1.0.2 • Public • Published

JavaScript Custom-Standard Style

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Don't let others decide for you!

All the goodness of feross/standard with an option to set custom rules.


npm install customstandard

Custom Rules

Add a customstandard.rules property to package.json:

  "rules": {
    "space-before-function-paren": [2, "never"]




The easiest way to use JavaScript Custom-Standard Style to check your code is to install it globally as a Node command line program. To do so, simply run the following command in your terminal (flag -g installs semistandard globally on your system, omit it if you want to install in the current working directory):

npm install customstandard -g

After you've done that you should be able to use the customstandard program. The simplest use case would be checking the style of all JavaScript files in the current working directory:

$ customstandard
Error: Use JavaScript Custom-Standard Style
  lib/torrent.js:950:11: Expected '===' and instead saw '=='.

What you might do if you're clever

  1. Add it to package.json
  "name": "my-cool-package",
  "devDependencies": {
    "customstandard": "*"
  "scripts": {
    "test": "customstandard && node my-normal-tests-littered-with-custom-rules.js"
  1. Check style automatically when you run npm test
$ npm test
Error: Code style check failed:
  lib/torrent.js:950:11: Expected '===' and instead saw '=='.
  1. Never give style feedback on a pull request again!

Custom Parser

To use a custom parser, install it from npm (example: npm install babel-eslint) and add this to your package.json:

  "customstandard": {
    "parser": "babel-eslint"

Ignoring files

Just like in standard, The paths node_modules/**, *.min.js, bundle.js, coverage/**, hidden files/folders (beginning with .), and all patterns in a project's root .gitignore file are automatically excluded when looking for .js files to check.

Sometimes you need to ignore additional folders or specific minfied files. To do that, add a customstandard.ignore property to package.json:

  "ignore": [

Make it look snazzy

If you want prettier output, just install the snazzy package and pipe customstandard to it:

$ customstandard --verbose | snazzy

See feross/standard for more information.

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npm i customstandard

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