Merge "CheckerQuery: Make returned lists immutable"
diff --git a/.eslintrc.json b/.eslintrc.json
new file mode 100644
index 0000000..8066d26
--- /dev/null
+++ b/.eslintrc.json
@@ -0,0 +1,101 @@
+{
+  "extends": ["eslint:recommended", "google"],
+  "parserOptions": {
+    "ecmaVersion": 8
+  },
+  "env": {
+    "browser": true,
+    "es6": true
+  },
+  "globals": {
+    "__dirname": false,
+    "app": false,
+    "page": false,
+    "Polymer": false,
+    "process": false,
+    "require": false,
+    "Gerrit": false,
+    "Promise": false,
+    "assert": false,
+    "test": false,
+    "flushAsynchronousOperations": false
+  },
+  "rules": {
+    "arrow-parens": ["error", "as-needed"],
+    "block-spacing": ["error", "always"],
+    "brace-style": ["error", "1tbs", { "allowSingleLine": true }],
+    "camelcase": "off",
+    "comma-dangle": ["error", {
+      "arrays": "always-multiline",
+      "objects": "always-multiline",
+      "imports": "always-multiline",
+      "exports": "always-multiline",
+      "functions": "never"
+    }],
+    "eol-last": "off",
+    "indent": ["error", 2, {
+      "MemberExpression": 2,
+      "FunctionDeclaration": {"body": 1, "parameters": 2},
+      "FunctionExpression": {"body": 1, "parameters": 2},
+      "CallExpression": {"arguments": 2 },
+      "ArrayExpression": 1,
+      "ObjectExpression": 1,
+      "SwitchCase": 1
+    }],
+    "keyword-spacing": ["error", { "after": true, "before": true }],
+    "lines-between-class-members": ["error", "always"],
+    "max-len": [
+      "error",
+      80,
+      2,
+      {"ignoreComments": true}
+    ],
+    "new-cap": ["error", { "capIsNewExceptions": ["Polymer", "LegacyElementMixin", "GestureEventListeners", "LegacyDataMixin"] }],
+    "no-console": "off",
+    "no-multiple-empty-lines": [ "error", { "max": 1 } ],
+    "no-prototype-builtins": "off",
+    "no-redeclare": "off",
+    "no-restricted-syntax": [
+      "error",
+      {
+        "selector": "ExpressionStatement > CallExpression > MemberExpression[object.name='test'][property.name='only']",
+        "message": "Remove test.only."
+      },
+      {
+        "selector": "ExpressionStatement > CallExpression > MemberExpression[object.name='suite'][property.name='only']",
+        "message": "Remove suite.only."
+      }
+    ],
+    "no-undef": "off",
+    "no-useless-escape": "off",
+    "no-var": "error",
+    "object-shorthand": ["error", "always"],
+    "padding-line-between-statements": [
+      "error",
+      {
+        "blankLine": "always",
+        "prev": "class",
+        "next": "*"
+      },
+      {
+        "blankLine": "always",
+        "prev": "*",
+        "next": "class"
+      }
+    ],
+    "prefer-arrow-callback": "error",
+    "prefer-const": "error",
+    "prefer-spread": "error",
+    "quote-props": ["error", "consistent-as-needed"],
+    "require-jsdoc": "off",
+    "semi": [2, "always"],
+    "template-curly-spacing": "error",
+    "valid-jsdoc": "off"
+  },
+  "plugins": [
+    "html"
+  ],
+  "settings": {
+    "html/report-bad-indent": "error"
+  }
+}
diff --git a/gr-checks/externs.js b/gr-checks/externs.js
index f14959b..e193ad1 100644
--- a/gr-checks/externs.js
+++ b/gr-checks/externs.js
@@ -3,4 +3,4 @@
  * @externs
  */
 
-function moment() {};
+function moment() {}
diff --git a/gr-checks/gr-checkers-list.js b/gr-checks/gr-checkers-list.js
index b07b861..04dd3f1 100644
--- a/gr-checks/gr-checkers-list.js
+++ b/gr-checks/gr-checkers-list.js
@@ -1,7 +1,7 @@
 (function() {
   'use strict';
   const CHECKERS_PER_PAGE = 15;
-  const GET_CHECKERS_URL = "/plugins/checks/checkers/";
+  const GET_CHECKERS_URL = '/plugins/checks/checkers/';
 
   /**
    * Show a list of all checkers along with creating/editing them
@@ -40,17 +40,17 @@
       },
       _startingIndex: {
         type: Number,
-        value: 0
+        value: 0,
       },
       _showNextButton: {
         type: Boolean,
         value: true,
-        computed: '_computeShowNextButton(_startingIndex, _filteredCheckers)'
+        computed: '_computeShowNextButton(_startingIndex, _filteredCheckers)',
       },
       _showPrevButton: {
         type: Boolean,
         value: true,
-        computed: '_computeShowPrevButton(_startingIndex, _filteredCheckers)'
+        computed: '_computeShowPrevButton(_startingIndex, _filteredCheckers)',
       },
     },
     observers: [
@@ -66,14 +66,14 @@
        */
       if (Polymer.FlattenedNodesObserver) {
         this._checkersListObserver = new Polymer.FlattenedNodesObserver(
-          this.$.listBody, () => {
-            this.$.listOverlay.refit();
-          });
+            this.$.listBody, () => {
+              this.$.listOverlay.refit();
+            });
       } else {
         this._checkersListObserver = Polymer.dom(this.$.listBody).observeNodes(
-          () => {
-            this.$.listOverlay.refit();
-          });
+            () => {
+              this.$.listOverlay.refit();
+            });
       }
     },
 
@@ -87,10 +87,10 @@
 
     _showConfigureOverlay() {
       this.$.listOverlay.open().then(
-        () => {
-          this._getCheckers();
-        }
-      )
+          () => {
+            this._getCheckers();
+          }
+      );
     },
 
     _showCheckers(_checkers, _filter) {
@@ -99,7 +99,7 @@
       // TODO(dhruvsri): highlight matching part
       this._filteredCheckers = this._checkers.filter(checker =>
         this._contains(checker.name, this._filter) ||
-        this._contains(checker.repository, this._filter))
+        this._contains(checker.repository, this._filter));
       this._startingIndex = 0;
     },
 
@@ -112,7 +112,7 @@
         return [];
       }
       return this._filteredCheckers.slice(this._startingIndex,
-        this._startingIndex + CHECKERS_PER_PAGE);
+          this._startingIndex + CHECKERS_PER_PAGE);
     },
 
     _computeShowNextButton(_startingIndex, _filteredCheckers) {
@@ -132,7 +132,7 @@
     _handleNextClicked() {
       if (this._startingIndex + CHECKERS_PER_PAGE <
         this._filteredCheckers.length) {
-          this._startingIndex += CHECKERS_PER_PAGE;
+        this._startingIndex += CHECKERS_PER_PAGE;
       }
     },
 
@@ -157,7 +157,7 @@
     },
 
     _handleEditIconClicked(e) {
-      let checker = e.model.item;
+      const checker = e.model.item;
       this.checker = checker;
       this.$.editOverlay.open();
     },
@@ -175,7 +175,7 @@
 
     _computeBlocking(checker) {
       return (checker && checker.blocking && checker.blocking.length > 0)
-        ? "YES": "NO";
+        ? 'YES': 'NO';
     },
 
     _handleCreateConfirm() {
@@ -193,5 +193,5 @@
       this.$.createOverlay.close();
     },
 
-  })
+  });
 })();
\ No newline at end of file
diff --git a/gr-checks/gr-checkers-list_test.html b/gr-checks/gr-checkers-list_test.html
index 6b5e0ad..177e37e 100644
--- a/gr-checks/gr-checkers-list_test.html
+++ b/gr-checks/gr-checkers-list_test.html
@@ -20,172 +20,171 @@
 <script>
   const CHECKERS = [
     {
-        "uuid":"C:D",
-        "name":"A",
-        "description":"B",
-        "repository":"Backend",
-        "status":"ENABLED",
-        "blocking":[
+      uuid: 'C:D',
+      name: 'A',
+      description: 'B',
+      repository: 'Backend',
+      status: 'ENABLED',
+      blocking: [
 
-        ],
-        "query":"status:open",
-        "created":"2019-07-25 13:08:43.000000000",
-        "updated":"2019-07-25 13:08:43.000000000"
+      ],
+      query: 'status:open',
+      created: '2019-07-25 13:08:43.000000000',
+      updated: '2019-07-25 13:08:43.000000000',
     },
     {
-        "uuid":"aa:bb",
-        "name":"n1",
-        "description":"d1",
-        "repository":"All-Users",
-        "status":"ENABLED",
-        "blocking":[
+      uuid: 'aa:bb',
+      name: 'n1',
+      description: 'd1',
+      repository: 'All-Users',
+      status: 'ENABLED',
+      blocking: [
 
-        ],
-        "query":"status:open",
-        "created":"2019-07-29 13:07:17.000000000",
-        "updated":"2019-07-29 13:07:17.000000000"
+      ],
+      query: 'status:open',
+      created: '2019-07-29 13:07:17.000000000',
+      updated: '2019-07-29 13:07:17.000000000',
     },
     {
-        "uuid":"adsf:asdasdas",
-        "name":"ds",
-        "description":"s",
-        "repository":"Scripts",
-        "status":"ENABLED",
-        "blocking":[
+      uuid: 'adsf:asdasdas',
+      name: 'ds',
+      description: 's',
+      repository: 'Scripts',
+      status: 'ENABLED',
+      blocking: [
 
-        ],
-        "query":"status:open",
-        "created":"2019-07-29 13:28:09.000000000",
-        "updated":"2019-07-29 13:28:09.000000000"
+      ],
+      query: 'status:open',
+      created: '2019-07-29 13:28:09.000000000',
+      updated: '2019-07-29 13:28:09.000000000',
     },
     {
-        "uuid":"ijkl:mnop",
-        "name":"abcd",
-        "description":"efgh",
-        "repository":"All-Projects",
-        "status":"ENABLED",
-        "blocking":[
+      uuid: 'ijkl:mnop',
+      name: 'abcd',
+      description: 'efgh',
+      repository: 'All-Projects',
+      status: 'ENABLED',
+      blocking: [
 
-        ],
-        "query":"status:open",
-        "created":"2019-07-29 09:33:25.000000000",
-        "updated":"2019-07-29 09:33:25.000000000"
+      ],
+      query: 'status:open',
+      created: '2019-07-29 09:33:25.000000000',
+      updated: '2019-07-29 09:33:25.000000000',
     },
     {
-        "uuid":"ngfnf:mhghgnhghn",
-        "name":"nbvfg",
-        "description":"fjhgj",
-        "repository":"All-Users",
-        "status":"ENABLED",
-        "blocking":[
+      uuid: 'ngfnf:mhghgnhghn',
+      name: 'nbvfg',
+      description: 'fjhgj',
+      repository: 'All-Users',
+      status: 'ENABLED',
+      blocking: [
 
-        ],
-        "query":"status:open",
-        "created":"2019-08-06 14:21:34.000000000",
-        "updated":"2019-08-06 14:21:34.000000000"
+      ],
+      query: 'status:open',
+      created: '2019-08-06 14:21:34.000000000',
+      updated: '2019-08-06 14:21:34.000000000',
     },
     {
-        "uuid":"sdfsdf--:sdfsdf333",
-        "name":"sdfsdf",
-        "description":"sdfsdfsd",
-        "repository":"Scripts",
-        "status":"ENABLED",
-        "blocking":[
+      uuid: 'sdfsdf--:sdfsdf333',
+      name: 'sdfsdf',
+      description: 'sdfsdfsd',
+      repository: 'Scripts',
+      status: 'ENABLED',
+      blocking: [
 
-        ],
-        "query":"status:open",
-        "created":"2019-07-30 13:00:19.000000000",
-        "updated":"2019-07-30 13:00:19.000000000"
-    },
-    {  
-        "uuid":"test:checker1",
-        "name":"Unit Tests",
-        "description":"Random description that should be improved at some point",
-        "repository":"Backend",
-        "status":"ENABLED",
-        "blocking":[
-
-        ],
-        "query":"status:open",
-        "created":"2019-07-22 13:16:52.000000000",
-        "updated":"2019-07-22 14:21:14.000000000"
+      ],
+      query: 'status:open',
+      created: '2019-07-30 13:00:19.000000000',
+      updated: '2019-07-30 13:00:19.000000000',
     },
     {
-        "uuid":"test:checker2",
-        "name":"Code Style",
-        "repository":"Backend",
-        "status":"ENABLED",
-        "blocking":[
+      uuid: 'test:checker1',
+      name: 'Unit Tests',
+      description: 'Random description that should be improved at some point',
+      repository: 'Backend',
+      status: 'ENABLED',
+      blocking: [
 
-        ],
-        "query":"status:open",
-        "created":"2019-07-22 13:26:56.000000000",
-        "updated":"2019-07-22 13:26:56.000000000"
+      ],
+      query: 'status:open',
+      created: '2019-07-22 13:16:52.000000000',
+      updated: '2019-07-22 14:21:14.000000000',
     },
     {
-        "uuid":"xddf:sdfsdfsdf",
-        "name":"sdfsdf",
-        "description":"sdfsdf",
-        "repository":"Scripts",
-        "status":"ENABLED",
-        "blocking":[
+      uuid: 'test:checker2',
+      name: 'Code Style',
+      repository: 'Backend',
+      status: 'ENABLED',
+      blocking: [
 
-        ],
-        "query":"status:open",
-        "created":"2019-07-29 14:11:59.000000000",
-        "updated":"2019-07-29 14:11:59.000000000"
+      ],
+      query: 'status:open',
+      created: '2019-07-22 13:26:56.000000000',
+      updated: '2019-07-22 13:26:56.000000000',
     },
     {
-        "uuid":"zxczxc:bnvnbvnbvn",
-        "name":"zxc",
-        "description":"zxc",
-        "repository":"Scripts",
-        "status":"ENABLED",
-        "blocking":[
+      uuid: 'xddf:sdfsdfsdf',
+      name: 'sdfsdf',
+      description: 'sdfsdf',
+      repository: 'Scripts',
+      status: 'ENABLED',
+      blocking: [
 
-        ],
-        "query":"status:open",
-        "created":"2019-07-29 14:00:24.000000000",
-        "updated":"2019-07-29 14:00:24.000000000"
+      ],
+      query: 'status:open',
+      created: '2019-07-29 14:11:59.000000000',
+      updated: '2019-07-29 14:11:59.000000000',
     },
     {
-        "uuid":"zxczxc:sdfsdf",
-        "name":"zxc",
-        "description":"zxc",
-        "repository":"Scripts",
-        "status":"ENABLED",
-        "blocking":[
+      uuid: 'zxczxc:bnvnbvnbvn',
+      name: 'zxc',
+      description: 'zxc',
+      repository: 'Scripts',
+      status: 'ENABLED',
+      blocking: [
 
-        ],
-        "query":"status:open",
-        "created":"2019-07-29 13:30:47.000000000",
-        "updated":"2019-07-29 13:30:47.000000000"
-    }
+      ],
+      query: 'status:open',
+      created: '2019-07-29 14:00:24.000000000',
+      updated: '2019-07-29 14:00:24.000000000',
+    },
+    {
+      uuid: 'zxczxc:sdfsdf',
+      name: 'zxc',
+      description: 'zxc',
+      repository: 'Scripts',
+      status: 'ENABLED',
+      blocking: [
+
+      ],
+      query: 'status:open',
+      created: '2019-07-29 13:30:47.000000000',
+      updated: '2019-07-29 13:30:47.000000000',
+    },
   ];
 </script>
 
 <script>
-
   suite('gr-checkers-list tests', () => {
     let element;
     let sandbox;
-    let fetchJSONSpy, fetchJSONPromise, fetchJSONResolve;
+    let fetchJSONSpy; let fetchJSONResolve;
 
-    setup((done) => {
+    setup(done => {
       sandbox = sinon.sandbox.create();
 
       fetchJSONSpy = sinon.stub();
       const fetchJSONPromise = new Promise((resolve, reject) => {
-      fetchJSONResolve = resolve;
-      })
-      fetchJSONSpy.returns(fetchJSONPromise)
+        fetchJSONResolve = resolve;
+      });
+      fetchJSONSpy.returns(fetchJSONPromise);
 
       const pluginRestApi = {
         fetchJSON: fetchJSONSpy,
       };
 
       element = fixture('basic', {
-        pluginRestApi
+        pluginRestApi,
       });
       flush(done);
     });
@@ -193,12 +192,12 @@
     teardown(() => { sandbox.restore(); });
 
     test('renders checker list table headings', () => {
-      const checkersList = element.$$('table')
+      const checkersList = element.$$('table');
       const headings = checkersList.firstElementChild.firstElementChild.
-                        children;
-      const expectedHeadings = ["Checker Name", "Repository", "Status",
-        "Required", "Checker Description", "Edit"];
-      for (let i = 0;i < headings.length;i++) {
+          children;
+      const expectedHeadings = ['Checker Name', 'Repository', 'Status',
+        'Required', 'Checker Description', 'Edit'];
+      for (let i = 0; i < headings.length; i++) {
         assert(headings[i].innerText === expectedHeadings[i]);
       }
     });
@@ -206,39 +205,38 @@
     test('create checker button renders', () => {
       assert(element.querySelector('#createNewContainer'));
       const button = element.querySelector('#createNewContainer')
-                            .querySelector('gr-button');
+          .querySelector('gr-button');
       assert(button);
       assert(button.innerText === 'Create New');
     });
 
     suite('with checkers', () => {
-      setup((done) => {
+      setup(done => {
         fetchJSONResolve(CHECKERS);
         flush(done);
-      })
+      });
       test('renders correct number of checkers', () => {
         const checkers = element.$$('table > tbody:nth-child(2)')
-                                .querySelectorAll('tr');
+            .querySelectorAll('tr');
         assert(checkers.length === CHECKERS.length);
-      })
+      });
       test('renders correct checkers', () => {
         const checkers = element.$$('table > tbody:nth-child(2)')
-                                .querySelectorAll('tr');
-        for (let i = 0;i < checkers.length;i++) {
+            .querySelectorAll('tr');
+        for (let i = 0; i < checkers.length; i++) {
           const checkerDetails = checkers[i].querySelectorAll('td');
           assert(CHECKERS[i].name === checkerDetails[0].innerText);
           assert(CHECKERS[i].repository === checkerDetails[1].innerText);
-          const status = CHECKERS[i].status || "NO";
+          const status = CHECKERS[i].status || 'NO';
           assert(status === checkerDetails[2].innerText);
-          const checkerRequired = (CHECKERS[i].blocking && 
+          const checkerRequired = (CHECKERS[i].blocking &&
                                    CHECKERS[i].blocking.length > 0)
-                                   ? "YES": "NO";
+            ? 'YES': 'NO';
           assert(checkerRequired === checkerDetails[3].innerText);
           const description = CHECKERS[i].description || '';
           assert(description === checkerDetails[4].innerText);
         }
-      })
+      });
     });
-
   });
 </script>
diff --git a/gr-checks/gr-checks-all-statuses.js b/gr-checks/gr-checks-all-statuses.js
index c4be5bc..cf07732 100644
--- a/gr-checks/gr-checks-all-statuses.js
+++ b/gr-checks/gr-checks-all-statuses.js
@@ -18,7 +18,7 @@
     FAILED: 'FAILED',
     NOT_RELEVANT: 'NOT_RELEVANT',
 
-    STATUS_UNKNOWN: 'UNKNOWN'
+    STATUS_UNKNOWN: 'UNKNOWN',
   };
 
   function isStatus(status, includedStatuses) {
diff --git a/gr-checks/gr-checks-change-list-header-view.js b/gr-checks/gr-checks-change-list-header-view.js
index ee3b994..74b8161 100644
--- a/gr-checks/gr-checks-change-list-header-view.js
+++ b/gr-checks/gr-checks-change-list-header-view.js
@@ -1,5 +1,5 @@
 (function() {
-'use strict';
+  'use strict';
 
   Polymer({
     is: 'gr-checks-change-list-header-view',
diff --git a/gr-checks/gr-checks-change-list-header-view_test.html b/gr-checks/gr-checks-change-list-header-view_test.html
index b6aa3be..5724fb7 100644
--- a/gr-checks/gr-checks-change-list-header-view_test.html
+++ b/gr-checks/gr-checks-change-list-header-view_test.html
@@ -15,15 +15,13 @@
 </test-fixture>
 
 <script>
-
   suite('gr-checks-change-list-header-view tests', () => {
     let element;
     let sandbox;
 
-    setup((done) => {
+    setup(done => {
       sandbox = sinon.sandbox.create();
 
-
       element = fixture('basic');
       flush(done);
     });
diff --git a/gr-checks/gr-checks-change-list-item-cell-view.js b/gr-checks/gr-checks-change-list-item-cell-view.js
index 65be586..8cf55a2 100644
--- a/gr-checks/gr-checks-change-list-item-cell-view.js
+++ b/gr-checks/gr-checks-change-list-item-cell-view.js
@@ -1,5 +1,5 @@
 (function() {
-'use strict';
+  'use strict';
 
   Polymer({
     is: 'gr-checks-change-list-item-cell-view',
diff --git a/gr-checks/gr-checks-change-list-item-cell-view_test.html b/gr-checks/gr-checks-change-list-item-cell-view_test.html
index 24d5f6b..f01b7d1 100644
--- a/gr-checks/gr-checks-change-list-item-cell-view_test.html
+++ b/gr-checks/gr-checks-change-list-item-cell-view_test.html
@@ -15,22 +15,20 @@
 </test-fixture>
 
 <script>
-
   suite('gr-checks-change-list-item-cell-view tests', () => {
     let element;
     let sandbox;
 
-    setup((done) => {
+    setup(done => {
       sandbox = sinon.sandbox.create();
 
-
       element = fixture('basic', {
         change: {
-          'project': 'test-repository',
-          'revisions': {
-            'first-sha': "test-revision",
-            'second-sha': "test-revision2",
-          }
+          project: 'test-repository',
+          revisions: {
+            'first-sha': 'test-revision',
+            'second-sha': 'test-revision2',
+          },
         },
       });
       flush(done);
diff --git a/gr-checks/gr-checks-change-view-tab-header-view.js b/gr-checks/gr-checks-change-view-tab-header-view.js
index e77a888..a75b494 100644
--- a/gr-checks/gr-checks-change-view-tab-header-view.js
+++ b/gr-checks/gr-checks-change-view-tab-header-view.js
@@ -1,5 +1,5 @@
 (function() {
-'use strict';
+  'use strict';
 
   Polymer({
     is: 'gr-checks-change-view-tab-header-view',
diff --git a/gr-checks/gr-checks-change-view-tab-header-view_test.html b/gr-checks/gr-checks-change-view-tab-header-view_test.html
index 79fb0a9..cdcff23 100644
--- a/gr-checks/gr-checks-change-view-tab-header-view_test.html
+++ b/gr-checks/gr-checks-change-view-tab-header-view_test.html
@@ -20,10 +20,9 @@
     let element;
     let sandbox;
 
-    setup((done) => {
+    setup(done => {
       sandbox = sinon.sandbox.create();
 
-
       element = fixture('basic');
       flush(done);
     });
diff --git a/gr-checks/gr-checks-chip-view.js b/gr-checks/gr-checks-chip-view.js
index 36e4c1b..878f3cc 100644
--- a/gr-checks/gr-checks-chip-view.js
+++ b/gr-checks/gr-checks-chip-view.js
@@ -49,21 +49,20 @@
 
   function downgradeFailureToWarning(checks) {
     const hasFailedCheck = checks.some(
-      (check) => {
-        return check.state == Statuses.FAILED;
-      }
-    )
+        check => {
+          return check.state == Statuses.FAILED;
+        }
+    );
     if (!hasFailedCheck) return '';
     const hasRequiredFailedCheck = checks.some(
-      (check) => {
-        return check.state == Statuses.FAILED &&
+        check => {
+          return check.state == Statuses.FAILED &&
                check.blocking && check.blocking.length > 0;
-      }
-    )
+        }
+    );
     return hasRequiredFailedCheck ? '' : 'set';
   }
 
-
   Polymer({
     is: 'gr-checks-chip-view',
 
@@ -78,20 +77,21 @@
       _status: {type: String, computed: '_computeStatus(_checkStatuses)'},
       _statusString: {
         type: String,
-        computed: '_computeStatusString(_status, _checkStatuses, _failedRequiredChecksCount)',
+        computed: '_computeStatusString(_status, _checkStatuses,' +
+         '_failedRequiredChecksCount)',
       },
       _chipClasses: {type: String, computed: '_computeChipClass(_status)'},
       // Type is set as string so that it reflects on changes
       // Polymer does not support reflecting changes in Boolean property
       _downgradeFailureToWarning: {
         type: String,
-        value: ''
+        value: '',
       },
       pollChecksInterval: Object,
       visibilityChangeListenerAdded: {
         type: Boolean,
-        value: false
-      }
+        value: false,
+      },
     },
 
     detached() {
@@ -104,21 +104,21 @@
     ],
 
     listeners: {
-      'click': 'showChecksTable'
+      click: 'showChecksTable',
     },
 
     showChecksTable() {
       this.dispatchEvent(
-        new CustomEvent(
-          'show-checks-table',
-          {
-            bubbles: true,
-            composed: true,
-            detail: {
-              tab: 'change-view-tab-content-checks'
-            }
-          })
-        );
+          new CustomEvent(
+              'show-checks-table',
+              {
+                bubbles: true,
+                composed: true,
+                detail: {
+                  tab: 'change-view-tab-content-checks',
+                },
+              })
+      );
     },
 
     /**
@@ -155,7 +155,7 @@
       }
       const poll = () => this._fetchChecks(change, revision, getChecks);
       poll();
-      this.pollChecksInterval = setInterval(poll, CHECKS_POLL_INTERVAL_MS)
+      this.pollChecksInterval = setInterval(poll, CHECKS_POLL_INTERVAL_MS);
       if (!this.visibilityChangeListenerAdded) {
         this.visibilityChangeListenerAdded = true;
         this.listen(document, 'visibilitychange', '_onVisibililityChange');
@@ -174,10 +174,10 @@
 
     computeFailedRequiredChecksCount(checks) {
       const failedRequiredChecks = checks.filter(
-        check => {
-          return check.state == Statuses.FAILED &&
+          check => {
+            return check.state == Statuses.FAILED &&
             check.blocking && check.blocking.length > 0;
-        }
+          }
       );
       return failedRequiredChecks.length;
     },
@@ -191,7 +191,7 @@
       if (!checkStatuses) return;
       if (checkStatuses.total === 0) return 'No checks';
       let statusString = `${checkStatuses[status]} of ${
-          checkStatuses.total} checks ${HumanizedStatuses[status]}`;
+        checkStatuses.total} checks ${HumanizedStatuses[status]}`;
       if (status === Statuses.FAILED && failedRequiredChecksCount > 0) {
         statusString += ` (${failedRequiredChecksCount} required)`;
       }
diff --git a/gr-checks/gr-checks-chip-view_test.html b/gr-checks/gr-checks-chip-view_test.html
index b13a855..e17d772 100644
--- a/gr-checks/gr-checks-chip-view_test.html
+++ b/gr-checks/gr-checks-chip-view_test.html
@@ -18,16 +18,16 @@
   const CHECK1 = {
     checkId: 'test-check-id',
     log: 'http://example.com/test-log-url',
-    started: "2019-02-06T22:25:19.269Z",
-    finished: "2019-02-06T22:25:44.574Z",
+    started: '2019-02-06T22:25:19.269Z',
+    finished: '2019-02-06T22:25:44.574Z',
     state: 'SUCCESSFUL',
   };
 
   const CHECK2 = {
     checkId: 'test-check-id-2',
     log: 'http://example.com/test-log-url',
-    started: "2019-02-06T22:25:19.269Z",
-    finished: "2019-02-06T22:25:44.574Z",
+    started: '2019-02-06T22:25:19.269Z',
+    finished: '2019-02-06T22:25:44.574Z',
     state: 'FAILED',
   };
 
@@ -36,7 +36,7 @@
     let sandbox;
     let getChecksSpy;
 
-    setup((done) => {
+    setup(done => {
       sandbox = sinon.sandbox.create();
 
       getChecksSpy = sinon.stub();
@@ -45,10 +45,10 @@
       element = fixture('basic', {
         getChecks: getChecksSpy,
         change: {
-          '_number': 314,
+          _number: 314,
         },
         revision: {
-          '_number': 271,
+          _number: 271,
         },
       });
       flush(done);
diff --git a/gr-checks/gr-checks-item.js b/gr-checks/gr-checks-item.js
index 572ba2e..63777b9 100644
--- a/gr-checks/gr-checks-item.js
+++ b/gr-checks/gr-checks-item.js
@@ -38,12 +38,12 @@
       },
       _requiredForMerge: {
         type: String,
-        computed: '_computeRequiredForMerge(check)'
+        computed: '_computeRequiredForMerge(check)',
       },
       showCheckMessage: {
         type: Boolean,
         value: false,
-      }
+      },
     },
 
     /**
@@ -52,23 +52,22 @@
      * @event retry-check
      */
 
-
     /**
      * @param {!Defs.Check} check
      * @return {string}
      */
     _computeStartTime(check) {
-      if (!check.started) return "-";
+      if (!check.started) return '-';
       return check.started;
     },
 
     _toggleMessageShown() {
       this.showCheckMessage = !this.showCheckMessage;
-      this.fire('toggle-check-message', {uuid: this.check.checker_uuid})
+      this.fire('toggle-check-message', {uuid: this.check.checker_uuid});
     },
 
     _computeExpandIcon(showCheckMessage) {
-      return showCheckMessage ? "gr-icons:expand-less": "gr-icons:expand-more";
+      return showCheckMessage ? 'gr-icons:expand-less': 'gr-icons:expand-more';
     },
 
     /**
@@ -77,7 +76,7 @@
      */
     _computeDuration(check) {
       if (!check.started || !check.finished) {
-        return "-";
+        return '-';
       }
       const startTime = moment(check.started);
       const finishTime = check.finished ? moment(check.finished) : moment();
@@ -90,11 +89,12 @@
      * @return {string}
      */
     _computeRequiredForMerge(check) {
-      return (check.blocking && check.blocking.length === 0) ? "Optional" : "Required";
+      return (check.blocking && check.blocking.length === 0) ? 'Optional' :
+        'Required';
     },
     _handleReRunClicked(event) {
-      this.fire('retry-check',{uuid: this.check.checker_uuid},
-        {bubbles: false});
+      this.fire('retry-check', {uuid: this.check.checker_uuid},
+          {bubbles: false});
     },
   });
 
diff --git a/gr-checks/gr-checks-item_test.html b/gr-checks/gr-checks-item_test.html
index 826f99d..fc12bba 100644
--- a/gr-checks/gr-checks-item_test.html
+++ b/gr-checks/gr-checks-item_test.html
@@ -23,7 +23,7 @@
     let sandbox;
     let retryCheckSpy;
 
-    setup((done) => {
+    setup(done => {
       sandbox = sinon.sandbox.create();
       retryCheckSpy = sinon.stub();
       retryCheckSpy.returns(Promise.resolve());
@@ -33,8 +33,8 @@
         check: {
           checkId: 'test-check-id',
           url: 'http://example.com/test-log-url',
-          started: "2019-02-06T22:25:19.269Z",
-          finished: "2019-02-06T22:25:44.574Z",
+          started: '2019-02-06T22:25:19.269Z',
+          finished: '2019-02-06T22:25:44.574Z',
         },
       });
       flush(done);
@@ -49,31 +49,32 @@
 
     test('renders the run time', () => {
       const name = element.$$('td:nth-child(6)');
-      assert.equal(name .textContent.trim(), "11:25:19 PM");
+      assert.equal(name .textContent.trim(), '11:25:19 PM');
     });
 
     suite('duration', () => {
       test('renders the run duration', () => {
         const name = element.$$('td:nth-child(7)');
-        assert.equal(name .textContent.trim(), "25 sec");
+        assert.equal(name .textContent.trim(), '25 sec');
       });
 
       test('renders 0 sec when the start and end time are the same', () => {
         element.check = {
           checkId: 'test-check-id',
           url: 'http://example.com/test-log-url',
-          started: "2019-02-06T22:25:19.269Z",
-          finished: "2019-02-06T22:25:19.269Z",
+          started: '2019-02-06T22:25:19.269Z',
+          finished: '2019-02-06T22:25:19.269Z',
         };
         const name = element.$$('td:nth-child(7)');
-        assert.equal(name .textContent.trim(), "0 sec");
+        assert.equal(name .textContent.trim(), '0 sec');
       });
     });
 
     test('renders a link to the log', () => {
       const logLink = element.$$('td:nth-child(8) > a');
-      assert.equal(logLink.getAttribute('href'), "http://example.com/test-log-url");
-      assert.equal(logLink.textContent.trim(), "View log");
+      assert.equal(logLink.getAttribute('href'),
+          'http://example.com/test-log-url');
+      assert.equal(logLink.textContent.trim(), 'View log');
     });
 
     // pausing this check until retry api is available from backend
@@ -94,6 +95,5 @@
     //     assert.isTrue(retryCheckSpy.called);
     //   });
     // });
-
   });
 </script>
diff --git a/gr-checks/gr-checks-status.js b/gr-checks/gr-checks-status.js
index 908fde5..565e11a 100644
--- a/gr-checks/gr-checks-status.js
+++ b/gr-checks/gr-checks-status.js
@@ -1,5 +1,5 @@
 (function() {
-'use strict';
+  'use strict';
 
   Polymer({
     is: 'gr-checks-status',
@@ -11,7 +11,7 @@
         reflectToAttribute: true,
       },
       status: String,
-      downgradeFailureToWarning: String
+      downgradeFailureToWarning: String,
     },
 
     _isUnevaluated(status) {
@@ -35,11 +35,13 @@
     },
 
     _isFailed(status) {
-      return !this.downgradeFailureToWarning && window.Gerrit.Checks.isFailed(status);
+      return !this.downgradeFailureToWarning &&
+        window.Gerrit.Checks.isFailed(status);
     },
 
     _isWarning(status) {
-      return this.downgradeFailureToWarning && window.Gerrit.Checks.isFailed(status);
+      return this.downgradeFailureToWarning &&
+        window.Gerrit.Checks.isFailed(status);
     },
 
   });
diff --git a/gr-checks/gr-checks-status_test.html b/gr-checks/gr-checks-status_test.html
index bc59777..f4c5fab 100644
--- a/gr-checks/gr-checks-status_test.html
+++ b/gr-checks/gr-checks-status_test.html
@@ -16,7 +16,6 @@
 
 <script>
   suite('gr-checks-status tests', () => {
-    let element;
     let sandbox;
 
     setup(() => {
@@ -27,9 +26,8 @@
 
     function testStatus(expectedStatusClass, statusText, statusesToTest) {
       suite(expectedStatusClass, () => {
-
-        for(let statusToTest of statusesToTest) {
-          test(`renders ${expectedStatusClass} for ${statusToTest}`, (done) => {
+        for (const statusToTest of statusesToTest) {
+          test(`renders ${expectedStatusClass} for ${statusToTest}`, done => {
             const element = fixture('basic', {
               status: statusToTest,
               showText: false,
@@ -41,7 +39,8 @@
               done();
             });
           });
-          test(`renders ${expectedStatusClass} for ${statusToTest} rendering text ${statusText}`, (done) => {
+          test(`renders ${expectedStatusClass} for ${statusToTest} rendering
+            text ${statusText}`, done => {
             const element = fixture('basic', {
               status: statusToTest,
               showText: true,
diff --git a/gr-checks/gr-checks-view.js b/gr-checks/gr-checks-view.js
index fdd86e3..096da03 100644
--- a/gr-checks/gr-checks-view.js
+++ b/gr-checks/gr-checks-view.js
@@ -55,11 +55,11 @@
       pollChecksInterval: Number,
       visibilityChangeListenerAdded: {
         type: Boolean,
-        value: false
+        value: false,
       },
       _createCheckerCapability: {
         type: Boolean,
-        value: false
+        value: false,
       },
     },
 
@@ -87,12 +87,12 @@
       return this.pluginRestApi.getAccount().then(account => {
         if (!account) { return; }
         return this.pluginRestApi
-          .getAccountCapabilities(['checks-administrateCheckers'])
-          .then(capabilities => {
-            if (capabilities['checks-administrateCheckers']) {
-              this._createCheckerCapability = true;
-            }
-          });
+            .getAccountCapabilities(['checks-administrateCheckers'])
+            .then(capabilities => {
+              if (capabilities['checks-administrateCheckers']) {
+                this._createCheckerCapability = true;
+              }
+            });
       });
     },
 
@@ -102,15 +102,16 @@
 
     _orderChecks(a, b) {
       if (a.state != b.state) {
-        let indexA = StatusPriorityOrder.indexOf(a.state);
-        let indexB = StatusPriorityOrder.indexOf(b.state);
+        const indexA = StatusPriorityOrder.indexOf(a.state);
+        const indexB = StatusPriorityOrder.indexOf(b.state);
         if (indexA != -1 && indexB != -1) {
           return indexA - indexB;
         }
         return indexA == -1 ? 1 : -1;
       }
       if (a.state === Statuses.FAILED) {
-        if (a.blocking && b.blocking && a.blocking.length !== b.blocking.length) {
+        if (a.blocking && b.blocking &&
+            a.blocking.length !== b.blocking.length) {
           return a.blocking.length == 0 ? 1 : -1;
         }
       }
@@ -121,19 +122,19 @@
       const uuid = e.detail.uuid;
       const retryCheck = (change, revision, uuid) => {
         return this.pluginRestApi.post(
-          '/changes/' + change + '/revisions/' + revision + '/checks/' + uuid + '/rerun'
-        )
-      }
+            '/changes/' + change + '/revisions/' + revision + '/checks/' + uuid
+              + '/rerun'
+        );
+      };
       retryCheck(this.change._number, this.revision._number, uuid).then(
-        res => {
-          this._fetchChecks(this.change, this.revision, this.getChecks);
-        }, e => {
-          console.error(e);
-        }
-      )
+          res => {
+            this._fetchChecks(this.change, this.revision, this.getChecks);
+          }, e => {
+            console.error(e);
+          }
+      );
     },
 
-
     /**
      * Merge new checks into old checks to maintain showCheckMessage
      * property
@@ -144,14 +145,14 @@
      */
     _updateChecks(checks) {
       return checks.map(
-        (check) => {
-          const prevCheck = this._checks.find(
-            (c) => { return c.checker_uuid === check.checker_uuid }
-          )
-          if (!prevCheck) return Object.assign({}, check);
-          return Object.assign({}, prevCheck, check,
-            {showCheckMessage: prevCheck.showCheckMessage});
-        });
+          check => {
+            const prevCheck = this._checks.find(
+                c => { return c.checker_uuid === check.checker_uuid; }
+            );
+            if (!prevCheck) return Object.assign({}, check);
+            return Object.assign({}, prevCheck, check,
+                {showCheckMessage: prevCheck.showCheckMessage});
+          });
     },
 
     /**
@@ -188,17 +189,17 @@
     _toggleCheckMessage(e) {
       const uuid = e.detail.uuid;
       if (!uuid) {
-        console.warn("uuid not found");
+        console.warn('uuid not found');
         return;
       }
       const idx = this._checks.findIndex(check => check.checker_uuid === uuid);
       if (idx == -1) {
-        console.warn("check not found");
+        console.warn('check not found');
         return;
       }
       // Update subproperty of _checks[idx] so that it reflects to polymer
       this.set(`_checks.${idx}.showCheckMessage`,
-        !this._checks[idx].showCheckMessage)
+          !this._checks[idx].showCheckMessage);
     },
 
     _pollChecksRegularly(change, revision, getChecks) {
@@ -207,7 +208,7 @@
       }
       const poll = () => this._fetchChecks(change, revision, getChecks);
       poll();
-      this.pollChecksInterval = setInterval(poll, CHECKS_POLL_INTERVAL_MS)
+      this.pollChecksInterval = setInterval(poll, CHECKS_POLL_INTERVAL_MS);
       if (!this.visibilityChangeListenerAdded) {
         this.visibilityChangeListenerAdded = true;
         this.listen(document, 'visibilitychange', '_onVisibililityChange');
diff --git a/gr-checks/gr-checks-view_test.html b/gr-checks/gr-checks-view_test.html
index 1f54281..a801b9f 100644
--- a/gr-checks/gr-checks-view_test.html
+++ b/gr-checks/gr-checks-view_test.html
@@ -17,7 +17,7 @@
   <script>
     Polymer({
       is: 'gr-overlay',
-      refit() {}
+      refit() {},
     });
   </script>
 </dom-module>
@@ -39,44 +39,44 @@
   const CHECK1 = {
     checkId: 'test-check-id',
     logUrl: 'http://example.com/test-log-url',
-    startTime: "2019-02-06T22:25:19.269Z",
-    finishTime: "2019-02-06T22:25:44.574Z",
-    checker_name: "test checker",
-    state: "RUNNING",
-    checker_status: "ENABLED",
+    startTime: '2019-02-06T22:25:19.269Z',
+    finishTime: '2019-02-06T22:25:44.574Z',
+    checker_name: 'test checker',
+    state: 'RUNNING',
+    checker_status: 'ENABLED',
     blocking: [],
-    checker_description: "No-op jobs for testing purposes",
-    message: "added test file\n\nChange-Id: I8df212a28ae23cc239afd10ee4f506887e03ab70\n",
+    checker_description: 'No-op jobs for testing purposes',
+    message: '\n\nChange-Id: I8df212a28ae23cc239afd10ee4f506887e03ab70\n',
     showCheckMessage: undefined,
-    checker_uuid: "gerritforge:codestyle-a6a0e4682515f3521897c5f950d1394f4619d928",
+    checker_uuid: 'codestyle-a6a0e4682515f3521897c5f950d1394f4619d928',
   };
   const CHECK2 = {
     checkId: 'test-check-id2',
     logUrl: 'http://example.com/test-log-url',
-    startTime: "2019-02-06T22:25:19.269Z",
-    finishTime: "2019-02-06T22:25:44.574Z",
-    checker_name: "test checker2",
-    state: "RUNNING",
-    checker_status: "ENABLED",
+    startTime: '2019-02-06T22:25:19.269Z',
+    finishTime: '2019-02-06T22:25:44.574Z',
+    checker_name: 'test checker2',
+    state: 'RUNNING',
+    checker_status: 'ENABLED',
     blocking: [],
-    checker_description: "No-op jobs for testing purposes 2",
-    message: "added test file\n\nChange-Id: I8df212a28ae23cc239afd10ee4f506887e03ab70\n",
+    checker_description: 'No-op jobs for testing purposes 2',
+    message: '\n\nChange-Id: I8df212a28ae23cc239afd10ee4f506887e03ab70\n',
     showCheckMessage: undefined,
-    checker_uuid: "gerritforge:polygerrit-a6a0e4682515f3521897c5f950d1394f4619d928",
+    checker_uuid: 'polygerrit-a6a0e4682515f3521897c5f950d1394f4619d928',
   };
   const REVISION = {
-    "kind": "REWORK",
-    "_number": 3,
-    "created": "2018-05-15 21:56:13.000000000",
-    "uploader": {
-      "_account_id": 1000000,
+    kind: 'REWORK',
+    _number: 3,
+    created: '2018-05-15 21:56:13.000000000',
+    uploader: {
+      _account_id: 1000000,
     },
-    "ref": "refs/changes/00/1000/1",
-    "commit": {
-      "parents": [],
-      "subject": "added test file",
-      "message": "added test file\n\nChange-Id: I8df212a28ae23cc239afd10ee4f506887e03ab70\n",
-      "commit": "1c9a1dfd38ea51dc7880f3ddf669100710f0c91b"
+    ref: 'refs/changes/00/1000/1',
+    commit: {
+      parents: [],
+      subject: '',
+      message: '\n\nChange-Id: I8df212a28ae23cc239afd10ee4f506887e03ab70\n',
+      commit: '1c9a1dfd38ea51dc7880f3ddf669100710f0c91b',
     },
   };
 
@@ -88,12 +88,12 @@
     let retryCheckSpy;
     let isConfiguredSpy;
     let isConfiguredResolve;
-    let getAccountSpy, getAccountPromise, getAccountResolve;
-    let fetchJSONSpy, fetchJSONPromise, fetchJSONResolve;
-    let getAccountCapabilitiesSpy, getAccountCapabilitiesPromise,
-      getAccountCapabilitiesResolve;
+    let getAccountSpy; let getAccountResolve;
+    let fetchJSONSpy; let fetchJSONResolve;
+    let getAccountCapabilitiesSpy;
+    let getAccountCapabilitiesResolve;
 
-    setup((done) => {
+    setup(done => {
       sandbox = sinon.sandbox.create();
 
       getChecksSpy = sinon.stub();
@@ -115,39 +115,39 @@
       getAccountSpy = sinon.stub();
       const getAccountPromise = new Promise((resolve, reject) => {
         getAccountResolve = resolve;
-      })
+      });
       getAccountSpy.returns(getAccountPromise);
 
       fetchJSONSpy = sinon.stub();
       const fetchJSONPromise = new Promise((resolve, reject) => {
         fetchJSONResolve = resolve;
-      })
-      fetchJSONSpy.returns(fetchJSONPromise)
+      });
+      fetchJSONSpy.returns(fetchJSONPromise);
 
       getAccountCapabilitiesSpy = sinon.stub();
       const getAccountCapabilitiesPromise = new Promise((resolve, reject) => {
         getAccountCapabilitiesResolve = resolve;
-      })
+      });
       getAccountCapabilitiesSpy.returns(getAccountCapabilitiesPromise);
 
       plugin.restApi = () => ({
         getAccount: getAccountSpy,
         fetchJSON: fetchJSONSpy,
-        getAccountCapabilities: getAccountCapabilitiesSpy
+        getAccountCapabilities: getAccountCapabilitiesSpy,
       });
       element = fixture('basic', {
         retryCheck: retryCheckSpy,
         getChecks: getChecksSpy,
         isConfigured: isConfiguredSpy,
         change: {
-          'project': 'test-repository',
-          '_number': 2,
-          'revisions': {
-            'first-sha': "test-revision",
+          project: 'test-repository',
+          _number: 2,
+          revisions: {
+            'first-sha': 'test-revision',
             'second-sha': REVISION,
           },
         },
-        plugin: plugin,
+        plugin,
         revision: REVISION,
       });
       flush(done);
@@ -166,7 +166,7 @@
     });
 
     suite('no checks returned', () => {
-      setup((done) => {
+      setup(done => {
         getChecksResolve([]);
         flush(done);
       });
@@ -181,18 +181,19 @@
       });
 
       suite('not configured', () => {
-        setup((done) => {
+        setup(done => {
           isConfiguredResolve(false);
           flush(done);
         });
 
         test('renders checks not configured', () => {
           const header = element.$$('h2');
-          assert.equal(header.textContent.trim(), 'Code review checks not configured');
+          assert.equal(header.textContent.trim(),
+              'Code review checks not configured');
         });
 
         suite('create checker capability false', () => {
-          setup((done) => {
+          setup(done => {
             getAccountResolve(true);
             getAccountCapabilitiesResolve({'checks-administrateCheckers': false});
             flush(done);
@@ -203,7 +204,7 @@
         });
 
         suite('create checker capability true', () => {
-          setup((done) => {
+          setup(done => {
             getAccountResolve(true);
             getAccountCapabilitiesResolve({'checks-administrateCheckers': true});
             flush(done);
@@ -212,24 +213,24 @@
             assert(element.$$('gr-button'));
           });
         });
-
       });
 
       suite('no checks ran', () => {
-        setup((done) => {
+        setup(done => {
           isConfiguredResolve(true);
           flush(done);
         });
 
         test('renders checks not configured', () => {
           const header = element.$$('h2');
-          assert.equal(header.textContent.trim(), 'No checks ran for this code review');
+          assert.equal(header.textContent.trim(),
+              'No checks ran for this code review');
         });
       });
     });
 
     suite('checks updated properly', () => {
-      setup((done) => {
+      setup(done => {
         element._checks = [CHECK1, CHECK2];
         flush(done);
       });
@@ -237,12 +238,12 @@
       test('message is updated', () => {
         const NEW_CHECKS = [Object.assign({}, CHECK1),
           Object.assign({}, CHECK2)];
-        NEW_CHECKS[0].message = "New message 1";
-        NEW_CHECKS[1].message = "New message 2";
+        NEW_CHECKS[0].message = 'New message 1';
+        NEW_CHECKS[1].message = 'New message 2';
         const EXPECTED_CHECKS = [Object.assign({}, CHECK1),
           Object.assign({}, CHECK2)];
-        EXPECTED_CHECKS[0].message = "New message 1";
-        EXPECTED_CHECKS[1].message = "New message 2";
+        EXPECTED_CHECKS[0].message = 'New message 1';
+        EXPECTED_CHECKS[1].message = 'New message 2';
         const UPDATED_CHECKS = element._updateChecks(NEW_CHECKS);
         assert.equal(UPDATED_CHECKS[0].message, NEW_CHECKS[0].message);
         assert.equal(UPDATED_CHECKS[1].message, NEW_CHECKS[1].message);
@@ -259,14 +260,13 @@
       test('status is updated', () => {
         const NEW_CHECKS = [Object.assign({}, CHECK1),
           Object.assign({}, CHECK2)];
-        NEW_CHECKS[0].state = "SUCCESSFUL";
-        NEW_CHECKS[1].state = "FAILED";
+        NEW_CHECKS[0].state = 'SUCCESSFUL';
+        NEW_CHECKS[1].state = 'FAILED';
         const UPDATED_CHECKS = element._updateChecks(NEW_CHECKS);
         assert.deepEqual(UPDATED_CHECKS, NEW_CHECKS);
       });
 
       test('showMessage property is retained', () => {
-
         element._checks[0].showCheckMessage = true;
         element._checks[1].showCheckMessage = false;
 
@@ -274,13 +274,12 @@
           Object.assign({}, CHECK2)];
         const UPDATED_CHECKS = element._updateChecks(NEW_CHECKS);
         assert.equal(UPDATED_CHECKS[0].showCheckMessage,
-          CHECK1.showCheckMessage);
+            CHECK1.showCheckMessage);
         assert.equal(UPDATED_CHECKS[1].showCheckMessage,
-          CHECK2.showCheckMessage);
+            CHECK2.showCheckMessage);
 
         element._checks[0].showCheckMessage = undefined;
         element._checks[1].showCheckMessage = undefined;
-
       });
 
       test('message is not shown if new check has no message', () => {
@@ -290,7 +289,6 @@
         const UPDATED_CHECKS = element._updateChecks(NEW_CHECKS);
         assert.equal(UPDATED_CHECKS[0].message, NEW_CHECKS[0].message);
       });
-
     });
 
     suite('with checks', () => {
@@ -310,11 +308,11 @@
 
       test('renders a table of all the checks', () => {
         const tbody = element.$$('table > tbody');
-        assert.lengthOf(tbody.querySelectorAll('gr-checks-item'), 3)
+        assert.lengthOf(tbody.querySelectorAll('gr-checks-item'), 3);
       });
 
       suite('create checker capability false', () => {
-        setup((done) => {
+        setup(done => {
           getAccountResolve(true);
           getAccountCapabilitiesResolve({'checks-administrateCheckers': false});
           flush(done);
@@ -325,7 +323,7 @@
       });
 
       suite('create checker capability true', () => {
-        setup((done) => {
+        setup(done => {
           getAccountResolve(true);
           getAccountCapabilitiesResolve({'checks-administrateCheckers': true});
           flush(done);
@@ -334,7 +332,6 @@
           assert(element.$$('gr-button'));
         });
       });
-
     });
   });
 
diff --git a/gr-checks/gr-checks.html b/gr-checks/gr-checks.html
index ceed087..7a636da 100644
--- a/gr-checks/gr-checks.html
+++ b/gr-checks/gr-checks.html
@@ -9,10 +9,9 @@
 <dom-module id="gr-checks">
   <script>
     Gerrit.install(plugin => {
-
       const getChecks = (change, revision) => {
         return plugin.restApi().get(
-          '/changes/' + change + '/revisions/' + revision + '/checks?o=CHECKER');
+            '/changes/' + change + '/revisions/' + revision + '/checks?o=CHECKER');
       };
 
       // TODO(brohlfs): Enable this dashboard column when search queries start
@@ -24,23 +23,23 @@
       //     'change-list-item-cell',
       //     'gr-checks-change-list-item-cell-view');
       plugin.registerCustomComponent(
-        'commit-container',
-        'gr-checks-chip-view').onAttached(
-        view => {
-          view['getChecks'] = getChecks;
-        }
+          'commit-container',
+          'gr-checks-chip-view').onAttached(
+          view => {
+            view['getChecks'] = getChecks;
+          }
       );
       plugin.registerDynamicCustomComponent(
-        'change-view-tab-header',
-        'gr-checks-change-view-tab-header-view'
+          'change-view-tab-header',
+          'gr-checks-change-view-tab-header-view'
       );
       plugin.registerDynamicCustomComponent(
-        'change-view-tab-content',
-        'gr-checks-view').onAttached(
-        view => {
-          view['isConfigured'] = (repository) => Promise.resolve(true);
-          view['getChecks'] = getChecks;
-        });
-      });
+          'change-view-tab-content',
+          'gr-checks-view').onAttached(
+          view => {
+            view['isConfigured'] = repository => Promise.resolve(true);
+            view['getChecks'] = getChecks;
+          });
+    });
   </script>
 </dom-module>
diff --git a/gr-checks/gr-create-checkers-dialog.js b/gr-checks/gr-create-checkers-dialog.js
index 2c0dd25..51be8c0 100644
--- a/gr-checks/gr-create-checkers-dialog.js
+++ b/gr-checks/gr-create-checkers-dialog.js
@@ -11,14 +11,14 @@
     properties: {
       checker: {
         type: Object,
-        observer: '_checkerChanged'
+        observer: '_checkerChanged',
       },
       _name: String,
       _scheme: String,
       _id: String,
       _uuid: {
         type: String,
-        value: ""
+        value: '',
       },
       pluginRestApi: Object,
       _url: String,
@@ -26,8 +26,8 @@
       _getRepoSuggestions: {
         type: Function,
         value() {
-          return this._repoSuggestions.bind(this)
-        }
+          return this._repoSuggestions.bind(this);
+        },
       },
       // The backend might support multiple repos in the future
       // which is why I decided to keep it as an array.
@@ -38,37 +38,37 @@
       },
       _repositorySelected: {
         type: Boolean,
-        value: false
+        value: false,
       },
       _handleOnRemove: Function,
       _errorMsg: {
         type: String,
-        value: ''
+        value: '',
       },
       _statuses: {
         type: Array,
         value: [
           {
-            "text": "ENABLED",
-            "value": "ENABLED"
+            text: 'ENABLED',
+            value: 'ENABLED',
           },
           {
-            "text": "DISABLED",
-            "value": "DISABLED"
-          }
+            text: 'DISABLED',
+            value: 'DISABLED',
+          },
         ],
-        readOnly: true
+        readOnly: true,
       },
       _required: {
         type: Boolean,
-        value: false
+        value: false,
       },
       _status: String,
       _edit: {
         type: Boolean,
-        value: false
+        value: false,
       },
-      _query: String
+      _query: String,
     },
 
     behaviours: [
@@ -80,14 +80,13 @@
     * @event cancel
     */
 
-
     observers: [
       '_updateUUID(_scheme, _id)',
     ],
 
     _checkerChanged() {
       if (!this.checker) {
-        console.warn("checker not set");
+        console.warn('checker not set');
         return;
       }
       this._edit = true;
@@ -107,7 +106,7 @@
     },
 
     _updateUUID(_scheme, _id) {
-      this._uuid = _scheme + ":" + _id;
+      this._uuid = _scheme + ':' + _id;
     },
 
     _handleStatusChange(e) {
@@ -156,47 +155,47 @@
 
     _createChecker(checker) {
       return this.pluginRestApi.send(
-        'POST',
-        CREATE_CHECKER_URL,
-        checker,
-      )
+          'POST',
+          CREATE_CHECKER_URL,
+          checker
+      );
     },
 
     _editChecker(checker) {
       const url = CREATE_CHECKER_URL + checker.uuid;
       return this.pluginRestApi.send(
-        'POST',
-        url,
-        checker
-      )
+          'POST',
+          url,
+          checker
+      );
     },
 
     handleEditChecker() {
       if (!this._validateRequest()) return;
       this._editChecker(this._getCheckerRequestObject()).then(
-        res => {
-          if (res) {
-            this._errorMsg = '';
-            this.fire('cancel', {reload: true}, {bubbles: true});
+          res => {
+            if (res) {
+              this._errorMsg = '';
+              this.fire('cancel', {reload: true}, {bubbles: true});
+            }
+          },
+          error => {
+            this._errorMsg = error;
           }
-        },
-        error => {
-          this._errorMsg = error;
-        }
-      )
+      );
     },
 
     _getCheckerRequestObject() {
       return {
-        "name" : this._name,
-        "description" : this._description || '',
-        "uuid" : this._uuid,
-        "repository": this._repos[0].name,
-        "url" : this._url,
-        "status": this._status,
-        "blocking": this._required ? ["STATE_NOT_PASSING"] : [],
-        "query": this._query
-      }
+        name: this._name,
+        description: this._description || '',
+        uuid: this._uuid,
+        repository: this._repos[0].name,
+        url: this._url,
+        status: this._status,
+        blocking: this._required ? ['STATE_NOT_PASSING'] : [],
+        query: this._query,
+      };
     },
 
     handleCreateChecker() {
@@ -204,13 +203,13 @@
       // Currently after creating checker there is no reload happening (as
       // this would result in the user exiting the screen).
       this._createChecker(this._getCheckerRequestObject()).then(
-        res => {
-          if (res) this._cleanUp();
-        },
-        error => {
-          this._errorMsg = error;
-        }
-      )
+          res => {
+            if (res) this._cleanUp();
+          },
+          error => {
+            this._errorMsg = error;
+          }
+      );
     },
 
     _cleanUp() {
@@ -229,10 +228,12 @@
     },
 
     _repoSuggestions(filter) {
-      const _makeSuggestion = repo => {return {name: repo.name, value: repo}};
+      const _makeSuggestion = repo => {
+        return {name: repo.name, value: repo};
+      };
       return this.pluginRestApi.getRepos(filter, REPOS_PER_PAGE).then(
-        repos => repos.map(repo =>  _makeSuggestion(repo))
-      )
+          repos => repos.map(repo => _makeSuggestion(repo))
+      );
     },
 
     _handleRepositorySelected(e) {
@@ -245,7 +246,7 @@
     },
 
     _handleOnRemove(e) {
-      let idx = this._repos.indexOf(e.detail.repo);
+      const idx = this._repos.indexOf(e.detail.repo);
       if (idx == -1) return;
       this.splice('_repos', idx, 1);
       if (this._repos.length == 0) {
diff --git a/gr-checks/gr-repo-chip.js b/gr-checks/gr-repo-chip.js
index 0e1a0bd..19aff38 100644
--- a/gr-checks/gr-repo-chip.js
+++ b/gr-checks/gr-repo-chip.js
@@ -18,6 +18,5 @@
       e.preventDefault();
       this.fire('remove', {repo: this.repo});
     },
-  })
-
+  });
 })();
\ No newline at end of file
diff --git a/test/index.html b/test/index.html
index b1ffd08..f132465 100644
--- a/test/index.html
+++ b/test/index.html
@@ -29,6 +29,6 @@
     '../gr-checks/gr-checks-chip-view_test.html',
     '../gr-checks/gr-checks-item_test.html',
     '../gr-checks/gr-checks-status_test.html',
-    '../gr-checks/gr-checks-view_test.html'
+    '../gr-checks/gr-checks-view_test.html',
   ]);
 </script>
\ No newline at end of file