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var releaseChecker = require("release-checker")

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release-checker v0.10.0

Check your release before publishing

Release Checker (alpha)

Build Status Build status npm version

There are numerous ways to "shoot yourself in the foot" using npm publish. The purpose of this module is to validate that your project is ready to be published in a safe way.

It checks the following:

  • package.json file is valid
  • build pass (unreleased)
  • tests pass
  • there is no sensitive data embedded in the package that will be sent to the registry
  • there is no useless files (like tests files) embedded in the package that will be sent to the registry
  • there are no vulnerable dependencies (unreleased)
  • there are no uncommitted changes in the working tree
  • there are no untracked files in the working tree
  • current branch is master or release
  • git tag matches version specified in the package.json
  • all licences declared in dependencies are valid (unreleased)


If you are running node 8 or above, and the package.json file has an already existing prepublish script, you should rename that script to prepublishOnly before using release-checker.

  • Run npm help scripts to get more details.


  • local install

    npm install --save-dev release-checker

    Then add this script in the scripts section of the package.json file:

    "scripts": {
        "release-checker": "release-checker"
  • global install

    npm install -g release-checker

Basic usage

  • local install

    npm run release-checker
  • global install

  • zero install

    npx release-checker

Command-line Options

When you specify no option, all checkers will run.

if you want to run only specific checkers, use the command-line options specific to these checkers.

-b, --branch

Ensure that current branch is master or release.

-c, --uncommited-files

Ensure there are no uncommited files in the working tree.

npx release-checker --uncommited-files


Customize the sensitive or useless data checker. This will create, in the current directory, a .sensitivedata file that you can customize to fit your needs.

npx release-checker --customize-sensitivedata

-h, --help

Show help.

npx release-checker --help

-s, --sensitivedata

Ensure there is no sensitive or useless data in the npm package.

npx release-checker --sensitivedata


Use this option when you want to run all checkers except specific ones.

For example this command will run all checkers except the test checker:

npx release-checker --skip-test

This other example will run all checkers except the test checker and the git-branch checker

npx release-checker --skip-test --skip-branch

The above command could be also rewritten to:

npx release-checker --skip-t --skip-b

-T, --tag

Ensure that latest git tag matches package.json version

npx release-checker --tag

-t, --test

Ensure that command npm test is successfull.

npx release-checker --test

-u, --untracked-files

Ensure there are no untracked files in the working tree.

npx release-checker --untracked-files

Sensitive or useless data Checker

This Checker checks there is no sensitive and no useless files inside the to-be-published package. This check performs only if npm version is 5.9.0 or above.

It will detect the following files:

  • Benchmark files
  • Configuration files
    • CI
    • eslint
    • GitHub
    • JetBrains
    • Visual Studio Code
  • Coverage files
  • Demo files
  • Dependency directories
  • Doc files
  • Example files
  • Log files
  • Private SSH key
  • Script files
  • Secret files
  • Source files
  • Temp files
  • Test files
  • Zip files
    • Output of 'npm pack' command

These files are defined inside the built-in .sensitivedata file.

You may completely override this file by creating a .sensitivedata file in the root directory of your project so that this checker fits your needs:

  • to create this file, just run the command:
npx release-checker --customize-sensitivedata
  • if you create your own .sensitivedata file, and the package.json file has no files section, consider adding .sensitivedata to the .npmignore file.


This project is a port of all validations provided by publish-please

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