.eslintrc.js

/* eslint-disable global-require */
module.exports = {
  root: true,
  parser: 'babel-eslint',
  parserOptions: {
    ecmaVersion: 2018,
    sourceType: 'module',
    ecmaFeatures: {
      legacyDecorators: true,
    },
  },
  plugins: ['ember'],
  extends: [
    'eslint:recommended',
    'plugin:ember/recommended',
    'plugin:prettier/recommended',
  ],
  env: {
    browser: true,
  },
  rules: {
    'ember/no-jquery': 'error',
    'prettier/prettier': 'error',
    semi: 0,
    'import/no-extraneous-dependencies': 0,
    'func-names': ['error', 'never'],
    'prefer-const': 2,
    'no-const-assign': 2,
    'no-var': 2,
  },
  overrides: [
    // node files
    {
      files: [
        '.eslintrc.js',
        '.template-lintrc.js',
        'ember-cli-build.js',
        'testem.js',
        'blueprints/*/index.js',
        'config/**/*.js',
        'lib/*/index.js',
        'server/**/*.js',
      ],
      parserOptions: {
        sourceType: 'script',
      },
      env: {
        browser: false,
        node: true,
      },
      plugins: ['node'],
      rules: {
        ...require('eslint-plugin-node').configs.recommended.rules,
        // add your custom rules and overrides for node files here

        // this can be removed once the following is fixed
        // https://github.com/mysticatea/eslint-plugin-node/issues/77
        'node/no-unpublished-require': 'off',
      },
    },
  ],
}