eslint.config.mjs

import { readFileSync } from 'node:fs';
import { createRequire } from 'node:module';

import eslint from '@eslint/js';
import tsParser from '@typescript-eslint/parser';
import eslintConfigPrettier from 'eslint-config-prettier';
import importX from 'eslint-plugin-import-x';
import react from 'eslint-plugin-react';
import reactHooks from 'eslint-plugin-react-hooks';
import simpleImportSort from 'eslint-plugin-simple-import-sort';
import sonarjs from 'eslint-plugin-sonarjs';
import unicorn from 'eslint-plugin-unicorn';
import tseslint from 'typescript-eslint';

const __require = createRequire(import.meta.url);

const rxjs = __require('@smarttools/eslint-plugin-rxjs');

const ignoreList = readFileSync('.prettierignore', 'utf-8')
  .split('\n')
  .filter(line => line.trim() && !line.startsWith('#'));

export default tseslint.config(
  {
    ignores: ignoreList,
  },
  {
    settings: {
      react: {
        version: 'detect',
      },
    },
    languageOptions: {
      parser: tsParser,
      ecmaVersion: 'latest',
      parserOptions: {
        project: './tsconfig.eslint.json',
        tsconfigRootDir: import.meta.dirname,
      },
    },
  },
  {
    plugins: {
      '@typescript-eslint': tseslint.plugin,
      react,
      'react-hooks': reactHooks,
      sonarjs,
      'import-x': importX,
      'simple-import-sort': simpleImportSort,
      rxjs,
      unicorn,
    },
    rules: {
      ...eslint.configs.recommended.rules,
      ...react.configs.recommended.rules,
      ...react.configs['jsx-runtime'].rules,
      ...reactHooks.configs.recommended.rules,
      // covered by TypeScript
      'no-dupe-args': 'off',
      // the following rules are disabled because they are covered by oxlint
      'array-callback-return': 'off',
      'constructor-super': 'off',
      eqeqeq: 'off',
      'getter-return': 'off',
      'for-direction': 'off',
      'require-yield': 'off',
      'use-isnan': 'off',
      'valid-typeof': 'off',
      'no-self-compare': 'off',
      'no-empty': 'off',
      'no-constant-binary-expression': 'off',
      'no-constructor-return': 'off',
      'no-func-assign': 'off',
      'no-global-assign': 'off',
      'no-ex-assign': 'off',
      'no-fallthrough': 'off',
      'no-irregular-whitespace': 'off',
      'no-control-regex': 'off',
      'no-with': 'off',
      'no-debugger': 'off',
      'no-const-assign': 'off',
      'no-import-assign': 'off',
      'no-setter-return': 'off',
      'no-obj-calls': 'off',
      'no-unsafe-negation': 'off',
      'no-dupe-class-members': 'off',
      'no-dupe-keys': 'off',
      'no-this-before-super': 'off',
      'no-empty-character-class': 'off',
      'no-useless-catch': 'off',
      'no-async-promise-executor': 'off',
      'no-unreachable': 'off',
      'no-duplicate-case': 'off',
      'no-empty-pattern': 'off',
      'no-unused-labels': 'off',
      'no-sparse-arrays': 'off',
      'no-delete-var': 'off',
      'no-compare-neg-zero': 'off',
      'no-redeclare': 'off',
      'no-case-declarations': 'off',
      'no-class-assign': 'off',
      'no-var': 'off',
      'no-self-assign': 'off',
      'no-inner-declarations': 'off',
      'no-dupe-else-if': 'off',
      'no-invalid-regexp': 'off',
      'no-unsafe-finally': 'off',
      'no-prototype-builtins': 'off',
      'no-shadow-restricted-names': 'off',
      'no-nonoctal-decimal-escape': 'off',
      'no-constant-condition': 'off',
      'no-useless-escape': 'off',
      'no-unsafe-optional-chaining': 'off',
      'no-extra-boolean-cast': 'off',
      'no-regex-spaces': 'off',
      'no-unused-vars': 'off',
      'no-undef': 'off',
      'no-cond-assign': 'off',
      'react/jsx-no-useless-fragment': 'off',
      'react/no-unknown-property': 'off',
      'react/no-string-refs': 'off',
      'react/no-direct-mutation-state': 'off',
      'react/require-render-return': 'off',
      'react/jsx-no-undef': 'off',
      'react/jsx-no-duplicate-props': 'off',
      'react/jsx-key': 'off',
      'react/no-danger-with-children': 'off',
      'react/no-unescaped-entities': 'off',
      'react/no-is-mounted': 'off',
      'react/no-find-dom-node': 'off',
      'react/no-children-prop': 'off',
      'react/no-render-return-value': 'off',
      'react/jsx-no-target-blank': 'off',
      'react/jsx-no-comment-textnodes': 'off',
      'react/prop-types': 'off',
      'sonarjs/no-useless-catch': 'off',
      '@typescript-eslint/consistent-type-imports': 'off',
      '@typescript-eslint/no-unused-vars': 'off',
      '@typescript-eslint/no-non-null-assertion': 'off',
      '@typescript-eslint/no-loss-of-precision': 'off',
      '@typescript-eslint/ban-ts-comment': 'off',
      '@typescript-eslint/triple-slash-reference': 'off',
      '@typescript-eslint/no-non-null-asserted-optional-chain': 'off',
      '@typescript-eslint/no-duplicate-enum-values': 'off',
      '@typescript-eslint/no-extra-non-null-assertion': 'off',
      '@typescript-eslint/no-misused-new': 'off',
      '@typescript-eslint/prefer-for-of': 'error',
      '@typescript-eslint/no-unsafe-declaration-merging': 'off',
      '@typescript-eslint/no-this-alias': 'off',
      '@typescript-eslint/prefer-as-const': 'off',
      '@typescript-eslint/no-var-requires': 'off',
      '@typescript-eslint/no-namespace': 'off',
      '@typescript-eslint/no-unnecessary-type-constraint': 'off',
      '@typescript-eslint/no-array-constructor': 'off',
      '@typescript-eslint/no-explicit-any': 'off',
      '@typescript-eslint/no-empty-function': 'off',

      // rules that are not supported by oxlint
      '@typescript-eslint/no-unsafe-function-type': 'error',
      '@typescript-eslint/no-wrapper-object-types': 'error',
      '@typescript-eslint/unified-signatures': 'error',
      '@typescript-eslint/no-restricted-imports': [
        'error',
        {
          patterns: [
            {
              group: ['**/dist'],
              message: "Don't import from dist",
              allowTypeImports: false,
            },
            {
              group: ['**/src'],
              message: "Don't import from src",
              allowTypeImports: false,
            },
            {
              group: ['@blocksuite/store'],
              message: "Import from '@blocksuite/global/utils'",
              importNames: ['assertExists', 'assertEquals'],
            },
          ],
        },
      ],
      'sonarjs/no-all-duplicated-branches': 'error',
      'sonarjs/no-element-overwrite': 'error',
      'sonarjs/no-empty-collection': 'error',
      'sonarjs/no-extra-arguments': 'error',
      'sonarjs/no-identical-conditions': 'error',
      'sonarjs/no-identical-expressions': 'error',
      'sonarjs/no-ignored-return': 'error',
      'sonarjs/no-one-iteration-loop': 'error',
      'sonarjs/no-use-of-empty-return-value': 'error',
      'sonarjs/non-existent-operator': 'error',
      'sonarjs/no-collapsible-if': 'error',
      'sonarjs/no-same-line-conditional': 'error',
      'sonarjs/no-duplicated-branches': 'error',
      'sonarjs/no-collection-size-mischeck': 'error',
      'sonarjs/no-identical-functions': 'error',
      'sonarjs/no-gratuitous-expressions': 'error',

      'simple-import-sort/imports': 'error',
      'simple-import-sort/exports': 'error',
    },
  },
  {
    files: [
      'packages/**/*.{ts,tsx}',
      'tools/**/*.{ts,tsx}',
      'blocksuite/**/*.{ts,tsx}',
    ],
    rules: {
      '@typescript-eslint/no-floating-promises': [
        'error',
        {
          ignoreVoid: false,
          ignoreIIFE: false,
        },
      ],
      '@typescript-eslint/await-thenable': 'error',
      '@typescript-eslint/require-array-sort-compare': 'error',
      '@typescript-eslint/no-misused-promises': ['error'],
      '@typescript-eslint/prefer-readonly': 'error',
      'import-x/no-extraneous-dependencies': ['error'],
      'react-hooks/exhaustive-deps': [
        'warn',
        {
          additionalHooks:
            '(useAsyncCallback|useCatchEventCallback|useDraggable|useDropTarget|useRefEffect)',
        },
      ],
      'rxjs/finnish': [
        'error',
        {
          functions: false,
          methods: false,
          strict: true,

          types: {
            '^LiveData$': true,
            '^Doc$': false,
            '^Awareness$': false,
            '^UndoManager$': false,
          },
        },
      ],
    },
  },
  {
    files: [
      '**/__tests__/**/*',
      '**/*.stories.tsx',
      '**/*.spec.ts',
      '**/tests/**/*',
      'scripts/**/*',
      '**/benchmark/**/*',
      '**/__debug__/**/*',
      '**/e2e/**/*',
    ],
    rules: {
      '@typescript-eslint/no-floating-promises': 0,
      '@typescript-eslint/no-misused-promises': 0,
      '@typescript-eslint/no-restricted-imports': 0,
    },
  },
  {
    files: ['**/*.{ts,js,mjs}'],
    rules: {
      'react-hooks/rules-of-hooks': 'off',
    },
  },
  {
    files: ['packages/frontend/apps/electron/scripts/**/*'],
    rules: {
      'import-x/no-extraneous-dependencies': 'off',
    },
  },
  {
    files: ['blocksuite/**/*.{ts,tsx}'],
    rules: {
      'rxjs/finnish': 'off',
    },
  },
  {
    files: [
      'blocksuite/tests-legacy/**/*.{ts,tsx}',
      'blocksuite/**/__tests__/**/*.{ts,tsx}',
    ],
    rules: {
      'import-x/no-extraneous-dependencies': 'off',
    },
  },
  eslintConfigPrettier
);