js/.eslint.config.mjs at main · mitranim/js · GitHub

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export default [
  {
    languageOptions: {
      ecmaVersion: 2022,
      sourceType: `module`,
      globals: {
        console: `readonly`,
        performance: `readonly`,
        crypto: `readonly`,
        queueMicrotask: `readonly`,
        setTimeout: `readonly`,
        clearTimeout: `readonly`,
        setInterval: `readonly`,
        clearInterval: `readonly`,
        fetch: `readonly`,
        URL: `readonly`,
        URLSearchParams: `readonly`,
        Request: `readonly`,
        Response: `readonly`,
        Headers: `readonly`,
        AbortController: `readonly`,
        AbortSignal: `readonly`,
        Blob: `readonly`,
        File: `readonly`,
        Intl: `readonly`,
        TextDecoder: `readonly`,
        TextEncoder: `readonly`,
        ReadableStream: `readonly`,
        Event: `readonly`,
        EventTarget: `readonly`,
        CustomEvent: `readonly`,
        FormData: `readonly`,
      },
    },
    rules: {
      [`no-restricted-globals`]: [`error`,
        // window (browser)
        `alert`, `blur`, `confirm`, `event`, `find`, `focus`, `history`,
        `length`, `location`, `name`, `open`, `parent`, `print`,
        `prompt`, `scroll`, `self`, `status`, `stop`, `top`,
        // global (node)
        `root`,
        /* other */
        `test`,
        /* These global functions are broken */
        `isNaN`, `isFinite`,
      ],

      [`consistent-return`]: `error`,
      [`constructor-super`]: `error`,
      [`eqeqeq`]: [`error`, `always`, {null: `never`}],
      [`for-direction`]: `error`,
      [`no-async-promise-executor`]: `error`,
      [`no-case-declarations`]: `error`,
      [`no-class-assign`]: `error`,
      [`no-compare-neg-zero`]: `error`,
      [`no-cond-assign`]: `error`,
      [`no-const-assign`]: `error`,
      [`no-constant-condition`]: `error`,
      [`no-control-regex`]: `error`,
      [`no-debugger`]: `error`,
      [`no-delete-var`]: `error`,
      [`no-dupe-args`]: `error`,
      [`no-dupe-class-members`]: `error`,
      [`no-dupe-else-if`]: `error`,
      [`no-dupe-keys`]: `error`,
      [`no-duplicate-case`]: `error`,
      [`no-empty`]: [`error`, {allowEmptyCatch: true}],
      [`no-empty-character-class`]: `error`,
      [`no-empty-pattern`]: `error`,
      [`no-ex-assign`]: `error`,
      [`no-extra-boolean-cast`]: `error`,
      [`no-extra-semi`]: `error`,
      [`no-fallthrough`]: `error`,
      [`no-func-assign`]: `error`,
      [`no-global-assign`]: `error`,
      [`no-import-assign`]: `error`,
      [`no-inner-declarations`]: `error`,
      [`no-invalid-regexp`]: `error`,
      [`no-irregular-whitespace`]: `error`,
      [`no-misleading-character-class`]: `error`,
      [`no-mixed-spaces-and-tabs`]: `error`,
      [`no-new-symbol`]: `error`,
      [`no-obj-calls`]: `error`,
      [`no-octal`]: `error`,
      [`no-prototype-builtins`]: `error`,
      [`no-redeclare`]: `error`,
      [`no-regex-spaces`]: `error`,
      [`no-self-assign`]: `error`,
      [`no-setter-return`]: `error`,
      [`no-shadow-restricted-names`]: `error`,
      [`no-sparse-arrays`]: `error`,
      [`no-this-before-super`]: `error`,
      [`no-undef`]: `error`,
      [`no-unexpected-multiline`]: `error`,
      [`no-unreachable`]: `error`,
      [`no-unsafe-finally`]: `error`,
      [`no-unsafe-negation`]: `error`,
      [`no-unused-expressions`]: `error`,
      [`no-unused-labels`]: `error`,
      [`no-unused-vars`]: [`error`, {
        args: `all`,
        argsIgnorePattern: `^_`,
        varsIgnorePattern: `^_`,
      }],
      [`no-useless-catch`]: `error`,
      [`no-useless-escape`]: `error`,
      [`no-warning-comments`]: [`error`, {location: `anywhere`, terms: [`F`+`I`+`X`+`M`+`E`]}],
      [`no-with`]: `error`,
      [`object-curly-spacing`]: [`error`, `never`],
      [`require-yield`]: `error`,
      [`semi`]: [`error`, `never`],
      [`use-isnan`]: `error`,
      [`valid-typeof`]: `error`,

      // Doesn't work properly.
      // [`quotes`]: [`error`, `backtick`],

      /*
      There used to be a time and place for this rule. However, it can also lead
      to pitfalls. There are cases when separating a context object from a method
      is correct and useful, and enforcing "no this" can lead to mistakes, such
      as accidentally closuring an object which is meant to be referenced weakly
      via `WeakRef`.
      */
      // [`no-invalid-this`]: [`error`, {capIsConstructor: false}],
    },
  },
  {
    files: [`test/*.mjs`, `doc/*.mjs`],
    languageOptions: {ecmaVersion: 2026},
  },
]