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@enonic/eslint-config

v2.0.0

Published

ESLint rules for JavaScript and TypeScript by Enonic.

Downloads

1,655

Readme

Enonic ESLint Config

Install

  1. Install the latest version of the config:
npm install --save-dev @enonic/eslint-config
  1. Install the correct versions of each package, which are listed by the command:
npm info "@enonic/eslint-config@latest" peerDependencies

If you DON'T need to lint TypeScript, you should skip this step (see the vanilla configuration).

Make sure you intall the same version of @typescript-eslint/eslint-plugin and @typescript-eslint/parser packages.

Usage

.eslintrc.json

{
    "extends": "@enonic/eslint-config",
    "overrides": [
        {
            "files": ["*.ts", "*.tsx"],
            "parserOptions": {
                "project": "./tsconfig.json"
            }
        }
    ]
}

Some of the rules require parserServices to be generated, therefore project property must be explicitly set. Take a note, that TypeScript configuration is isolated by the *.ts/*.tsx scope.

Configuration

Aside from @enonic/eslint-config, this package contains four more configurations:

Standalone

  • @enonic/eslint-config/vanilla should replace default configuration in JavaScript-only projects.
  • @enonic/eslint-config/typescript should replace default configuration in TypeScript-only projects.

Helpers

  • @enonic/eslint-config/browser adds additional configuration for linting browser files (assets).
  • @enonic/eslint-config/xp adds XP global variables and allows to lint files that will be used by XP.

Helpers must be combined with the default, vanilla, or typescript configuration.

XP and Browser

Your project may contain both server-side and client-side files. In this case, it might be reasonable to use overrides, to prevent specific config to be applied for improper files:

.eslintrc.json

{
    "extends": "@enonic/eslint-config",
    "overrides": [
+       {
+           "files": [
+               "src/main/resources/assets/*.js",
+               "src/main/resources/assets/*.ts"
+           ],
+           "extends": "@enonic/eslint-config/browser"
+       },
+       {
+           "files": [
+               "src/main/resources/lib/*.js",
+               "src/main/resources/lib/*.ts"
+           ],
+           "extends": "@enonic/eslint-config/xp"
+       },
        {
            "files": ["*.ts", "*.tsx"],
            "parserOptions": {
                "project": "./tsconfig.json"
            }
        }
    ]
}

Vanilla JavaScript

The default configuration will lint both TS and JS files. If your project doesn't use TypeScript, then @enonic/eslint-config/vanilla configuration can be used instead. project property must not be specified. No other TS-related peer dependencies must be installed either.

.eslintrc.json

{
-   "extends": "@enonic/eslint-config",
+   "extends": "@enonic/eslint-config/vanilla",
    "overrides": [
-       {
-           "files": ["*.ts", "*.tsx"],
-           "parserOptions": {
-               "project": "./tsconfig.json"
-           }
-       }
+       {
+           "files": ["src/main/resources/assets/*.js"],
+           "extends": "@enonic/eslint-config/browser"
+       },
+       {
+           "files": ["src/main/resources/lib/*.js"],
+           "extends": "@enonic/eslint-config/xp"
+       }
    ]
}

TypeScript

When using the TypeScript configuration instead of the default one, project property must be moved to the parserOptions under the config's root. This configuration should be prefered over the default one, if you lint TypeScript files only. It simplifies the configuration file a bit.

.eslintrc.json

{
-   "extends": "@enonic/eslint-config",
+   "extends": "@enonic/eslint-config/typescript",
+   "parserOptions": {
+       "project": "./tsconfig.json"
+   }
    "overrides": [
-       {
-           "files": ["*.ts", "*.tsx"],
-           "parserOptions": {
-               "project": "./tsconfig.json"
-           }
-       }
+       {
+           "files": ["src/main/resources/assets/*.ts"],
+           "extends": "@enonic/eslint-config/browser"
+       },
+       {
+           "files": ["src/main/resources/lib/*.ts"],
+           "extends": "@enonic/eslint-config/xp"
+       }
    ]
}

License

MIT © Enonic