.eslintrc.js

//based on https://github.com/10gen/mms/blob/master/client/.eslintrc.js
const fs = require('fs');
const path = require('path');

const prettierConfig = JSON.parse(fs.readFileSync(path.join(__dirname, '.prettierrc'), 'utf8'));

module.exports = {
  extends: ['airbnb', 'prettier'],
  // required until class properties is supported by eslint natively.
  parser: 'babel-eslint',
  parserOptions: {
    ecmaVersion: 6,
  },
  plugins: ['class-property', 'prettier'],
  settings: {
    'import/resolver': {
      node: {
        moduleDirectory: ['node_modules', '.'],
      },
    },
  },
  env: {
    browser: true,
    commonjs: true,
    es6: true,
  },
  rules: {
    'arrow-parens': 0,
    'array-bracket-spacing': 1,
    'array-callback-return': 1,
    'arrow-body-style': 0,
    'brace-style': 1,
    camelcase: 1,
    'class-property/class-property-semicolon': ['error', 'always'],
    'comma-dangle': 0,
    'comma-spacing': 1,
    'consistent-return': 1,
    'default-case': 1,
    'prefer-destructuring': 0,
    'dot-location': 1,
    'dot-notation': 1,
    eqeqeq: 1,
    'func-names': 0,
    'global-require': 0,
    'guard-for-in': 1,
    'import/newline-after-import': 0,
    'import/no-extraneous-dependencies': [
      'error',
      {
        devDependencies: ['**/*.story.js', '**/__tests__/**.js'],
      },
    ],
    //indent: [1, 2],
    'jsx-a11y/anchor-is-valid': 0,
    'jsx-a11y/click-events-have-key-events': 0,
    'jsx-a11y/href-no-hash': 0,
    'jsx-a11y/no-autofocus': 0,
    'jsx-a11y/tabindex-no-positive': 0,
    'jsx-a11y/no-static-element-interactions': 0,
    'jsx-a11y/label-has-for': 0,
    'jsx-a11y/no-noninteractive-element-interactions': 0,
    'key-spacing': 1,
    'keyword-spacing': 2,
    'linebreak-style': 0,
    'max-len': [1, { code: 120, ignoreStrings: true }],
    'new-parens': 1,
    'newline-per-chained-call': 1,
    'no-bitwise': 1,
    'no-case-declarations': 2,
    'no-console': 0,
    'no-continue': 0,
    'no-else-return': 1,
    'no-extra-bind': 1,
    'no-extra-boolean-cast': 1,
    'no-inner-declarations': 1,
    'no-lonely-if': 1,
    'no-mixed-operators': 1,
    'no-multi-spaces': 1,
    'no-multi-assign': 1,
    'no-nested-ternary': 1,
    'no-param-reassign': 0,
    'no-restricted-syntax': 1,
    'no-restricted-properties': 1,
    'no-return-assign': 1,
    'no-restricted-modules': [
      2,
      {
        patterns: ['js/common/services/api/*'],
      },
    ],
    'no-shadow': 1,
    'no-template-curly-in-string': 0,
    'no-underscore-dangle': 0,
    'no-unneeded-ternary': 1,
    'no-unused-expressions': [2, { allowShortCircuit: true }],
    'no-use-before-define': 1,
    'no-useless-concat': 1,
    'no-useless-escape': 1,
    'no-var': 1,
    'no-plusplus': 0,
    'object-curly-spacing': 0,
    'object-shorthand': 1,
    'one-var': 1,
    'one-var-declaration-per-line': 1,
    'operator-assignment': 1,
    'padded-blocks': [1, 'never'],
    'prefer-arrow-callback': 1,
    'prefer-arrow-callback': 1,
    'prefer-const': 1,
    'prefer-rest-params': 1,
    'prefer-spread': 1,
    'prefer-template': 1,
    'prefer-template': 1,
    'quote-props': 1,
    radix: 1,
    'space-before-function-paren': [0, 'never'],
    'space-infix-ops': 1,
    'spaced-comment': 1,
    strict: [1, 'safe'],
    'template-curly-spacing': 1,
    'vars-on-top': 0,
    'wrap-iife': 1,
    'prettier/prettier': [2, prettierConfig],
    // Disabled/warnings for prettier support.
    curly: 1,
    'space-in-parens': 1,
  },
};