old_contents: module.exports = {
    root: true,
    parserOptions: {
      ecmaVersion: 2017,
      sourceType: "module"
    },
    plugins: ["ember"],
    extends: [
      "eslint:recommended",
      "plugin:ember/recommended",
      "plugin:prettier/recommended"
    ],
    env: {
      browser: true
    },
    rules: {
      "prettier/prettier": 2,
      "ember/new-module-imports": 2
    },
    overrides: [
      // node files
      {
        files: [
          "index.js",
          "testem.js",
          "ember-cli-build.js",
          "config/**/*.js",
          "tests/dummy/config/**/*.js",
          "blueprints/**/*.js"
        ],
        excludedFiles: ["app/**", "addon/**", "tests/dummy/app/**"],
        parserOptions: {
          sourceType: "script",
          ecmaVersion: 2015
        },
        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,
    parserOptions: {
      ecmaVersion: 2017,
      sourceType: "module"
    },
    plugins: ["ember", "prettier"],
    extends: [
      "eslint:recommended",
      "plugin:ember/recommended",
      "plugin:prettier/recommended"
    ],
    env: {
      browser: true
    },
    rules: {
      "prettier/prettier": 2,
      "ember/new-module-imports": 2
    },
    overrides: [
      // node files
      {
        files: [
          "index.js",
          "testem.js",
          "ember-cli-build.js",
          "config/**/*.js",
          "tests/dummy/config/**/*.js",
          "blueprints/**/*.js"
        ],
        excludedFiles: ["app/**", "addon/**", "tests/dummy/app/**"],
        parserOptions: {
          sourceType: "script",
          ecmaVersion: 2015
        },
        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: Add prettier as eslint plugin