker will fail with an exit code of 1 if there are any problems with the license, and will pass with an exit code of 0 if all checks are ok.

A temporary file licenses.json will be created containing a full license analysis based on output from the license-checker tool.


  • Check out the code
  • Run npm install
  • Run npm test

Modify scripts/whitelist.js to allow additional licenses or license combinations.

Modify scripts/exceptions.js to allow specific modules for a given reason.

Example output

Acceptable project licenses (uses):
  (MIT AND CC-BY-3.0) (1)
  Apache-2.0 (3)
  BSD-2-Clause (1)
  BSD-3-Clause (1)
  ISC (15)
  MIT (23)
  Unlicense (1)
  WTFPL (1)

Acceptable project license exceptions:
    Reason: Not required, acceptable use for BBC internal deployments
    Reason: Public Domain; see: https://github.com/dscape/cycle/
    Reason: MIT License; see: https://github.com/dominictarr/map-stream

All licenses ok Licensed (46) Exceptions (0) Problems (0)