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ESLint fixer

ESLint is a static analysis tool for Javascript code. ESLint covers both code quality and coding style issues.

NPM

If you'd like to install it globally:

npm -g eslint

If you'd like install it as a dev dependency of your project:

npm install eslint --save-dev

To generate a .eslintrc.* config file:

npx eslint --init

Done. See the ESLint Getting Started guide for more info.

Config

It lives under the eslint namespace and has the following configurable parameters:

# grumphp.yml
grumphp:
    tasks:
        eslint:
            bin: node_modules/.bin/eslint
            triggered_by: [js, jsx, ts, tsx, vue]
            whitelist_patterns:
                - /^resources\/js\/(.*)/
            config: .eslintrc.json
            debug: false
            format: ~
            max_warnings: ~
            no_eslintrc: false
            quiet: false

bin

Default: null

The path to your eslint bin executable. Not necessary if eslint is in your $PATH. Can be used to specify path to project's eslint over globally installed eslint.

triggered_by

Default: [js, jsx, ts, tsx, vue]

This is a list of extensions which will trigger the ESLint task.

whitelist_patterns

Default: []

This is a list of regex patterns that will filter files to validate. With this option you can specify the folders containing javascript files and thus skip folders like /tests/ or the /vendor/ directory. This option is used in conjunction with the parameter triggered_by. For example: to whitelist files in resources/js/ (Laravel's JS directory) and assets/js/ (Symfony's JS directory) you can use:

whitelist_patterns:
  - /^resources\/js\/(.*)/
  - /^assets\/js\/(.*)/

config

Default: null

The path to your eslint's configuration file. Not necessary if using a standard eslintrc name, eg. .eslintrc.json, .eslint.js, or .eslint.yml

debug

Default: false

Turn on debug mode (eslint.org).

format

Default: null

Output format, eslint will use stylish by default. Other handy ones on cli are compact, codeframe and table (see full list on eslint.org).

max_warnings

Default: null

Number of warnings (not errors) that are allowed before eslint exits with error status (eslint.org).

no_eslintrc

Default: false

Set to true to ignore local .eslint config file (eslint.org).

quiet

Default: null

Report errors only (no warnings). eslint.org

other settings

Any other eslint settings (such as rules, env, ignore patterns, etc) should be able to be set through an eslint config file (instructions to generate a config file at top of document).