Favorite eslint config

example-eslintrc.json

{
  "parser": "@typescript-eslint/parser",
  "env": {
    "browser": true,
    "es2021": true,
    "node": true
  },
  "parserOptions": {"ecmaVersion": 2020},
  "plugins": ["@typescript-eslint/eslint-plugin", "import"],
  "extends": [
    "next/core-web-vitals",
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:import/typescript",
    "prettier"
  ],
  "rules": {
    // Import
    "import/default": 0,
    "import-named": 0,
    "import-named-as-default": 0,
    "import/order": [1, {"newlines-between": "always"}],

    // Possible Errors
    "getter-return": 2,
    "no-await-in-loop": 2,
    "no-template-curly-in-string": 2,
    // Best Practices
    "array-callback-return": 2,
    "block-scoped-var": 2,
    "class-methods-use-this": 1,
    "consistent-return": 2,
    "curly": 2,
    "dot-notation": 2,
    "eqeqeq": 2,
    "guard-for-in": 2,
    "no-alert": 2,
    "no-caller": 2,
    "no-console": 1,
    "no-div-regex": 2,
    "no-else-return": 2,
    "no-eq-null": 2,
    "no-eval": 2,
    "no-extend-native": 2,
    "no-extra-bind": 2,
    "no-extra-label": 2,
    "no-implicit-coercion": 2,
    "no-implicit-globals": 2,
    "no-implied-eval": 2,
    "no-iterator": 2,
    "no-labels": 2,
    "no-lone-blocks": 2,
    "no-loop-func": 2,
    "no-multi-str": 2,
    "no-new-func": 2,
    "no-new-wrappers": 2,
    "no-octal-escape": 2,
    "no-param-reassign": 1,
    "no-proto": 2,
    "no-return-assign": 2,
    "no-return-await": 2,
    "no-script-url": 2,
    "no-self-compare": 2,
    "no-sequences": 2,
    "no-throw-literal": 2,
    "no-unmodified-loop-condition": 2,
    "no-unused-expressions": 2,
    "no-useless-call": 2,
    "no-useless-concat": 2,
    "no-useless-return": 2,
    "no-void": 2,
    "no-warning-comments": [1, {"terms": ["todo", "fixme", "@@@"]}],
    "no-with": 2,
    "prefer-promise-reject-errors": [2, {"allowEmptyReject": true}],
    "radix": 2,
    "require-await": 2,
    "yoda": [2, "never", {"exceptRange": true}],

    // Strict Mode
    "strict": 2,

    // Variables
    "no-shadow": 2,
    "no-shadow-restricted-names": 2,
    "no-undef-init": 2,
    "no-use-before-define": 2,

    // Stylistic Issues
    "func-name-matching": 2,
    "func-names": [2, "as-needed"],
    "func-style": 2,
    "linebreak-style": 2,
    "lines-between-class-members": 2,
    "max-len": [
      2,
      {
        "ignoreComments": true,
        "ignoreStrings": true,
        "ignorePattern": "'^import .*'"
      }
    ],
    "new-cap": [2, {"capIsNewExceptions": ["Deferred", "Event"]}],
    "no-array-constructor": 2,
    "no-bitwise": 2,
    "no-continue": 2,
    "no-lonely-if": 2,
    "no-negated-condition": 2,
    "no-nested-ternary": 2,
    "no-new-object": 2,
    "no-plusplus": 2,
    "no-tabs": 2,
    "no-unneeded-ternary": 2,
    "one-var": [2, {"uninitialized": "always", "initialized": "never"}],
    "operator-assignment": [2, "never"],
    "spaced-comment": 2,

    // ECMAScript 6
    "arrow-body-style": 2,
    "no-duplicate-imports": 0,
    "no-useless-computed-key": 2,
    "no-useless-constructor": 2,
    "no-useless-rename": 2,
    "no-var": 2,
    "object-shorthand": 2,
    "prefer-arrow-callback": 2,
    "prefer-const": 2,
    "prefer-destructuring": [2, {"array": false}],
    "prefer-numeric-literals": 2,
    "prefer-rest-params": 2,
    "prefer-spread": 2,
    "prefer-template": 2,
    "sort-imports": 0,
    "symbol-description": 2
  }
}