.eslintrc.js

module.exports = {
  ignorePatterns: ['.eslintrc.js'],
  parserOptions: {
    parser: '@typescript-eslint/parser',
    project: './tsconfig.json',
    tsconfigRootDir: __dirname,
    sourceType: 'module',
    ecmaVersion: 2021,
  },
  plugins: ['@typescript-eslint', 'prettier', 'import', 'unused-imports'], // Merged plugins from both files
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/recommended',
    // TODO: Extend from these configurations once upgrading to typescript-eslint v6+
    //'plugin:@typescript-eslint/recommended-type-checked',
    //'plugin:@typescript-eslint/stylistic-type-checked',
    'plugin:prettier/recommended',
    'plugin:import/recommended',
    'plugin:import/typescript',
  ],
  rules: {
    '@typescript-eslint/interface-name-prefix': 'off',
    '@typescript-eslint/explicit-function-return-type': 'off',
    '@typescript-eslint/explicit-module-boundary-types': 'off',
    '@typescript-eslint/no-explicit-any': 'off',
    '@typescript-eslint/no-inferrable-types': 'off',
    'no-unused-vars': 'off',
    '@typescript-eslint/no-unused-vars': [
      'warn',
      {
        argsIgnorePattern: '^_',
        varsIgnorePattern: '^_',
        caughtErrorsIgnorePattern: '^_',
        ignoreRestSiblings: true,
      },
    ],
    '@typescript-eslint/lines-between-class-members': [
      'warn',
      'always',
      { exceptAfterSingleLine: true },
    ],
    'padding-line-between-statements': 'off',
    '@typescript-eslint/padding-line-between-statements': [
      'warn',
      { blankLine: 'any', prev: 'import', next: '*' }, // handled by sort-imports
      { blankLine: 'any', prev: '*', next: 'singleline-const' },
      { blankLine: 'any', prev: '*', next: 'singleline-let' },
      { blankLine: 'any', prev: '*', next: 'singleline-var' },
      { blankLine: 'always', prev: '*', next: 'block-like' },
      { blankLine: 'always', prev: '*', next: 'multiline-block-like' },
      { blankLine: 'always', prev: '*', next: 'multiline-expression' },
      { blankLine: 'always', prev: '*', next: 'multiline-const' },
      { blankLine: 'always', prev: '*', next: 'multiline-let' },
      { blankLine: 'always', prev: '*', next: 'multiline-var' },
      { blankLine: 'always', prev: '*', next: 'export' },
      { blankLine: 'always', prev: 'block-like', next: '*' },
      { blankLine: 'always', prev: 'multiline-block-like', next: '*' },
      { blankLine: 'always', prev: 'multiline-expression', next: '*' },
      { blankLine: 'always', prev: 'multiline-const', next: '*' },
      { blankLine: 'always', prev: 'multiline-let', next: '*' },
      { blankLine: 'always', prev: 'multiline-var', next: '*' },
    ],
    'prettier/prettier': [
      'warn',
      {
        endOfLine: 'auto',
        trailingComma: 'all',
      },
    ],
    'unused-imports/no-unused-imports': 'warn',
    'sort-imports': [
      'warn',
      {
        ignoreCase: false,
        ignoreDeclarationSort: true,
        ignoreMemberSort: false,
        memberSyntaxSortOrder: ['none', 'all', 'multiple', 'single'],
        allowSeparatedGroups: false,
      },
    ],
    'import/no-unresolved': 'error',
    'import/newline-after-import': 'warn',
    'import/order': [
      'warn',
      {
        groups: [
          'builtin',
          'external',
          'internal',
          ['sibling', 'parent'],
          'index',
          'unknown',
        ],
        'newlines-between': 'always',
        alphabetize: {
          order: 'asc',
          caseInsensitive: true,
        },
      },
    ],
  },
  settings: {
    'import/resolver': {
      typescript: {},
      node: {
        extensions: ['.js', '.jsx', '.ts', '.tsx'],
        moduleDirectory: ['node_modules', 'src/'],
      },
    },
  },
};