.eslintrc

{
  'parser': 'babel-eslint',

  'env': {
    'es6': true,
    'react-native/react-native': true,
  },

  'plugins': [
    'react',
    'react-native'
  ],

  'extends': [
    'eslint:recommended',
    'plugin:react/recommended',
  ],

  'settings': {
    'react': {
      'version': '16.9',
    },
  },

  'rules': {
    'no-unused-vars': ['error', {
      'vars': 'all',
      'args': 'none',
      'ignoreRestSiblings': true,
    }],

    'no-console': ['error'],

    /*
     * let foo = [1];
     * let bar = [
     *   1,
     * ];
     */
    'array-bracket-newline': ['error', 'consistent'],

    /*
     * let foo = [1, 2, 3];
     */
    'array-bracket-spacing': ['error', 'never'],

    /*
     * if (foo) { bar() }
     */
    'block-spacing': ['error', 'always'],

    /*
     * if (foo) {
     *   bar();
     * } else {
     *   baz();
     * }
     */
    'brace-style': ['error', '1tbs', { 'allowSingleLine': true }],

    /*
     * let foo = [
     *   1,
     * ];
     */
    'comma-dangle': ['error', 'always-multiline'],

    /*
     * let foo = [1, 2];
     */
    'comma-spacing': ['error', { 'before': false, 'after': true }],

    /*
     * let foo,
     *   bar,
     *   baz;
     */
    'comma-style': ['error', 'last'],

    /*
     * let foo = bar[bar];
     */
    'computed-property-spacing': ['error', 'never'],

    /*
     * let that = this;
     */
    'consistent-this': ['error', 'that'],

    /*
     * call();
     */
    'func-call-spacing': ['error', 'never'],

    /*
     * function bar() { 1; }
     * let bar = () => 1;
     */
    'func-style': ['error', 'declaration', { 'allowArrowFunctions': true }],

    /*
     * foo(1);
     * bar(
     *   2, 3
     * );
     */
    'function-paren-newline': ['error', 'consistent'],

    /*
     * () => 1;
     */
    'implicit-arrow-linebreak': ['error', 'beside'],

    /*
     * [
     *   1
     * ]
     */
    'indent': ['warn', 2, { 'SwitchCase': 1 }],

    /*
     * <View name='foo' />
     */
    'jsx-quotes': ['error', 'prefer-single'],

    /*
     * let foo = { bar: true };
     */
    'key-spacing': ['error', { 'beforeColon': false, 'afterColon': true }],

    /*
     * if (foo) { return; }
     */
    'keyword-spacing': ['error', { 'before': true, 'after': true }],

    'linebreak-style': ['error', 'unix'],

    'lines-between-class-members': ['error', 'always'],

    'max-len': ['warn', { 'code': 100, 'ignoreTrailingComments': true }],

    /*
     * foo(1, 2, 3, 4, 5);
     */
    'max-params': ['error', { 'max': 6 }],

    'max-statements-per-line': ['error', { 'max': 1 }],

    'new-parens': ['error'],

    'no-trailing-spaces': ['error'],

    'no-whitespace-before-property': ['error'],

    /*
     * let foo = { bar, baz };
     */
    'object-curly-newline': ['error', { 'consistent': true }],
    'object-curly-spacing': ['error', 'always'],
    'object-property-newline': ['error', { 'allowAllPropertiesOnSameLine': true }],

    /*
     * let foo = 'bar'
     *   + 'baz';
     */
    'operator-linebreak': ['error', 'before', { 'overrides': { '?': 'after', ':': 'after' } }],

    /*
     * 'bar'
     */
    'quotes': ['warn', 'single'],

    /*
     * 1;
     */
    'semi': ['warn', 'always'],
    'semi-spacing': ['error', { 'before': false, 'after': true }],
    'semi-style': ['error', 'last'],

    /*
     * () => {
     * };
     */
    'space-before-blocks': ['error', 'always'],

    /*
     * foo(1, 2, 3);
     */
    'space-before-function-paren': ['error', {
      'anonymous': 'always',
      'named': 'never',
      'asyncArrow': 'always',
    }],

    /*
     * foo('bar');
     */
    'space-in-parens': ['error', 'never'],

    /*
     * switch (a) {
     *   case 0: break;
     * }
     */
    'switch-colon-spacing': ['error', { 'after': true, 'before': false }],

    'react-native/no-unused-styles': ['warn'],
    'react-native/no-inline-styles': ['warn'],
  },
}

/* vim: set ft=javascript : */