eslint.config.mjs

import eslint from '@eslint/js';
import markdown from '@eslint/markdown';
import globals from 'globals';
import tseslint from 'typescript-eslint';

export default [
  // Global ignores
  {
    ignores: [
      'todo.md',
      'dist',
      'node_modules',
      '**/.yarn',
      '**/.pnp.*',
      '**/.vscode',
    ],
  },

  // Markdown code-blocks linting
  ...markdown.configs.processor,

  // Typescript linting
  ...tseslint.config(
    eslint.configs.recommended,
    ...tseslint.configs.recommended,
  ),

  // Configuration files
  {
    files: [
      '*.js' // applies to top-level files only
    ],
    languageOptions: {
      globals: {
        ...globals.node,
      }
    }
  },

  // Custom rules
  {
    linterOptions: {
      reportUnusedDisableDirectives: "error"
    },

    rules: {
      '@typescript-eslint/interface-name-prefix': 'off',
      '@typescript-eslint/explicit-function-return-type': 'off',
      '@typescript-eslint/explicit-module-boundary-types': 'off',

      'no-duplicate-imports': 'error',
      'no-self-compare': 'error',
      'no-template-curly-in-string': 'error',

      'camelcase': 'error',
      'curly': 'error',
      'default-case': 'error',
      'default-case-last': 'error',
      'default-param-last': 'error',
      'eqeqeq': 'error',
      'max-depth': ['error', 4],
      'max-nested-callbacks': ['error', 5],
      'no-bitwise': 'error',
      'no-empty-static-block': 'error',
      'no-eq-null': 'error',
      'no-eval': 'error',
      'no-extend-native': 'error',
      'no-extra-label': 'error',
      'no-implicit-coercion': 'error',
      'no-implicit-globals': 'error',
      'no-implied-eval': 'error',
      'no-invalid-this': 'error',
      'no-iterator': 'error',
      'no-label-var': 'error',
      'no-lone-blocks': 'error',
      'no-lonely-if': 'error',
      'no-loop-func': 'error',
      'no-negated-condition': 'error',
      'no-new': 'error',
      'no-new-func': 'error',
      'no-new-wrappers': 'error',
      'no-octal-escape': 'error',
      'no-param-reassign': 'error',
      'no-proto': 'error',
      'no-return-assign': 'error',
      'no-script-url': 'error',
      'no-sequences': 'error',
      'no-throw-literal': 'error',
      'no-undef-init': 'error',
      'no-unneeded-ternary': 'error',
      'no-unused-expressions': 'error',
      'no-useless-computed-key': 'error',
      'no-useless-concat': 'error',
      'no-useless-rename': 'error',
      'no-useless-return': 'error',
      'no-var': 'error',
      'no-void': 'error',
      'object-shorthand': ['error', 'always'],
      'one-var': ['error', 'never'],
      'operator-assignment': ['error', 'always'],
      'prefer-arrow-callback': 'error',
      'prefer-const': 'error',
      'prefer-object-has-own': 'error',
      'prefer-object-spread': 'error',
      'prefer-promise-reject-errors': 'error',
      'prefer-rest-params': 'error',
      'prefer-spread': 'error',
      'prefer-template': 'error',
      'radix': 'error',
      'require-await': 'error',
      'strict': 'error',
      'symbol-description': 'error',
      'yoda': 'error',
    },
  },
];