eslint-config-hardcore

The most strict (yet practical) ESLint config

Usage no npm install needed!

<script type="module">
  import eslintConfigHardcore from 'https://cdn.skypack.dev/eslint-config-hardcore';
</script>

README

eslint-config-hardcore

npm code style: prettier

The most strict (yet practical) ESLint config.

Aims to include as many plugins and rules as possible to make your code extremely consistent and robust.

34 plugins. 1035 rules.

Usage

npm install eslint-config-hardcore --save-dev

Available configs:

  • hardcore - base framework-agnostic config
  • hardcore/ts - additional config for TypeScript
  • hardcore/node- additional config for Node.js
  • hardcore/react - additional config for React
  • hardcore/react-testing-library - additional config for React Testing Library
  • hardcore/jest - additional config for Jest
  • hardcore/fp - additional config for functional programming
  • hardcore/ts-for-js - additional config for linting JavaScript with typescript-eslint

Example .eslintrc.json for a React project:

{
  "extends": [
    "hardcore",
    "hardcore/react",
    "hardcore/react-testing-library",
    "hardcore/jest",
    "hardcore/fp"
  ],

  "env": {
    "browser": true
  },

  "overrides": [
    {
      "files": ["server/**/*.js"],
      "extends": ["hardcore/node"],
      "env": {
        "browser": false
      }
    }
  ]
}

Example .eslintrc.json for a TypeScript React project:

{
  "extends": [
    "hardcore",
    "hardcore/react",
    "hardcore/react-testing-library",
    "hardcore/jest",
    "hardcore/fp",
    "hardcore/ts"
  ],

  "parserOptions": {
    "project": "./tsconfig.json"
  },

  "env": {
    "browser": true
  },

  "overrides": [
    {
      "files": ["server/**/*.ts"],
      "extends": ["hardcore/node"],
      "env": {
        "browser": false
      }
    }
  ]
}

Configs

hardcore

Base framework-agnostic config.

Plugin Enabled rules
ESLint core rules 186
eslint-plugin-putout 91
eslint-plugin-prettier 84
eslint-plugin-unicorn 80
eslint-plugin-regexp 69
eslint-plugin-import 34
eslint-plugin-sonarjs 30
HTML ESLint 21
eslint-plugin-promise 12
eslint-plugin-security 11
eslint-plugin-array-func 4
eslint-plugin-eslint-comments 6
eslint-plugin-no-constructor-bind 2
@shopify/eslint-plugin 1
eslint-plugin-no-use-extend-native 1
eslint-plugin-ext 1
eslint-plugin-anti-trojan-source 1
eslint-plugin-json¹ 1
Total: 635

¹ eslint-plugin-json actually includes 19 rules, but I consider them as one "no-invalid-json" rule.

hardcore/ts

Config for TypeScript.

Plugin Enabled rules
typescript-eslint 100
eslint-plugin-etc 10
@shopify/eslint-plugin 3
eslint-plugin-sort-class-members 1
eslint-plugin-no-explicit-type-exports 1
Total: 115

hardcore/node

Config for Node.js.

Plugin Enabled rules
eslint-plugin-node 35
Total: 35

hardcore/react

Config for React.

Plugin Enabled rules
eslint-plugin-react 77
eslint-plugin-jsx-a11y 32
eslint-plugin-react-perf 4
eslint-plugin-react-form-fields 4
@shopify/eslint-plugin 3
eslint-plugin-react-hook-form 3
eslint-plugin-react-hooks 2
Total: 125

hardcore/react-testing-library

Config for React Testing Library.

Plugin Enabled rules
eslint-plugin-testing-library 24
Total: 24

hardcore/jest

Config for Jest.

Plugin Enabled rules
eslint-plugin-jest 46
eslint-plugin-jest-dom 11
eslint-plugin-jest-formatting 7
Total: 64

hardcore/fp

Config for functional programming.

Plugin Enabled rules
eslint-plugin-fp 13
eslint-plugin-ramda 24
Total: 37

hardcore/ts-for-js

Config for linting JavaScript with typescript-eslint.

Plugin Enabled rules
typescript-eslint 26
@shopify/eslint-plugin 2
eslint-plugin-sort-class-members 1
Total: 29

Did you know you can lint JavaScript code with typescript-eslint?

Use this config to take advantage of typescript-eslint's advanced type-aware rules (like @typescript-eslint/naming-convention and @typescript-eslint/prefer-optional-chain) without the need to switch to writing TypeScript.

  1. First, you'll need to create tsconfig.json in the root of your project. You don't have to specify any options, just {} should do it.
  2. Then add hardcore/ts-for-js to the overrides section in your .eslintrc like this:
{
  "extends": ["hardcore"],

  "env": {
    "browser": true
  },

  "overrides": [
    {
      "files": ["*.js"],
      "extends": ["hardcore/ts-for-js"],
      "parserOptions": {
        "project": "./tsconfig.json"
      }
    }
  ]
}

Changelog

License

MIT