old_contents: module.exports = {
    root: true,
    parser: 'babel-eslint',
    parserOptions: {
      ecmaVersion: 2018,
      sourceType: 'module',
      ecmaFeatures: {
        legacyDecorators: true,
      },
    },
    plugins: ['ember'],
    extends: ['eslint:recommended', 'plugin:ember/recommended'],
    env: {
      browser: true,
    },
    rules: {
      'ember/no-jquery': 'error',
    },
    rules: {},
    overrides: [
      // node files
      {
        files: [
          '.eslintrc.js',
          '.template-lintrc.js',
          'ember-cli-build.js',
          'index.js',
          'testem.js',
          'blueprints/*/index.js',
          'config/**/*.js',
          'tests/dummy/config/**/*.js',
        ],
        excludedFiles: ['addon/**', 'addon-test-support/**', 'app/**', 'tests/dummy/app/**'],
        parserOptions: {
          sourceType: 'script',
        },
        env: {
          browser: false,
          node: true,
        },
        plugins: ['node'],
        rules: Object.assign({}, require('eslint-plugin-node').configs.recommended.rules, {
          // add your custom rules and overrides for node files here
        }),
      },
    ],
  }
  
new_contents: module.exports = {
    root: true,
    parser: 'babel-eslint',
    parserOptions: {
      ecmaVersion: 2018,
      sourceType: 'module',
      ecmaFeatures: {
        legacyDecorators: true,
      },
    },
    plugins: ['ember'],
    extends: ['eslint:recommended', 'plugin:ember/recommended'],
    env: {
      browser: true,
    },
    rules: {
      'ember/no-jquery': 'error',
    },
    overrides: [
      // node files
      {
        files: [
          '.eslintrc.js',
          '.template-lintrc.js',
          'ember-cli-build.js',
          'index.js',
          'testem.js',
          'blueprints/*/index.js',
          'config/**/*.js',
          'tests/dummy/config/**/*.js',
        ],
        excludedFiles: ['addon/**', 'addon-test-support/**', 'app/**', 'tests/dummy/app/**'],
        parserOptions: {
          sourceType: 'script',
        },
        env: {
          browser: false,
          node: true,
        },
        plugins: ['node'],
        rules: Object.assign({}, require('eslint-plugin-node').configs.recommended.rules, {
          // add your custom rules and overrides for node files here
        }),
      },
    ],
  }
  
subject: remove duplicate key in eslintrc