Different eslint rules based on file extension

Question

Is it possible to have different rules applied to files based on their files extension? For example I have [test].spec.js test spec files residing along my source code, but I like to add rules that only apply to them only.

zcoop98 · Accepted Answer · 2023-04-05 23:41:50Z

69

This was added. Example from the docs:

{
  "rules": {
    "quotes": [ 2, "double" ]
  },

  "overrides": [
    {
      "files": [ "bin/*.js", "lib/*.js" ],
      "excludedFiles": "*.test.js",
      "rules": {
        "quotes": [ 2, "single" ]
      }
    }
  ]
}

Effecitively you can supply globs and a set of rules that override the default rules for files that match each glob.

edited Apr 5, 2023 at 23:41

zcoop98

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answered Jan 30, 2018 at 13:33

user128511

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3 Comments

smac89 Over a year ago

What I hate about this is that now, there is no way to share the rules.

smac89 Over a year ago

Actually nvm, I figured out the way: You can just add a new object to the overrides section which includes all the file extensions, and then define your rules in this object

Rémi Benoit Over a year ago

Doc link needs to be updated eslint.org/docs/user-guide/configuring/…

Ilya Volodin · Accepted Answer · 2017-03-01 22:17:43Z

2

Currently it's not possible, unless you create multiple configuration files and run eslint with correct globs for each file type separately. However, there's an open PR here: https://github.com/eslint/eslint/pull/8081 to add this functionality.

answered Mar 1, 2017 at 22:17

Ilya Volodin

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2 Comments

flying sheep Over a year ago

Available since 4.1.0: github.com/eslint/eslint/releases/tag/v4.1.0

Max Carroll Over a year ago

What should happen to this answer now?

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