.eslintrc.js

module.exports = {
  root: true,
  env: {
    browser: true,
    es6: true,
  },
  ignorePatterns: ['dist', 'coverage'],
  extends: ['plugin:prettier/recommended'],
  parser: '@babel/eslint-parser',
  parserOptions: {
    es6: true,
    ecmaVersion: 6,
    sourceType: 'module',
    requireConfigFile: false,
  },
  plugins: [
    'eslint-plugin-import',
    'eslint-plugin-jsdoc',
    'eslint-plugin-prefer-arrow',
    '@typescript-eslint',
  ],
  overrides: [
    {
      files: ['**/*.ts'],
      parser: '@typescript-eslint/parser',
      parserOptions: {
        project: './packages/**/tsconfig.json',
        sourceType: 'module',
        allowAutomaticSingleRunInference: true,
      },
      rules: {
        '@typescript-eslint/adjacent-overload-signatures': 'error',
        '@typescript-eslint/array-type': 'off',
        '@typescript-eslint/ban-types': 'off',
        '@typescript-eslint/consistent-type-assertions': 'error',
        '@typescript-eslint/dot-notation': 'off',
        '@typescript-eslint/indent': 'off',
        '@typescript-eslint/member-delimiter-style': [
          'off',
          {
            multiline: {
              delimiter: 'none',
              requireLast: true,
            },
            singleline: {
              delimiter: 'semi',
              requireLast: false,
            },
          },
        ],
        '@typescript-eslint/member-ordering': 'off',
        '@typescript-eslint/naming-convention': 'off',
        '@typescript-eslint/no-empty-function': 'error',
        '@typescript-eslint/no-empty-interface': 'off',
        '@typescript-eslint/no-explicit-any': 'off',
        '@typescript-eslint/no-misused-new': 'error',
        '@typescript-eslint/no-namespace': 'error',
        '@typescript-eslint/no-parameter-properties': 'off',
        '@typescript-eslint/no-shadow': [
          'error',
          {
            hoist: 'all',
          },
        ],
        '@typescript-eslint/no-this-alias': 'error',
        '@typescript-eslint/no-unused-expressions': 'off',
        '@typescript-eslint/no-use-before-define': 'off',
        '@typescript-eslint/no-var-requires': 'error',
        '@typescript-eslint/prefer-for-of': 'error',
        '@typescript-eslint/prefer-function-type': 'error',
        '@typescript-eslint/prefer-namespace-keyword': 'error',
        '@typescript-eslint/quotes': 'off',
        '@typescript-eslint/semi': ['off', null],
        '@typescript-eslint/triple-slash-reference': [
          'error',
          {
            path: 'always',
            types: 'prefer-import',
            lib: 'always',
          },
        ],
        '@typescript-eslint/type-annotation-spacing': 'off',
        '@typescript-eslint/unified-signatures': 'error',
        '@typescript-eslint/no-unused-vars': 'error',
      },
    },
  ],
  rules: {
    'prettier/prettier': 'warn',
    'arrow-parens': ['off', 'always'],
    'brace-style': ['off', 'off'],
    'comma-dangle': 'off',
    complexity: 'off',
    'constructor-super': 'error',
    curly: 'error',
    'dot-notation': 'off',
    'eol-last': 'off',
    eqeqeq: ['error', 'smart'],
    'guard-for-in': 'error',
    'id-blacklist': 'off',
    'id-match': 'off',
    'import/no-extraneous-dependencies': ['error'],
    'import/no-internal-modules': 'off',
    'import/order': [
      'error',
      {
        groups: ['builtin', 'external', 'internal'],
        'newlines-between': 'always',
      },
    ],
    indent: 'off',
    'jsdoc/check-alignment': 'error',
    'jsdoc/check-indentation': 'error',
    'linebreak-style': 'off',
    'max-classes-per-file': 'off',
    'max-len': 'off',
    'new-parens': 'off',
    'newline-per-chained-call': 'off',
    'no-bitwise': 'off',
    'no-caller': 'error',
    'no-cond-assign': 'error',
    'no-console': 'off',
    'no-debugger': 'error',
    'no-duplicate-case': 'error',
    'no-duplicate-imports': 'error',
    'no-empty': 'error',
    'no-eval': 'error',
    'no-extra-bind': 'error',
    'no-extra-semi': 'off',
    'no-fallthrough': 'off',
    'no-invalid-this': 'off',
    'no-irregular-whitespace': 'off',
    'no-multiple-empty-lines': 'off',
    'no-new-func': 'error',
    'no-new-wrappers': 'error',
    'no-redeclare': 'error',
    'no-return-await': 'error',
    'no-sequences': 'error',
    'no-sparse-arrays': 'error',
    'no-template-curly-in-string': 'error',
    'no-throw-literal': 'error',
    'no-trailing-spaces': 'off',
    'no-undef-init': 'error',
    'no-underscore-dangle': 'off',
    'no-unsafe-finally': 'error',
    'no-unused-expressions': 'off',
    'no-unused-labels': 'error',
    'no-use-before-define': 'off',
    'no-var': 'error',
    'object-shorthand': 'error',
    'one-var': ['error', 'never'],
    'padded-blocks': [
      'off',
      {
        blocks: 'never',
      },
      {
        allowSingleLineBlocks: true,
      },
    ],
    'prefer-arrow/prefer-arrow-functions': 'error',
    'prefer-const': 'error',
    'prefer-object-spread': 'error',
    'quote-props': 'off',
    quotes: 'off',
    radix: 'error',
    'react/jsx-curly-spacing': 'off',
    'react/jsx-equals-spacing': 'off',
    'react/jsx-tag-spacing': [
      'off',
      {
        afterOpening: 'allow',
        closingSlash: 'allow',
      },
    ],
    'react/jsx-wrap-multilines': 'off',
    semi: 'off',
    'space-before-blocks': 'error',
    'space-before-function-paren': 'off',
    'space-in-parens': ['off', 'never'],
    'unicorn/prefer-ternary': 'off',
    'use-isnan': 'error',
    'valid-typeof': 'off',
  },
}