Use prettier for code formatting

.eslintrc.js

@@ -1,9 +1,6 @@
 module.exports = {
   root: true,
-  extends: [
-    'simplabs',
-    'simplabs/plugins/ember',
-  ],
+  extends: ['simplabs', 'simplabs/plugins/ember', 'plugin:prettier/recommended'],
   rules: {
     'ember/avoid-leaking-state-in-components': 'off',
     'ember/local-modules': 'off',
@@ -21,12 +18,7 @@ module.exports = {
         'config/**/*.js',
         'tests/dummy/config/**/*.js',
       ],
-      excludedFiles: [
-        'addon/**',
-        'addon-test-support/**',
-        'app/**',
-        'tests/dummy/app/**',
-      ],
+      excludedFiles: ['addon/**', 'addon-test-support/**', 'app/**', 'tests/dummy/app/**'],
       parserOptions: {
         sourceType: 'script',
         ecmaVersion: 2015,
@@ -38,12 +30,10 @@ module.exports = {
     },
     // node test files
     {
-      files: [
-        'node-tests/*.js',
-      ],
+      files: ['node-tests/*.js'],
       parserOptions: {
         sourceType: 'script',
-        ecmaVersion: 2015
+        ecmaVersion: 2015,
       },
       env: {
         browser: false,

.prettierrc.js

@@ -0,0 +1,8 @@
+'use strict';
+
+module.exports = {
+  arrowParens: 'avoid',
+  printWidth: 100,
+  singleQuote: true,
+  trailingComma: 'es5',
+};

config/ember-try.js

@@ -4,12 +4,12 @@
 
 const getChannelURL = require('ember-source-channel-url');
 
-module.exports = function() {
+module.exports = function () {
   return Promise.all([
     getChannelURL('release'),
     getChannelURL('beta'),
     getChannelURL('canary'),
-  ]).then((urls) => {
+  ]).then(urls => {
     return {
       usePnpm: true,
       command: 'pnpm test',
@@ -67,33 +67,33 @@ module.exports = function() {
           name: 'ember-release',
           npm: {
             devDependencies: {
-              'ember-source': urls[0]
-            }
-          }
+              'ember-source': urls[0],
+            },
+          },
         },
         {
           name: 'ember-beta',
           npm: {
             devDependencies: {
-              'ember-source': urls[1]
-            }
-          }
+              'ember-source': urls[1],
+            },
+          },
         },
         {
           name: 'ember-canary',
           npm: {
             devDependencies: {
-              'ember-source': urls[2]
-            }
-          }
+              'ember-source': urls[2],
+            },
+          },
         },
         {
           name: 'ember-default',
           npm: {
-            devDependencies: {}
-          }
-        }
-      ]
+            devDependencies: {},
+          },
+        },
+      ],
     };
   });
 };

config/environment.js

@@ -1,6 +1,6 @@
 /* eslint-env node */
 'use strict';
 
-module.exports = function(/* environment, appConfig */) {
-  return { };
+module.exports = function (/* environment, appConfig */) {
+  return {};
 };

config/targets.js

@@ -1,10 +1,5 @@
 /* eslint-env node */
 
 module.exports = {
-  browsers: [
-    'ie 9',
-    'last 1 Chrome versions',
-    'last 1 Firefox versions',
-    'last 1 Safari versions',
-  ],
+  browsers: ['ie 9', 'last 1 Chrome versions', 'last 1 Firefox versions', 'last 1 Safari versions'],
 };

ember-cli-build.js

@@ -4,7 +4,7 @@
 
 const EmberAddon = require('ember-cli/lib/broccoli/ember-addon');
 
-module.exports = function(defaults) {
+module.exports = function (defaults) {
   let stripTestSelectors = process.env['STRIP_TEST_SELECTORS'];
 
   let app = new EmberAddon(defaults, {
@@ -13,8 +13,8 @@ module.exports = function(defaults) {
     },
 
     'ember-test-selectors': {
-      strip: Boolean(stripTestSelectors)
-    }
+      strip: Boolean(stripTestSelectors),
+    },
   });
 
   /*

index.js

@@ -15,20 +15,26 @@ module.exports = {
     let addonOptions = appOptions['ember-test-selectors'] || {};
 
     if (addonOptions.environments) {
-      ui.writeDeprecateLine('The "environments" option in "ember-test-selectors" has been replaced ' +
-        'with the "strip" option. Use e.g. "strip: EmberApp.env() === \'production\'" instead to ' +
-        'recreate the old behavior.', false);
-
-      this._stripTestSelectors = (addonOptions.environments.indexOf(app.env) !== -1);
+      ui.writeDeprecateLine(
+        'The "environments" option in "ember-test-selectors" has been replaced ' +
+          'with the "strip" option. Use e.g. "strip: EmberApp.env() === \'production\'" instead to ' +
+          'recreate the old behavior.',
+        false
+      );
+
+      this._stripTestSelectors = addonOptions.environments.indexOf(app.env) !== -1;
     } else if ('strip' in addonOptions) {
       this._stripTestSelectors = addonOptions.strip;
     } else {
       this._stripTestSelectors = !app.tests;
     }
 
     if ('patchClassicComponent' in addonOptions) {
-      ui.writeDeprecateLine('[ember-test-selectors] The `patchClassicComponent` option is obsolete. ' +
-        'You can remove it from your `ember-cli-build.js` file.', false);
+      ui.writeDeprecateLine(
+        '[ember-test-selectors] The `patchClassicComponent` option is obsolete. ' +
+          'You can remove it from your `ember-cli-build.js` file.',
+        false
+      );
     }
   },
 
@@ -65,10 +71,14 @@ module.exports = {
       if (checker.satisfies('^6.0.0-beta.1') || checker.satisfies('^7.0.0')) {
         appOrParent.options.babel6 = appOrParent.options.babel6 || {};
         appOrParent.options.babel6.plugins = appOrParent.options.babel6.plugins || [];
-        appOrParent.options.babel6.plugins.push(require.resolve('./strip-data-test-properties-plugin6'));
+        appOrParent.options.babel6.plugins.push(
+          require.resolve('./strip-data-test-properties-plugin6')
+        );
       } else {
-        this.ui.writeWarnLine('ember-test-selectors: You are using an unsupported ember-cli-babel version. data-test ' +
-          'properties are not automatically stripped from your JS code.');
+        this.ui.writeWarnLine(
+          'ember-test-selectors: You are using an unsupported ember-cli-babel version. data-test ' +
+            'properties are not automatically stripped from your JS code.'
+        );
       }
 
       this._registeredWithBabel = true;
@@ -88,7 +98,11 @@ module.exports = {
     // remove the unit tests if we're testing ourself and are in strip mode.
     // we do this because these tests depend on the "addon" and "app" folders being available,
     // which is not the case if they are stripped out of the build.
-    if (type === 'test' && this._stripTestSelectors && this.project.name() === 'ember-test-selectors') {
+    if (
+      type === 'test' &&
+      this._stripTestSelectors &&
+      this.project.name() === 'ember-test-selectors'
+    ) {
       tree = require('broccoli-stew').rm(tree, 'dummy/tests/unit/**/*.js');
     }
     return tree;

node-tests/.eslintrc.js

@@ -1,5 +1,5 @@
 module.exports = {
   env: {
-    mocha: true
+    mocha: true,
   },
 };

node-tests/strip-data-test-properties-plugin-test.js

@@ -6,7 +6,7 @@ let babel7 = require('@babel/core');
 let StripDataTestPropertiesPlugin6 = require('../strip-data-test-properties-plugin6');
 
 function testFixture(name) {
-  it(`fixture: ${name}`, function() {
+  it(`fixture: ${name}`, function () {
     let fixturePath = `${__dirname}/fixtures/${name}/fixture.js`;
     let expectedPath = `${__dirname}/fixtures/${name}/expected7.js`;
 
@@ -20,7 +20,6 @@ function testFixture(name) {
   });
 }
 
-describe('StripDataTestProperties plugin', function() {
+describe('StripDataTestProperties plugin', function () {
   testFixture('default');
 });
-

package.json

@@ -48,12 +48,15 @@
     "ember-source-channel-url": "3.0.0",
     "ember-try": "2.0.0",
     "eslint": "8.3.0",
+    "eslint-config-prettier": "8.3.0",
     "eslint-config-simplabs": "0.4.0",
     "eslint-plugin-ember": "10.5.8",
+    "eslint-plugin-prettier": "4.0.0",
     "eslint-plugin-qunit": "7.1.0",
     "lerna-changelog": "2.2.0",
     "loader.js": "4.7.0",
     "mocha": "9.1.3",
+    "prettier": "2.5.0",
     "qunit": "2.17.2",
     "qunit-dom": "2.0.0",
     "release-it": "14.11.8",

strip-data-test-properties-plugin6.js

@@ -18,11 +18,11 @@ function StripDataTestPropertiesPlugin() {
   };
 }
 
-StripDataTestPropertiesPlugin.baseDir = function() {
+StripDataTestPropertiesPlugin.baseDir = function () {
   return __dirname;
 };
 
-StripDataTestPropertiesPlugin.cacheKey = function() {
+StripDataTestPropertiesPlugin.cacheKey = function () {
   return 'ember-test-selectors.strip-data-test-properties';
 };