.eslintrc.js

module.exports = {
  settings: {
    react: {
      pragma: 'React', // Pragma to use, default to "React"
      version: 'detect', // React version. "detect"
    },
  },
  env: { es6: true, browser: true },
  extends: [
    'prettier',
    'plugin:@typescript-eslint/recommended',
    'plugin:@typescript-eslint/recommended-requiring-type-checking',
    'plugin:react/recommended',
  ],
  parser: '@typescript-eslint/parser',
  parserOptions: { project: 'tsconfig.json', sourceType: 'module' },
  plugins: [
    '@typescript-eslint',
    '@typescript-eslint/tslint',
    'eslint-plugin-import',
    'eslint-plugin-prefer-arrow',
    'prettier',
    'react',
  ],
  rules: {
    'prettier/prettier': 'error',
    '@typescript-eslint/adjacent-overload-signatures': 'error',
    '@typescript-eslint/array-type': 'off',
    '@typescript-eslint/await-thenable': 'error',
    '@typescript-eslint/ban-types': 'error',
    '@typescript-eslint/class-name-casing': 'error',
    '@typescript-eslint/consistent-type-assertions': 'error',
    '@typescript-eslint/consistent-type-definitions': 'error',
    '@typescript-eslint/explicit-function-return-type': 'off',
    '@typescript-eslint/explicit-member-accessibility': ['off', { accessibility: 'explicit' }],
    '@typescript-eslint/indent': 'off',
    '@typescript-eslint/interface-name-prefix': 'off',
    '@typescript-eslint/member-delimiter-style': [
      'error',
      { multiline: { delimiter: 'none', requireLast: true }, singleline: { delimiter: 'semi', requireLast: false } },
    ],
    '@typescript-eslint/member-ordering': 'off',
    '@typescript-eslint/no-empty-function': 'error',
    '@typescript-eslint/no-empty-interface': 'off',
    '@typescript-eslint/no-explicit-any': 'off',
    '@typescript-eslint/no-floating-promises': 'error',
    '@typescript-eslint/no-for-in-array': 'error',
    '@typescript-eslint/no-inferrable-types': 'error',
    '@typescript-eslint/no-misused-new': 'error',
    '@typescript-eslint/no-namespace': 'off',
    '@typescript-eslint/no-non-null-assertion': 'off',
    '@typescript-eslint/no-parameter-properties': 'off',
    '@typescript-eslint/no-unnecessary-qualifier': 'error',
    '@typescript-eslint/no-unnecessary-type-assertion': 'off',
    '@typescript-eslint/no-use-before-define': 'off',
    '@typescript-eslint/no-var-requires': 'off',
    '@typescript-eslint/prefer-for-of': 'error',
    '@typescript-eslint/prefer-function-type': 'error',
    '@typescript-eslint/prefer-namespace-keyword': 'off',
    '@typescript-eslint/prefer-regexp-exec': 'error',
    '@typescript-eslint/no-this-alias': 'off', // D3 needs this, see LineChart
    '@typescript-eslint/camelcase': 'off', // Apollo codegen creates FetchInbox_task, etc
    '@typescript-eslint/quotes': ['error', 'single', { avoidEscape: true }],
    '@typescript-eslint/semi': ['off', null],
    '@typescript-eslint/space-within-parens': ['off', 'never'],
    '@typescript-eslint/triple-slash-reference': 'error',
    '@typescript-eslint/type-annotation-spacing': 'off',
    '@typescript-eslint/unbound-method': 'error',
    '@typescript-eslint/unified-signatures': 'error',
    'arrow-body-style': 'error',
    'arrow-parens': ['error', 'as-needed'],
    'comma-dangle': 'off',
    complexity: 'off',
    'constructor-super': 'error',
    curly: 'error',
    'dot-notation': 'error',
    'eol-last': 'error',
    eqeqeq: ['error', 'always', { null: 'ignore' }],
    'guard-for-in': 'error',
    'id-blacklist': ['error', 'any', 'number', 'string', 'boolean', 'Undefined'],
    'id-match': 'error',
    'import/no-deprecated': 'error',
    'import/order': ['error', {'alphabetize': {'order': 'asc', 'caseInsensitive': false}}],
    'linebreak-style': 'off',
    'max-classes-per-file': 'off',
    'max-len': 'off',
    'new-parens': 'error',
    'newline-per-chained-call': 'off',
    'no-bitwise': 'off',
    'no-caller': 'error',
    'no-cond-assign': 'off',
    'no-console': 'off',
    'no-debugger': 'error',
    'no-empty': 'error',
    'no-eval': 'error',
    'no-extra-semi': 'off',
    'no-fallthrough': 'off',
    'no-invalid-this': 'off',
    'no-irregular-whitespace': 'error',
    'no-magic-numbers': 'off',
    'no-multiple-empty-lines': ['error', { max: 1 }],
    'no-new-wrappers': 'error',
    'no-redeclare': 'error',
    'no-shadow': ['off', { hoist: 'all' }],
    'no-sparse-arrays': 'error',
    'no-template-curly-in-string': 'error',
    'no-throw-literal': 'error',
    'no-trailing-spaces': 'error',
    'no-undef-init': 'error',
    'no-underscore-dangle': ['error', { enforceInMethodNames: true }],
    'no-unsafe-finally': 'error',
    'no-unused-expressions': 'error',
    'no-unused-labels': 'error',
    'no-var': 'error',
    'no-void': 'off',
    'object-shorthand': 'error',
    'one-var': ['error', 'never'],
    'prefer-arrow/prefer-arrow-functions': 'off',
    'prefer-const': ['error', { destructuring: 'all' }],
    'prefer-template': 'off',
    'quote-props': ['error', 'as-needed'],
    radix: 'error',
    'space-before-function-paren': ['error', { anonymous: 'always', asyncArrow: 'always', named: 'never' }],
    'spaced-comment': 'error',
    'use-isnan': 'error',
    'valid-typeof': 'off',
    '@typescript-eslint/tslint/config': [
      'error',
      {
        rules: {
          'import-spacing': true,
          'jsdoc-format': true,
          'no-boolean-literal-compare': true,
          'no-inferred-empty-object-type': true,
          'no-reference-import': true,
          'number-literal-format': true,
          'return-undefined': true,
          typedef: true,
        },
      },
    ],
    'react/jsx-no-bind': 'error',
    'react/no-find-dom-node': 'off',
    'react/no-string-refs': 'error',
    'react/no-unescaped-entities': 'off', // otherwise <div>How's it going?<div> errors
  },
}