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require-lint

NPM License

Build Status Dependencies Dev dependencies

Parses your code for require statements, and checks that:

  • all required dependencies are mentioned in package.json
  • all dependencies in package.json are still being used
$ npm install -g require-lint
$ require-lint

[require-lint] Missing dependencies: attempt, express
[require-lint] Extraneous dependencies: lodash

Any failed checks will trigger an exit code of 1, and you can choose to fail your build chain.

Note: require-lint doesn't check dev dependencies, since test code doesn't typically have a single entry point

Default behaviour

By default, it looks for a package.json in the current folder.

$ require-lint

It then parses your source from the entry points declared as main and bin:

{
  "main": "./lib/index.js",
  "bin": {
    "foo": "./bin/foo.js",
    "bar": "./bin/bar.js"
  }
}

Options

You can also specify the following options

  • --pkg

The path to your package.json.

$ require-lint --pkg ~/dev/thing/package.json
  • --src

The path to additional entry points. These must be relative to the given package.json. Globs can be used as paths.

$ require-lint --src lib/server.js --src lib/worker.js
  • --require

Any file to be required before processing, for example to load extra compilers like Coffee-Script. These must be absolute paths or available modules.

$ require-lint --require coffee-script/register
  • --ignore-missing

Modules that should not be considered missing, even if they are not declared in package.json. This is not recommended!

$ require-lint --ignore-missing newrelic
  • --ignore-extra

Modules that should not be considered extraneous, even if they are not required. For example you might have a dependency on coffee-script, but not explicitely require it.

$ require-lint --ignore-extra coffee-script

If you would like to use --ignore-extra with multiple dependencies, you can separate them using commas:

$ require-lint --ignore-extra coffee-script,bootstrap,ejs

Static configuration

All options above can also be saved in a .requirelintrc file at the root of your project. For example:

require=coffee-script/register
ignore-missing=newrelic

This makes it easier to check-in your configuration to source-control, although you could equally save your options in package.json, for example:

{
  "scripts": {
    "lint": "require-lint --require=coffee-script/register"
  }
}

Note that the .requirelintrc file can be located at any path supported by the rc package, such as ~/.requirelintrc or /etc/requirelintrc.

Dev notes

$ npm install
$ npm test

Other projects

Note: inspired by dependency-check. This implementation relies on Module._compile to add support Coffee-Script.