.eslintrc.js

// This is the primary JavaScript linting rules for the entire
// project.  In a few places, some of these rules are extended
// or overridden for a particular subset of the project.  See
// other .eslintrc.js files for those rules.
module.exports = {
  globals: {
    Phaser: true,
    PIXI: true,
  },
  plugins: [],
  extends: ['eslint:recommended'],
  env: {
    browser: true,
    node: true,
    es6: true,
  },
  parserOptions: {
    sourceType: 'module',
    ecmaVersion: 2017,
    ecmaFeatures: {
      jsx: true,
      modules: true,
      ecmaVersion: 6,
      experimentalObjectRestSpread: true,
    },
  },
  rules: {
    'array-bracket-spacing': ['error', 'never'],
    'brace-style': ['error', '1tbs', {allowSingleLine: true}],
    'comma-dangle': 'off',
    curly: 'error',
    'dot-location': ['error', 'property'],
    'eol-last': 'error',
    eqeqeq: 'error',
    'jsx-quotes': 'error', // autofixable
    'keyword-spacing': 'error',
    indent: ['error', 2, {SwitchCase: 1}],
    'no-array-constructor': 'error',
    'no-console': 'off',
    'no-duplicate-imports': 'error',
    'no-empty': 'off',
    'no-eval': 'error',
    'no-extra-boolean-cast': 'off',
    'no-implicit-globals': 'error',
    'no-new-object': 'error',
    'no-trailing-spaces': 'error',
    'no-undef': 'error',
    'no-unused-vars': 'error',
    'no-with': 'error',
    'object-curly-spacing': 'off',
    semi: 'error',
    'space-before-function-paren': [
      'error',
      {
        anonymous: 'always',
        named: 'never',
      },
    ],
    strict: 'error',
  },
};