.eslintrc.js

const OFF = 0;
const WARN = 1;
const ERROR = 2;

module.exports = {
  plugins: ['react', 'jsx-a11y', 'react-hooks', 'jest', 'monorepo'],
  extends: ['eslint:recommended'],
  parser: 'babel-eslint',
  parserOptions: {
    ecmaFeatures: {
      'legacyDecorators': true
    },
    sourceType: 'module'
  },
  overrides: [{
    files: ['packages/**/*.ts', 'packages/**/*.tsx'],
    plugins: ['react', 'jsx-a11y', 'react-hooks', 'jest', '@typescript-eslint', 'monorepo', 'jsdoc'],
    parser: '@typescript-eslint/parser',
    parserOptions: {
      ecmaFeatures: {
        'jsx': true,
        'legacyDecorators': true
      },
      'useJSXTextNode': true,
      'project': './tsconfig.json',
      sourceType: 'module'
    },
    rules: {
      'no-unused-vars': OFF,
      '@typescript-eslint/no-unused-vars': ERROR,
      '@typescript-eslint/member-delimiter-style': [ERROR, {
        multiline: {
          delimiter: 'comma',
          requireLast: false
        },
        singleline: {
          delimiter: 'comma',
          requireLast: false
        }
      }]
    }
  }, {
    files: ['**/test/**', '**/stories/**', '**/docs/**', '**/chromatic/**'],
    rules: {
      'monorepo/no-internal-import': OFF,
      'jsdoc/require-jsdoc': OFF
    }
  }],
  env: {
    'browser': true,
    'node': true,
    'mocha': true,
    'es6': true,
    'jest': true
  },
  globals: {
    'jest': true,
    'expect': true
  },
  settings: {
    jsdoc: {
      ignorePrivate: true,
      publicFunctionsOnly: true
    }
  },
  rules: {
    'jsdoc/require-description-complete-sentence': [ERROR, {abbreviations: ['e.g', 'etc']}],
    'jsdoc/check-alignment': ERROR,
    'jsdoc/check-indentation': ERROR,
    'jsdoc/check-tag-names': ERROR,
    // enable this rule to see literally everything missing jsdocs, this rule needs some refinement but is good as a sanity check.
    // 'jsdoc/require-jsdoc': [ERROR, {contexts:['TSInterfaceDeclaration TSPropertySignature', 'TSInterfaceDeclaration TSMethodSignature']}],
    'jsdoc/require-description': [ERROR, {exemptedBy: ['deprecated'], checkConstructors: false}],
    'comma-dangle': ERROR,
    'indent': OFF,
    'indent-legacy': [ERROR, ERROR, {SwitchCase: 1}],
    'quotes': [ERROR, 'single', 'avoid-escape'],
    'linebreak-style': [ERROR, 'unix'],
    'semi': [ERROR, 'always'],
    'space-before-function-paren': [ERROR, {anonymous: 'always', named: 'never', asyncArrow: 'ignore'}],
    'keyword-spacing': [ERROR, {after: true}],
    'jsx-quotes': [ERROR, 'prefer-double'],
    'brace-style': [ERROR, '1tbs', {allowSingleLine: true}],
    'object-curly-spacing': [ERROR, 'never'],
    'curly': ERROR,
    'no-fallthrough': OFF,
    'comma-spacing': ERROR,
    'comma-style': [ERROR, 'last'],
    'no-irregular-whitespace': [ERROR],
    'eqeqeq': [ERROR, 'smart'],
    'no-spaced-func': ERROR,
    'array-bracket-spacing': [ERROR, 'never'],
    'key-spacing': [ERROR, {beforeColon: false, afterColon: true}],
    'no-console': OFF,
    'no-unused-vars': [ERROR, {args: 'none', vars: 'all', varsIgnorePattern: '[rR]eact'}],
    'space-in-parens': [ERROR, 'never'],
    'space-unary-ops': [ERROR, {words: true, nonwords: false}],
    'spaced-comment': [ERROR, 'always', {exceptions: ['*'], markers: ['/']}],
    'max-depth': [WARN, 4],
    'radix': [ERROR, 'always'],
    'react/jsx-uses-react': WARN,
    'eol-last': ERROR,
    'arrow-body-style': [ERROR, 'as-needed'],
    'arrow-spacing': ERROR,
    'space-before-blocks': [ERROR, 'always'],
    'space-infix-ops': ERROR,
    'no-new-wrappers': ERROR,
    'no-self-compare': ERROR,
    'no-nested-ternary': ERROR,
    'no-multiple-empty-lines': ERROR,
    'no-unneeded-ternary': ERROR,

    // hooks
    'react-hooks/rules-of-hooks': ERROR,
    'react-hooks/exhaustive-deps': WARN,

    // importing rules
    'monorepo/no-relative-import': ERROR
  }
};