.eslintrc.js

module.exports = {
  root: true,
  parser: 'babel-eslint',
  parserOptions: {
    ecmaVersion: 2017,
    sourceType: 'module',
  },
  plugins: ['ember'],
  extends: ['eslint:recommended', 'plugin:ember/recommended'],
  env: {
    browser: true,
  },
  rules: {
    'ember/routes-segments-snake-case': 0,
    'no-debugger': 0,
    'no-console': 0,
    'no-unused-vars': 0,
  },
  overrides: [
    // node files
    {
      files: [
        '.ember-cli.js',
        '.eslintrc.js',
        'prod-server.js',
        'server/**/*.js',
        '.template-lintrc.js',
        'ember-cli-build.js',
        'testem.js',
        'blueprints/*/index.js',
        'config/**/*.js',
        'lib/*/index.js',
      ],
      excludedFiles: ['app/**'],
      parserOptions: {
        sourceType: 'script',
        ecmaVersion: 2015,
      },
      env: {
        browser: false,
        node: true,
      },
      plugins: ['node'],
      rules: Object.assign(
        {},
        // eslint-disable-next-line node/no-unpublished-require
        require('eslint-plugin-node').configs.recommended.rules,
        {
          // add your custom rules and overrides for node files here
        }
      ),
    },
  ],
};