eslint.config.mjs

import stylistic from '@stylistic/eslint-plugin';
import eslint from '@eslint/js';
import tseslint from 'typescript-eslint';

export default tseslint.config(
  {
    extends: [
      eslint.configs.recommended,
      ...tseslint.configs.recommendedTypeChecked,
      stylistic.configs['recommended-flat'],
    ],
    plugins: {
      '@stylistic': stylistic,
    },
    languageOptions: {
      parserOptions: {
        project: true,
        tsconfigRootDir: import.meta.dirname,
      },
    },
  },
  {
    ignores: ['main.js', 'dist/**/*', 'i18n/i18n-*.ts'],
  },
  {
    rules: {
      'no-unused-vars': 'off',
      'no-dupe-class-members': 'off',
      'no-loop-func': 'off',
      'no-shadow': 'off',
      'no-unused-expressions': 'off',
      'no-use-before-define': 'off',
      'no-throw-literal': 'off',
      'prefer-destructuring': 'off',

      '@stylistic/ban-ts-comment': 'off',
      '@stylistic/no-prototype-builtins': 'off',
      '@stylistic/no-empty-function': 'off',
      '@stylistic/semi': ['off'],
      '@stylistic/arrow-parens': ['error', 'as-needed'],
      '@stylistic/array-bracket-newline': 'error',
      '@stylistic/array-element-newline': ['error', 'consistent'],
      '@stylistic/function-call-argument-newline': ['error', 'consistent'],
      '@stylistic/function-call-spacing': ['error', 'never'],
      '@stylistic/generator-star-spacing': ['error', 'before'],
      '@stylistic/max-len': [
        'error',
        {
          code: 120,
          ignoreComments: true,
          ignoreUrls: true,
          ignoreStrings: true,
          ignoreTemplateLiterals: true,
          ignoreRegExpLiterals: true,
          ignoreTrailingComments: true,
        },
      ],
      '@stylistic/linebreak-style': ['error', 'unix'],
      '@stylistic/no-confusing-arrow': 'off',
      '@stylistic/no-extra-semi': 'error',
      '@stylistic/object-curly-newline': [
        'error',
        {
          multiline: true,
          consistent: true,
        },
      ],
      '@stylistic/one-var-declaration-per-line': ['error', 'always'],
      '@stylistic/semi-style': ['error', 'last'],
      '@stylistic/switch-colon-spacing': ['error', { after: true, before: false }],
      '@stylistic/jsx-pascal-case': [
        'error',
        {
          allowAllCaps: false,
          allowLeadingUnderscore: false,
          allowNamespace: true,
        },
      ],
      '@stylistic/jsx-props-no-multi-spaces': 'error',
      '@stylistic/jsx-self-closing-comp': [
        'error',
        {
          component: true,
          html: false,
        },
      ],
      '@stylistic/jsx-sort-props': [
        'error',
        {
          callbacksLast: true,
          shorthandFirst: true,
          multiline: 'first',
          noSortAlphabetically: true,
          reservedFirst: true,
        },
      ],
      '@stylistic/member-delimiter-style': [
        'error',
        {
          multiline: {
            delimiter: 'semi',
            requireLast: true,
          },
          multilineDetection: 'brackets',
          singleline: {
            delimiter: 'semi',
            requireLast: false,
          },
        },
      ],
      '@typescript-eslint/no-floating-promises': 'off',
      '@stylistic/object-property-newline': [
        'error',
        {
          allowAllPropertiesOnSameLine: true,
        },
      ],
      '@stylistic/comma-dangle': 'off',
      '@stylistic/brace-style': 'off',
      '@typescript-eslint/no-unused-vars': ['error', { args: 'none' }],
      '@typescript-eslint/adjacent-overload-signatures': 'error',
      '@typescript-eslint/consistent-indexed-object-style': 'error',
      '@typescript-eslint/consistent-type-assertions': 'off',
      '@typescript-eslint/consistent-type-definitions': 'error',
      '@typescript-eslint/consistent-type-exports': ['error', { fixMixedExportsWithInlineTypeSpecifier: false }],
      '@typescript-eslint/consistent-type-imports': [
        'error',
        {
          prefer: 'type-imports',
          fixStyle: 'separate-type-imports',
          disallowTypeAnnotations: true,
        },
      ],
      '@typescript-eslint/member-ordering': ['warn'],
      '@typescript-eslint/no-array-delete': 'error',
      '@typescript-eslint/no-confusing-non-null-assertion': 'error',
      '@typescript-eslint/no-confusing-void-expression': 'off',
      '@typescript-eslint/no-dupe-class-members': 'error',
      '@typescript-eslint/no-dynamic-delete': 'off',
      '@typescript-eslint/no-empty-interface': 'error',
      '@typescript-eslint/no-empty-object-type': 'error',
      '@typescript-eslint/no-invalid-void-type': 'error',
      '@typescript-eslint/no-loop-func': 'error',
      '@typescript-eslint/no-meaningless-void-operator': 'error',
      '@typescript-eslint/no-mixed-enums': 'error',
      '@typescript-eslint/no-non-null-asserted-nullish-coalescing': 'error',
      '@typescript-eslint/no-require-imports': 'error',
      '@typescript-eslint/no-shadow': [
        'error',
        {
          builtinGlobals: false,
          hoist: 'all',
          allow: [],
          ignoreTypeValueShadow: false,
          ignoreFunctionTypeParameterNameValueShadow: false,
        },
      ],
      '@typescript-eslint/no-unnecessary-boolean-literal-compare': 'error',
      '@typescript-eslint/no-unnecessary-condition': 'error',
      '@typescript-eslint/no-unnecessary-qualifier': 'error',
      '@typescript-eslint/no-unnecessary-template-expression': 'error',
      '@typescript-eslint/no-unused-expressions': [
        'error',
        {
          allowShortCircuit: true,
          allowTernary: true,
          allowTaggedTemplates: true,
        },
      ],
      '@typescript-eslint/no-use-before-define': 'error',
      '@typescript-eslint/no-useless-empty-export': 'error',
      '@typescript-eslint/only-throw-error': 'error',
      '@typescript-eslint/prefer-destructuring': 'error',
      '@typescript-eslint/prefer-enum-initializers': 'error',
      '@typescript-eslint/prefer-find': 'error',
      '@typescript-eslint/prefer-for-of': 'error',
      '@typescript-eslint/prefer-includes': 'error',
      '@typescript-eslint/prefer-namespace-keyword': 'error',
      '@typescript-eslint/prefer-optional-chain': 'error',
      '@typescript-eslint/prefer-reduce-type-parameter': 'error',
      '@typescript-eslint/prefer-string-starts-ends-with': 'error',
      '@typescript-eslint/require-array-sort-compare': 'error',
      '@typescript-eslint/switch-exhaustiveness-check': 'error',
      '@typescript-eslint/unified-signatures': 'error',
    },
  }
);