Use Object spread over Object.assign in spec/

See https://gitlab.com/gitlab-org/gitlab/-/issues/202172

This is part of multiple merge requests in order to reduce the risk of
breaking master

spec/frontend/api_spec.js

@@ -15,7 +15,7 @@ describe('Api', () => {
   beforeEach(() => {
     mock = new MockAdapter(axios);
     originalGon = window.gon;
-    window.gon = Object.assign({}, dummyGon);
+    window.gon = { ...dummyGon };
   });
 
   afterEach(() => {

spec/frontend/blob/components/blob_content_spec.js

@@ -38,7 +38,7 @@ describe('Blob Content component', () => {
 
     it('renders error if there is any in the viewer', () => {
       const renderError = 'Oops';
-      const viewer = Object.assign({}, SimpleViewerMock, { renderError });
+      const viewer = { ...SimpleViewerMock, renderError };
       createComponent({}, viewer);
       expect(wrapper.contains(GlLoadingIcon)).toBe(false);
       expect(wrapper.contains(BlobContentError)).toBe(true);

spec/frontend/blob/components/blob_header_filepath_spec.js

@@ -15,7 +15,7 @@ describe('Blob Header Filepath', () => {
   function createComponent(blobProps = {}, options = {}) {
     wrapper = shallowMount(BlobHeaderFilepath, {
       propsData: {
-        blob: Object.assign({}, MockBlob, blobProps),
+        blob: { ...MockBlob, ...blobProps },
       },
       ...options,
     });

spec/frontend/blob/components/blob_header_spec.js

@@ -13,7 +13,7 @@ describe('Blob Header Default Actions', () => {
     const method = shouldMount ? mount : shallowMount;
     wrapper = method.call(this, BlobHeader, {
       propsData: {
-        blob: Object.assign({}, Blob, blobProps),
+        blob: { ...Blob, ...blobProps },
         ...propsData,
       },
       ...options,

spec/frontend/boards/board_list_spec.js

@@ -64,7 +64,7 @@ describe('Board list component', () => {
   let getIssues;
   function generateIssues(compWrapper) {
     for (let i = 1; i < 20; i += 1) {
-      const issue = Object.assign({}, compWrapper.list.issues[0]);
+      const issue = { ...compWrapper.list.issues[0] };
       issue.id += i;
       compWrapper.list.issues.push(issue);
     }

spec/frontend/clusters/components/knative_domain_editor_spec.js

@@ -93,7 +93,7 @@ describe('KnativeDomainEditor', () => {
 
     it('displays toast indicating a successful update', () => {
       wrapper.vm.$toast = { show: jest.fn() };
-      wrapper.setProps({ knative: Object.assign({ updateSuccessful: true }, knative) });
+      wrapper.setProps({ knative: { updateSuccessful: true, ...knative } });
 
       return wrapper.vm.$nextTick(() => {
         expect(wrapper.vm.$toast.show).toHaveBeenCalledWith(

spec/frontend/commit/pipelines/pipelines_spec.js

@@ -118,7 +118,7 @@ describe('Pipelines table in Commits and Merge requests', () => {
     let pipelineCopy;
 
     beforeEach(() => {
-      pipelineCopy = Object.assign({}, pipeline);
+      pipelineCopy = { ...pipeline };
     });
 
     describe('when latest pipeline has detached flag and canRunPipeline is true', () => {
@@ -128,12 +128,7 @@ describe('Pipelines table in Commits and Merge requests', () => {
 
         mock.onGet('endpoint.json').reply(200, [pipelineCopy]);
 
-        vm = mountComponent(
-          PipelinesTable,
-          Object.assign({}, props, {
-            canRunPipeline: true,
-          }),
-        );
+        vm = mountComponent(PipelinesTable, { ...props, canRunPipeline: true });
 
         setImmediate(() => {
           expect(vm.$el.querySelector('.js-run-mr-pipeline')).not.toBeNull();
@@ -149,12 +144,7 @@ describe('Pipelines table in Commits and Merge requests', () => {
 
         mock.onGet('endpoint.json').reply(200, [pipelineCopy]);
 
-        vm = mountComponent(
-          PipelinesTable,
-          Object.assign({}, props, {
-            canRunPipeline: false,
-          }),
-        );
+        vm = mountComponent(PipelinesTable, { ...props, canRunPipeline: false });
 
         setImmediate(() => {
           expect(vm.$el.querySelector('.js-run-mr-pipeline')).toBeNull();
@@ -170,12 +160,7 @@ describe('Pipelines table in Commits and Merge requests', () => {
 
         mock.onGet('endpoint.json').reply(200, [pipelineCopy]);
 
-        vm = mountComponent(
-          PipelinesTable,
-          Object.assign({}, props, {
-            canRunPipeline: true,
-          }),
-        );
+        vm = mountComponent(PipelinesTable, { ...props, canRunPipeline: true });
 
         setImmediate(() => {
           expect(vm.$el.querySelector('.js-run-mr-pipeline')).toBeNull();
@@ -191,12 +176,7 @@ describe('Pipelines table in Commits and Merge requests', () => {
 
         mock.onGet('endpoint.json').reply(200, [pipelineCopy]);
 
-        vm = mountComponent(
-          PipelinesTable,
-          Object.assign({}, props, {
-            canRunPipeline: false,
-          }),
-        );
+        vm = mountComponent(PipelinesTable, { ...props, canRunPipeline: false });
 
         setImmediate(() => {
           expect(vm.$el.querySelector('.js-run-mr-pipeline')).toBeNull();
@@ -211,14 +191,12 @@ describe('Pipelines table in Commits and Merge requests', () => {
 
         mock.onGet('endpoint.json').reply(200, [pipelineCopy]);
 
-        vm = mountComponent(
-          PipelinesTable,
-          Object.assign({}, props, {
-            canRunPipeline: true,
-            projectId: '5',
-            mergeRequestId: 3,
-          }),
-        );
+        vm = mountComponent(PipelinesTable, {
+          ...props,
+          canRunPipeline: true,
+          projectId: '5',
+          mergeRequestId: 3,
+        });
       });
 
       it('updates the loading state', done => {

spec/frontend/diffs/components/diff_discussions_spec.js

@@ -13,7 +13,7 @@ const localVue = createLocalVue();
 describe('DiffDiscussions', () => {
   let store;
   let wrapper;
-  const getDiscussionsMockData = () => [Object.assign({}, discussionsMockData)];
+  const getDiscussionsMockData = () => [{ ...discussionsMockData }];
 
   const createComponent = props => {
     store = createStore();

spec/frontend/diffs/components/diff_expansion_cell_spec.js

@@ -81,7 +81,7 @@ describe('DiffExpansionCell', () => {
       isTop: false,
       isBottom: false,
     };
-    const props = Object.assign({}, defaults, options);
+    const props = { ...defaults, ...options };
 
     vm = createComponentWithStore(cmp, store, props).$mount();
   };

spec/frontend/diffs/components/diff_gutter_avatars_spec.js

@@ -2,7 +2,7 @@ import { shallowMount } from '@vue/test-utils';
 import DiffGutterAvatars from '~/diffs/components/diff_gutter_avatars.vue';
 import discussionsMockData from '../mock_data/diff_discussions';
 
-const getDiscussionsMockData = () => [Object.assign({}, discussionsMockData)];
+const getDiscussionsMockData = () => [{ ...discussionsMockData }];
 
 describe('DiffGutterAvatars', () => {
   let wrapper;

spec/frontend/diffs/components/diff_line_note_form_spec.js

@@ -9,7 +9,7 @@ describe('DiffLineNoteForm', () => {
   let wrapper;
   let diffFile;
   let diffLines;
-  const getDiffFileMock = () => Object.assign({}, diffFileMockData);
+  const getDiffFileMock = () => ({ ...diffFileMockData });
 
   beforeEach(() => {
     diffFile = getDiffFileMock();

spec/frontend/diffs/components/inline_diff_expansion_row_spec.js

@@ -16,7 +16,7 @@ describe('InlineDiffExpansionRow', () => {
       isTop: false,
       isBottom: false,
     };
-    const props = Object.assign({}, defaults, options);
+    const props = { ...defaults, ...options };
 
     return createComponentWithStore(cmp, createStore(), props).$mount();
   };

spec/frontend/diffs/components/inline_diff_view_spec.js

@@ -8,8 +8,8 @@ import discussionsMockData from '../mock_data/diff_discussions';
 
 describe('InlineDiffView', () => {
   let component;
-  const getDiffFileMock = () => Object.assign({}, diffFileMockData);
-  const getDiscussionsMockData = () => [Object.assign({}, discussionsMockData)];
+  const getDiffFileMock = () => ({ ...diffFileMockData });
+  const getDiscussionsMockData = () => [{ ...discussionsMockData }];
   const notesLength = getDiscussionsMockData()[0].notes.length;
 
   beforeEach(done => {

spec/frontend/diffs/components/parallel_diff_expansion_row_spec.js

@@ -16,7 +16,7 @@ describe('ParallelDiffExpansionRow', () => {
       isTop: false,
       isBottom: false,
     };
-    const props = Object.assign({}, defaults, options);
+    const props = { ...defaults, ...options };
 
     return createComponentWithStore(cmp, createStore(), props).$mount();
   };

spec/frontend/diffs/components/parallel_diff_view_spec.js

@@ -7,7 +7,7 @@ import diffFileMockData from '../mock_data/diff_file';
 
 describe('ParallelDiffView', () => {
   let component;
-  const getDiffFileMock = () => Object.assign({}, diffFileMockData);
+  const getDiffFileMock = () => ({ ...diffFileMockData });
 
   beforeEach(() => {
     const diffFile = getDiffFileMock();

spec/frontend/diffs/store/getters_spec.js

@@ -14,10 +14,10 @@ describe('Diffs Module Getters', () => {
 
   beforeEach(() => {
     localState = state();
-    discussionMock = Object.assign({}, discussion);
+    discussionMock = { ...discussion };
     discussionMock.diff_file.file_hash = diffFileMock.fileHash;
 
-    discussionMock1 = Object.assign({}, discussion);
+    discussionMock1 = { ...discussion };
     discussionMock1.diff_file.file_hash = diffFileMock.fileHash;
   });
 

spec/frontend/diffs/store/utils_spec.js

@@ -372,13 +372,13 @@ describe('DiffsStoreUtils', () => {
       mock = getDiffFileMock();
       preparedDiff = { diff_files: [mock] };
       splitInlineDiff = {
-        diff_files: [Object.assign({}, mock, { parallel_diff_lines: undefined })],
+        diff_files: [{ ...mock, parallel_diff_lines: undefined }],
       };
       splitParallelDiff = {
-        diff_files: [Object.assign({}, mock, { highlighted_diff_lines: undefined })],
+        diff_files: [{ ...mock, highlighted_diff_lines: undefined }],
       };
       completedDiff = {
-        diff_files: [Object.assign({}, mock, { highlighted_diff_lines: undefined })],
+        diff_files: [{ ...mock, highlighted_diff_lines: undefined }],
       };
 
       preparedDiff.diff_files = utils.prepareDiffData(preparedDiff);

spec/frontend/groups/components/app_spec.js

@@ -216,7 +216,7 @@ describe('AppComponent', () => {
       let groupItem;
 
       beforeEach(() => {
-        groupItem = Object.assign({}, mockParentGroupItem);
+        groupItem = { ...mockParentGroupItem };
         groupItem.isOpen = false;
         groupItem.isChildrenLoading = false;
       });
@@ -271,7 +271,7 @@ describe('AppComponent', () => {
 
     describe('showLeaveGroupModal', () => {
       it('caches candidate group (as props) which is to be left', () => {
-        const group = Object.assign({}, mockParentGroupItem);
+        const group = { ...mockParentGroupItem };
 
         expect(vm.targetGroup).toBe(null);
         expect(vm.targetParentGroup).toBe(null);
@@ -282,7 +282,7 @@ describe('AppComponent', () => {
       });
 
       it('updates props which show modal confirmation dialog', () => {
-        const group = Object.assign({}, mockParentGroupItem);
+        const group = { ...mockParentGroupItem };
 
         expect(vm.showModal).toBe(false);
         expect(vm.groupLeaveConfirmationMessage).toBe('');
@@ -297,7 +297,7 @@ describe('AppComponent', () => {
 
     describe('hideLeaveGroupModal', () => {
       it('hides modal confirmation which is shown before leaving the group', () => {
-        const group = Object.assign({}, mockParentGroupItem);
+        const group = { ...mockParentGroupItem };
         vm.showLeaveGroupModal(group, mockParentGroupItem);
 
         expect(vm.showModal).toBe(true);
@@ -312,7 +312,7 @@ describe('AppComponent', () => {
       let childGroupItem;
 
       beforeEach(() => {
-        groupItem = Object.assign({}, mockParentGroupItem);
+        groupItem = { ...mockParentGroupItem };
         groupItem.children = mockChildren;
         [childGroupItem] = groupItem.children;
         groupItem.isChildrenLoading = false;

spec/frontend/groups/components/group_folder_spec.js

@@ -52,7 +52,7 @@ describe('GroupFolderComponent', () => {
     });
 
     it('should render more children link when groups list has children over MAX_CHILDREN_COUNT limit', () => {
-      const parentGroup = Object.assign({}, mockParentGroupItem);
+      const parentGroup = { ...mockParentGroupItem };
       parentGroup.childrenCount = 21;
 
       const newVm = createComponent(mockGroups, parentGroup);

spec/frontend/groups/components/group_item_spec.js

@@ -52,7 +52,7 @@ describe('GroupItemComponent', () => {
     describe('hasChildren', () => {
       it('should return boolean value representing if group has any children present', () => {
         let newVm;
-        const group = Object.assign({}, mockParentGroupItem);
+        const group = { ...mockParentGroupItem };
 
         group.childrenCount = 5;
         newVm = createComponent(group);
@@ -71,7 +71,7 @@ describe('GroupItemComponent', () => {
     describe('hasAvatar', () => {
       it('should return boolean value representing if group has any avatar present', () => {
         let newVm;
-        const group = Object.assign({}, mockParentGroupItem);
+        const group = { ...mockParentGroupItem };
 
         group.avatarUrl = null;
         newVm = createComponent(group);
@@ -90,7 +90,7 @@ describe('GroupItemComponent', () => {
     describe('isGroup', () => {
       it('should return boolean value representing if group item is of type `group` or not', () => {
         let newVm;
-        const group = Object.assign({}, mockParentGroupItem);
+        const group = { ...mockParentGroupItem };
 
         group.type = 'group';
         newVm = createComponent(group);
@@ -138,7 +138,7 @@ describe('GroupItemComponent', () => {
 
       it('should navigate page to group homepage if group does not have any children present', () => {
         jest.spyOn(urlUtilities, 'visitUrl').mockImplementation();
-        const group = Object.assign({}, mockParentGroupItem);
+        const group = { ...mockParentGroupItem };
         group.childrenCount = 0;
         const newVm = createComponent(group);
         jest.spyOn(eventHub, '$emit').mockImplementation(() => {});

spec/frontend/groups/components/item_actions_spec.js

@@ -46,7 +46,7 @@ describe('ItemActionsComponent', () => {
     });
 
     it('should render Edit Group button with correct attribute values', () => {
-      const group = Object.assign({}, mockParentGroupItem);
+      const group = { ...mockParentGroupItem };
       group.canEdit = true;
       const newVm = createComponent(group);
 
@@ -64,7 +64,7 @@ describe('ItemActionsComponent', () => {
     });
 
     it('should render Leave Group button with correct attribute values', () => {
-      const group = Object.assign({}, mockParentGroupItem);
+      const group = { ...mockParentGroupItem };
       group.canLeave = true;
       const newVm = createComponent(group);
 

spec/frontend/groups/components/item_stats_spec.js

@@ -23,7 +23,7 @@ describe('ItemStatsComponent', () => {
     describe('visibilityIcon', () => {
       it('should return icon class based on `item.visibility` value', () => {
         Object.keys(VISIBILITY_TYPE_ICON).forEach(visibility => {
-          const item = Object.assign({}, mockParentGroupItem, { visibility });
+          const item = { ...mockParentGroupItem, visibility };
           const vm = createComponent(item);
 
           expect(vm.visibilityIcon).toBe(VISIBILITY_TYPE_ICON[visibility]);
@@ -35,10 +35,7 @@ describe('ItemStatsComponent', () => {
     describe('visibilityTooltip', () => {
       it('should return tooltip string for Group based on `item.visibility` value', () => {
         Object.keys(GROUP_VISIBILITY_TYPE).forEach(visibility => {
-          const item = Object.assign({}, mockParentGroupItem, {
-            visibility,
-            type: ITEM_TYPE.GROUP,
-          });
+          const item = { ...mockParentGroupItem, visibility, type: ITEM_TYPE.GROUP };
           const vm = createComponent(item);
 
           expect(vm.visibilityTooltip).toBe(GROUP_VISIBILITY_TYPE[visibility]);
@@ -48,10 +45,7 @@ describe('ItemStatsComponent', () => {
 
       it('should return tooltip string for Project based on `item.visibility` value', () => {
         Object.keys(PROJECT_VISIBILITY_TYPE).forEach(visibility => {
-          const item = Object.assign({}, mockParentGroupItem, {
-            visibility,
-            type: ITEM_TYPE.PROJECT,
-          });
+          const item = { ...mockParentGroupItem, visibility, type: ITEM_TYPE.PROJECT };
           const vm = createComponent(item);
 
           expect(vm.visibilityTooltip).toBe(PROJECT_VISIBILITY_TYPE[visibility]);
@@ -65,13 +59,13 @@ describe('ItemStatsComponent', () => {
         let item;
         let vm;
 
-        item = Object.assign({}, mockParentGroupItem, { type: ITEM_TYPE.PROJECT });
+        item = { ...mockParentGroupItem, type: ITEM_TYPE.PROJECT };
         vm = createComponent(item);
 
         expect(vm.isProject).toBeTruthy();
         vm.$destroy();
 
-        item = Object.assign({}, mockParentGroupItem, { type: ITEM_TYPE.GROUP });
+        item = { ...mockParentGroupItem, type: ITEM_TYPE.GROUP };
         vm = createComponent(item);
 
         expect(vm.isProject).toBeFalsy();
@@ -84,13 +78,13 @@ describe('ItemStatsComponent', () => {
         let item;
         let vm;
 
-        item = Object.assign({}, mockParentGroupItem, { type: ITEM_TYPE.GROUP });
+        item = { ...mockParentGroupItem, type: ITEM_TYPE.GROUP };
         vm = createComponent(item);
 
         expect(vm.isGroup).toBeTruthy();
         vm.$destroy();
 
-        item = Object.assign({}, mockParentGroupItem, { type: ITEM_TYPE.PROJECT });
+        item = { ...mockParentGroupItem, type: ITEM_TYPE.PROJECT };
         vm = createComponent(item);
 
         expect(vm.isGroup).toBeFalsy();
@@ -109,10 +103,7 @@ describe('ItemStatsComponent', () => {
     });
 
     it('renders start count and last updated information for project item correctly', () => {
-      const item = Object.assign({}, mockParentGroupItem, {
-        type: ITEM_TYPE.PROJECT,
-        starCount: 4,
-      });
+      const item = { ...mockParentGroupItem, type: ITEM_TYPE.PROJECT, starCount: 4 };
       const vm = createComponent(item);
 
       const projectStarIconEl = vm.$el.querySelector('.project-stars');

spec/frontend/groups/components/item_stats_value_spec.js

@@ -27,7 +27,7 @@ describe('ItemStatsValueComponent', () => {
 
     describe('isValuePresent', () => {
       it('returns true if non-empty `value` is present', () => {
-        vm = createComponent(Object.assign({}, itemConfig, { value: 10 }));
+        vm = createComponent({ ...itemConfig, value: 10 });
 
         expect(vm.isValuePresent).toBeTruthy();
       });

spec/frontend/groups/store/groups_store_spec.js

@@ -108,8 +108,8 @@ describe('ProjectsStore', () => {
   describe('removeGroup', () => {
     it('should remove children from group item in state', () => {
       const store = new GroupsStore();
-      const rawParentGroup = Object.assign({}, mockGroups[0]);
-      const rawChildGroup = Object.assign({}, mockGroups[1]);
+      const rawParentGroup = { ...mockGroups[0] };
+      const rawChildGroup = { ...mockGroups[1] };
 
       store.setGroups([rawParentGroup]);
       store.setGroupChildren(store.state.groups[0], [rawChildGroup]);

spec/frontend/ide/components/ide_review_spec.js

@@ -15,7 +15,7 @@ describe('IDE review mode', () => {
     store = createStore();
     store.state.currentProjectId = 'abcproject';
     store.state.currentBranchId = 'master';
-    store.state.projects.abcproject = Object.assign({}, projectData);
+    store.state.projects.abcproject = { ...projectData };
     Vue.set(store.state.trees, 'abcproject/master', {
       tree: [file('fileName')],
       loading: false,

spec/frontend/ide/components/ide_spec.js

@@ -10,7 +10,7 @@ function bootstrap(projData) {
 
   store.state.currentProjectId = 'abcproject';
   store.state.currentBranchId = 'master';
-  store.state.projects.abcproject = Object.assign({}, projData);
+  store.state.projects.abcproject = { ...projData };
   Vue.set(store.state.trees, 'abcproject/master', {
     tree: [],
     loading: false,
@@ -27,7 +27,7 @@ describe('ide component, empty repo', () => {
   let vm;
 
   beforeEach(() => {
-    const emptyProjData = Object.assign({}, projectData, { empty_repo: true, branches: {} });
+    const emptyProjData = { ...projectData, empty_repo: true, branches: {} };
     vm = bootstrap(emptyProjData);
     vm.$mount();
   });

spec/frontend/ide/components/ide_tree_list_spec.js

@@ -14,7 +14,7 @@ describe('IDE tree list', () => {
   const bootstrapWithTree = (tree = normalBranchTree) => {
     store.state.currentProjectId = 'abcproject';
     store.state.currentBranchId = 'master';
-    store.state.projects.abcproject = Object.assign({}, projectData);
+    store.state.projects.abcproject = { ...projectData };
     Vue.set(store.state.trees, 'abcproject/master', {
       tree,
       loading: false,

spec/frontend/ide/components/ide_tree_spec.js

@@ -13,7 +13,7 @@ describe('IdeRepoTree', () => {
 
     store.state.currentProjectId = 'abcproject';
     store.state.currentBranchId = 'master';
-    store.state.projects.abcproject = Object.assign({}, projectData);
+    store.state.projects.abcproject = { ...projectData };
     Vue.set(store.state.trees, 'abcproject/master', {
       tree: [file('fileName')],
       loading: false,

spec/frontend/import_projects/components/import_projects_table_spec.js

@@ -17,11 +17,12 @@ describe('ImportProjectsTable', () => {
   };
 
   function initStore() {
-    const stubbedActions = Object.assign({}, actions, {
+    const stubbedActions = {
+      ...actions,
       fetchJobs: jest.fn(),
       fetchRepos: jest.fn(actions.requestRepos),
       fetchImport: jest.fn(actions.requestImport),
-    });
+    };
 
     const store = new Vuex.Store({
       state: state(),

spec/frontend/import_projects/components/provider_repo_table_row_spec.js

@@ -18,9 +18,7 @@ describe('ProviderRepoTableRow', () => {
   };
 
   function initStore() {
-    const stubbedActions = Object.assign({}, actions, {
-      fetchImport,
-    });
+    const stubbedActions = { ...actions, fetchImport };
 
     const store = new Vuex.Store({
       state: state(),

spec/frontend/integrations/edit/components/active_toggle_spec.js

@@ -13,7 +13,7 @@ describe('ActiveToggle', () => {
 
   const createComponent = props => {
     wrapper = mount(ActiveToggle, {
-      propsData: Object.assign({}, defaultProps, props),
+      propsData: { ...defaultProps, ...props },
     });
   };
 

spec/frontend/integrations/edit/components/jira_trigger_fields_spec.js

@@ -13,7 +13,7 @@ describe('JiraTriggerFields', () => {
 
   const createComponent = props => {
     wrapper = mount(JiraTriggerFields, {
-      propsData: Object.assign({}, defaultProps, props),
+      propsData: { ...defaultProps, ...props },
     });
   };
 

spec/frontend/issue_show/components/description_spec.js

@@ -113,12 +113,7 @@ describe('Description component', () => {
     beforeEach(() => {
       vm.$destroy();
       TaskList.mockClear();
-      vm = mountComponent(
-        DescriptionComponent,
-        Object.assign({}, props, {
-          issuableType: 'issuableType',
-        }),
-      );
+      vm = mountComponent(DescriptionComponent, { ...props, issuableType: 'issuableType' });
     });
 
     it('re-inits the TaskList when description changed', () => {

spec/frontend/jobs/components/log/line_header_spec.js

@@ -86,7 +86,7 @@ describe('Job Log Header Line', () => {
 
   describe('with duration', () => {
     beforeEach(() => {
-      createComponent(Object.assign({}, data, { duration: '00:10' }));
+      createComponent({ ...data, duration: '00:10' });
     });
 
     it('renders the duration badge', () => {

spec/frontend/jobs/store/mutations_spec.js

@@ -59,7 +59,7 @@ describe('Jobs Store Mutations', () => {
 
     describe('when traceSize is bigger than the total size', () => {
       it('sets isTraceSizeVisible to false', () => {
-        const copy = Object.assign({}, stateCopy, { traceSize: 5118460, size: 2321312 });
+        const copy = { ...stateCopy, traceSize: 5118460, size: 2321312 };
 
         mutations[types.RECEIVE_TRACE_SUCCESS](copy, { total: 511846 });
 

spec/frontend/lib/utils/common_utils_spec.js

@@ -503,7 +503,7 @@ describe('common_utils', () => {
 
     beforeEach(() => {
       window.gon = window.gon || {};
-      beforeGon = Object.assign({}, window.gon);
+      beforeGon = { ...window.gon };
       window.gon.sprite_icons = 'icons.svg';
     });
 

spec/frontend/notes/components/noteable_discussion_spec.js

@@ -138,7 +138,7 @@ describe('noteable_discussion component', () => {
 
   describe('signout widget', () => {
     beforeEach(() => {
-      originalGon = Object.assign({}, window.gon);
+      originalGon = { ...window.gon };
       window.gon = window.gon || {};
     });
 

spec/frontend/notes/old_notes_spec.js

@@ -193,7 +193,7 @@ describe.skip('Old Notes (~/notes.js)', () => {
       $('.js-comment-button').click();
 
       const $targetNote = $notesContainer.find(`#note_${noteEntity.id}`);
-      const updatedNote = Object.assign({}, noteEntity);
+      const updatedNote = { ...noteEntity };
       updatedNote.note = 'bar';
       notes.updateNote(updatedNote, $targetNote);
 

spec/frontend/notes/stores/collapse_utils_spec.js

@@ -18,9 +18,7 @@ describe('Collapse utils', () => {
   });
 
   it('returns false when a system note is not a description type', () => {
-    expect(isDescriptionSystemNote(Object.assign({}, mockSystemNote, { note: 'foo' }))).toEqual(
-      false,
-    );
+    expect(isDescriptionSystemNote({ ...mockSystemNote, note: 'foo' })).toEqual(false);
   });
 
   it('gets the time difference between two notes', () => {

spec/frontend/notes/stores/mutation_spec.js

@@ -50,7 +50,7 @@ describe('Notes Store mutations', () => {
   });
 
   describe('ADD_NEW_REPLY_TO_DISCUSSION', () => {
-    const newReply = Object.assign({}, note, { discussion_id: discussionMock.id });
+    const newReply = { ...note, discussion_id: discussionMock.id };
 
     let state;
 
@@ -86,7 +86,7 @@ describe('Notes Store mutations', () => {
 
   describe('EXPAND_DISCUSSION', () => {
     it('should expand a collapsed discussion', () => {
-      const discussion = Object.assign({}, discussionMock, { expanded: false });
+      const discussion = { ...discussionMock, expanded: false };
 
       const state = {
         discussions: [discussion],
@@ -100,7 +100,7 @@ describe('Notes Store mutations', () => {
 
   describe('COLLAPSE_DISCUSSION', () => {
     it('should collapse an expanded discussion', () => {
-      const discussion = Object.assign({}, discussionMock, { expanded: true });
+      const discussion = { ...discussionMock, expanded: true };
 
       const state = {
         discussions: [discussion],
@@ -114,7 +114,7 @@ describe('Notes Store mutations', () => {
 
   describe('REMOVE_PLACEHOLDER_NOTES', () => {
     it('should remove all placeholder notes in indivudal notes and discussion', () => {
-      const placeholderNote = Object.assign({}, individualNote, { isPlaceholderNote: true });
+      const placeholderNote = { ...individualNote, isPlaceholderNote: true };
       const state = { discussions: [placeholderNote] };
       mutations.REMOVE_PLACEHOLDER_NOTES(state);
 
@@ -298,7 +298,7 @@ describe('Notes Store mutations', () => {
 
   describe('TOGGLE_DISCUSSION', () => {
     it('should open a closed discussion', () => {
-      const discussion = Object.assign({}, discussionMock, { expanded: false });
+      const discussion = { ...discussionMock, expanded: false };
 
       const state = {
         discussions: [discussion],
@@ -348,8 +348,8 @@ describe('Notes Store mutations', () => {
     });
 
     it('should open all closed discussions', () => {
-      const discussion1 = Object.assign({}, discussionMock, { id: 0, expanded: false });
-      const discussion2 = Object.assign({}, discussionMock, { id: 1, expanded: true });
+      const discussion1 = { ...discussionMock, id: 0, expanded: false };
+      const discussion2 = { ...discussionMock, id: 1, expanded: true };
       const discussionIds = [discussion1.id, discussion2.id];
 
       const state = { discussions: [discussion1, discussion2] };
@@ -362,8 +362,8 @@ describe('Notes Store mutations', () => {
     });
 
     it('should close all opened discussions', () => {
-      const discussion1 = Object.assign({}, discussionMock, { id: 0, expanded: false });
-      const discussion2 = Object.assign({}, discussionMock, { id: 1, expanded: true });
+      const discussion1 = { ...discussionMock, id: 0, expanded: false };
+      const discussion2 = { ...discussionMock, id: 1, expanded: true };
       const discussionIds = [discussion1.id, discussion2.id];
 
       const state = { discussions: [discussion1, discussion2] };
@@ -382,7 +382,7 @@ describe('Notes Store mutations', () => {
         discussions: [individualNote],
       };
 
-      const updated = Object.assign({}, individualNote.notes[0], { note: 'Foo' });
+      const updated = { ...individualNote.notes[0], note: 'Foo' };
 
       mutations.UPDATE_NOTE(state, updated);
 

spec/frontend/pipelines/graph/stage_column_component_spec.js

@@ -26,7 +26,7 @@ describe('stage column component', () => {
   beforeEach(() => {
     const mockGroups = [];
     for (let i = 0; i < 3; i += 1) {
-      const mockedJob = Object.assign({}, mockJob);
+      const mockedJob = { ...mockJob };
       mockedJob.id += i;
       mockGroups.push(mockedJob);
     }

spec/frontend/pipelines/pipelines_spec.js

@@ -601,7 +601,7 @@ describe('Pipelines', () => {
 
   describe('updates results when a staged is clicked', () => {
     beforeEach(() => {
-      const copyPipeline = Object.assign({}, pipelineWithStages);
+      const copyPipeline = { ...pipelineWithStages };
       copyPipeline.id += 1;
       mock
         .onGet('twitter/flight/pipelines.json')

spec/frontend/pipelines/pipelines_table_row_spec.js

@@ -169,7 +169,7 @@ describe('Pipelines Table Row', () => {
     };
 
     beforeEach(() => {
-      const withActions = Object.assign({}, pipeline);
+      const withActions = { ...pipeline };
       withActions.details.scheduled_actions = [scheduledJobAction];
       withActions.flags.cancelable = true;
       withActions.flags.retryable = true;

spec/frontend/pipelines/stage_spec.js

@@ -96,7 +96,7 @@ describe('Pipelines stage component', () => {
 
   describe('update endpoint correctly', () => {
     beforeEach(() => {
-      const copyStage = Object.assign({}, stageReply);
+      const copyStage = { ...stageReply };
       copyStage.latest_statuses[0].name = 'this is the updated content';
       mock.onGet('bar.json').reply(200, copyStage);
       createComponent({

spec/frontend/pipelines/stores/pipeline_store_spec.js

@@ -7,7 +7,7 @@ describe('EE Pipeline store', () => {
 
   beforeEach(() => {
     store = new PipelineStore();
-    data = Object.assign({}, LinkedPipelines);
+    data = { ...LinkedPipelines };
 
     store.storePipeline(data);
   });

spec/frontend/pipelines/test_reports/stores/mutations_spec.js

@@ -20,7 +20,7 @@ describe('Mutations TestReports Store', () => {
 
   describe('set endpoint', () => {
     it('should set endpoint', () => {
-      const expectedState = Object.assign({}, mockState, { endpoint: 'foo' });
+      const expectedState = { ...mockState, endpoint: 'foo' };
       mutations[types.SET_ENDPOINT](mockState, 'foo');
 
       expect(mockState.endpoint).toEqual(expectedState.endpoint);
@@ -47,14 +47,14 @@ describe('Mutations TestReports Store', () => {
 
   describe('toggle loading', () => {
     it('should set to true', () => {
-      const expectedState = Object.assign({}, mockState, { isLoading: true });
+      const expectedState = { ...mockState, isLoading: true };
       mutations[types.TOGGLE_LOADING](mockState);
 
       expect(mockState.isLoading).toEqual(expectedState.isLoading);
     });
 
     it('should toggle back to false', () => {
-      const expectedState = Object.assign({}, mockState, { isLoading: false });
+      const expectedState = { ...mockState, isLoading: false };
       mockState.isLoading = true;
 
       mutations[types.TOGGLE_LOADING](mockState);

spec/frontend/snippets/components/snippet_blob_view_spec.js

@@ -84,9 +84,7 @@ describe('Blob Embeddable', () => {
     });
 
     it('sets rich viewer correctly', () => {
-      const data = Object.assign({}, dataMock, {
-        activeViewerType: RichViewerMock.type,
-      });
+      const data = { ...dataMock, activeViewerType: RichViewerMock.type };
       createComponent({}, data);
       expect(wrapper.find(RichViewer).exists()).toBe(true);
     });

spec/frontend/snippets/components/snippet_title_spec.js

@@ -17,7 +17,7 @@ describe('Snippet header component', () => {
   };
 
   function createComponent({ props = snippet } = {}) {
-    const defaultProps = Object.assign({}, props);
+    const defaultProps = { ...props };
 
     wrapper = shallowMount(SnippetTitle, {
       propsData: {

spec/frontend/tracking_spec.js

@@ -46,10 +46,11 @@ describe('Tracking', () => {
       expect(snowplowSpy).not.toHaveBeenCalledWith('enableFormTracking');
       expect(snowplowSpy).not.toHaveBeenCalledWith('enableLinkClickTracking');
 
-      window.snowplowOptions = Object.assign({}, window.snowplowOptions, {
+      window.snowplowOptions = {
+        ...window.snowplowOptions,
         formTracking: true,
         linkClickTracking: true,
-      });
+      };
 
       initUserTracking();
       expect(snowplowSpy).toHaveBeenCalledWith('enableFormTracking');

spec/frontend/vue_mr_widget/components/mr_collapsible_extension_spec.js

@@ -61,7 +61,7 @@ describe('Merge Request Collapsible Extension', () => {
 
   describe('while loading', () => {
     beforeEach(() => {
-      mountComponent(Object.assign({}, data, { isLoading: true }));
+      mountComponent({ ...data, isLoading: true });
     });
 
     it('renders the buttons disabled', () => {
@@ -86,7 +86,7 @@ describe('Merge Request Collapsible Extension', () => {
 
   describe('with error', () => {
     beforeEach(() => {
-      mountComponent(Object.assign({}, data, { hasError: true }));
+      mountComponent({ ...data, hasError: true });
     });
 
     it('does not render the buttons', () => {

spec/frontend/vue_mr_widget/components/mr_widget_pipeline_container_spec.js

@@ -13,7 +13,7 @@ describe('MrWidgetPipelineContainer', () => {
   const factory = (props = {}) => {
     wrapper = mount(MrWidgetPipelineContainer, {
       propsData: {
-        mr: Object.assign({}, mockStore),
+        mr: { ...mockStore },
         ...props,
       },
     });

spec/frontend/vue_shared/components/file_row_spec.js

@@ -91,9 +91,7 @@ describe('File row component', () => {
     jest.spyOn(wrapper.vm, 'scrollIntoView');
 
     wrapper.setProps({
-      file: Object.assign({}, wrapper.props('file'), {
-        active: true,
-      }),
+      file: { ...wrapper.props('file'), active: true },
     });
 
     return nextTick().then(() => {
@@ -125,9 +123,7 @@ describe('File row component', () => {
 
   it('matches the current route against encoded file URL', () => {
     const fileName = 'with space';
-    const rowFile = Object.assign({}, file(fileName), {
-      url: `/${fileName}`,
-    });
+    const rowFile = { ...file(fileName), url: `/${fileName}` };
     const routerPath = `/project/${escapeFileUrl(fileName)}`;
     createComponent(
       {

spec/frontend/vue_shared/components/issue/issue_milestone_spec.js

@@ -36,9 +36,7 @@ describe('IssueMilestoneComponent', () => {
     describe('isMilestoneStarted', () => {
       it('should return `false` when milestoneStart prop is not defined', () => {
         wrapper.setProps({
-          milestone: Object.assign({}, mockMilestone, {
-            start_date: '',
-          }),
+          milestone: { ...mockMilestone, start_date: '' },
         });
 
         expect(wrapper.vm.isMilestoneStarted).toBe(false);
@@ -46,9 +44,7 @@ describe('IssueMilestoneComponent', () => {
 
       it('should return `true` when milestone start date is past current date', () => {
         wrapper.setProps({
-          milestone: Object.assign({}, mockMilestone, {
-            start_date: '1990-07-22',
-          }),
+          milestone: { ...mockMilestone, start_date: '1990-07-22' },
         });
 
         expect(wrapper.vm.isMilestoneStarted).toBe(true);
@@ -58,9 +54,7 @@ describe('IssueMilestoneComponent', () => {
     describe('isMilestonePastDue', () => {
       it('should return `false` when milestoneDue prop is not defined', () => {
         wrapper.setProps({
-          milestone: Object.assign({}, mockMilestone, {
-            due_date: '',
-          }),
+          milestone: { ...mockMilestone, due_date: '' },
         });
 
         expect(wrapper.vm.isMilestonePastDue).toBe(false);
@@ -68,9 +62,7 @@ describe('IssueMilestoneComponent', () => {
 
       it('should return `true` when milestone due is past current date', () => {
         wrapper.setProps({
-          milestone: Object.assign({}, mockMilestone, {
-            due_date: '1990-07-22',
-          }),
+          milestone: { ...mockMilestone, due_date: '1990-07-22' },
         });
 
         expect(wrapper.vm.isMilestonePastDue).toBe(true);
@@ -84,9 +76,7 @@ describe('IssueMilestoneComponent', () => {
 
       it('returns string containing absolute milestone start date when due date is not present', () => {
         wrapper.setProps({
-          milestone: Object.assign({}, mockMilestone, {
-            due_date: '',
-          }),
+          milestone: { ...mockMilestone, due_date: '' },
         });
 
         expect(wrapper.vm.milestoneDatesAbsolute).toBe('(January 1, 2018)');
@@ -94,10 +84,7 @@ describe('IssueMilestoneComponent', () => {
 
       it('returns empty string when both milestone start and due dates are not present', () => {
         wrapper.setProps({
-          milestone: Object.assign({}, mockMilestone, {
-            start_date: '',
-            due_date: '',
-          }),
+          milestone: { ...mockMilestone, start_date: '', due_date: '' },
         });
 
         expect(wrapper.vm.milestoneDatesAbsolute).toBe('');
@@ -107,9 +94,7 @@ describe('IssueMilestoneComponent', () => {
     describe('milestoneDatesHuman', () => {
       it('returns string containing milestone due date when date is yet to be due', () => {
         wrapper.setProps({
-          milestone: Object.assign({}, mockMilestone, {
-            due_date: `${new Date().getFullYear() + 10}-01-01`,
-          }),
+          milestone: { ...mockMilestone, due_date: `${new Date().getFullYear() + 10}-01-01` },
         });
 
         expect(wrapper.vm.milestoneDatesHuman).toContain('years remaining');
@@ -117,10 +102,7 @@ describe('IssueMilestoneComponent', () => {
 
       it('returns string containing milestone start date when date has already started and due date is not present', () => {
         wrapper.setProps({
-          milestone: Object.assign({}, mockMilestone, {
-            start_date: '1990-07-22',
-            due_date: '',
-          }),
+          milestone: { ...mockMilestone, start_date: '1990-07-22', due_date: '' },
         });
 
         expect(wrapper.vm.milestoneDatesHuman).toContain('Started');
@@ -128,10 +110,11 @@ describe('IssueMilestoneComponent', () => {
 
       it('returns string containing milestone start date when date is yet to start and due date is not present', () => {
         wrapper.setProps({
-          milestone: Object.assign({}, mockMilestone, {
+          milestone: {
+            ...mockMilestone,
             start_date: `${new Date().getFullYear() + 10}-01-01`,
             due_date: '',
-          }),
+          },
         });
 
         expect(wrapper.vm.milestoneDatesHuman).toContain('Starts');
@@ -139,10 +122,7 @@ describe('IssueMilestoneComponent', () => {
 
       it('returns empty string when milestone start and due dates are not present', () => {
         wrapper.setProps({
-          milestone: Object.assign({}, mockMilestone, {
-            start_date: '',
-            due_date: '',
-          }),
+          milestone: { ...mockMilestone, start_date: '', due_date: '' },
         });
 
         expect(wrapper.vm.milestoneDatesHuman).toBe('');

spec/frontend/vue_shared/components/sidebar/labels_select/dropdown_button_spec.js

@@ -8,11 +8,12 @@ import {
   mockLabels,
 } from '../../../../../javascripts/vue_shared/components/sidebar/labels_select/mock_data';
 
-const componentConfig = Object.assign({}, mockConfig, {
+const componentConfig = {
+  ...mockConfig,
   fieldName: 'label_id[]',
   labels: mockLabels,
   showExtraOptions: false,
-});
+};
 
 const createComponent = (config = componentConfig) => {
   const Component = Vue.extend(dropdownButtonComponent);
@@ -34,7 +35,7 @@ describe('DropdownButtonComponent', () => {
   describe('computed', () => {
     describe('dropdownToggleText', () => {
       it('returns text as `Label` when `labels` prop is empty array', () => {
-        const mockEmptyLabels = Object.assign({}, componentConfig, { labels: [] });
+        const mockEmptyLabels = { ...componentConfig, labels: [] };
         const vmEmptyLabels = createComponent(mockEmptyLabels);
 
         expect(vmEmptyLabels.dropdownToggleText).toBe('Label');
@@ -42,9 +43,7 @@ describe('DropdownButtonComponent', () => {
       });
 
       it('returns first label name with remaining label count when `labels` prop has more than one item', () => {
-        const mockMoreLabels = Object.assign({}, componentConfig, {
-          labels: mockLabels.concat(mockLabels),
-        });
+        const mockMoreLabels = { ...componentConfig, labels: mockLabels.concat(mockLabels) };
         const vmMoreLabels = createComponent(mockMoreLabels);
 
         expect(vmMoreLabels.dropdownToggleText).toBe(
@@ -54,9 +53,7 @@ describe('DropdownButtonComponent', () => {
       });
 
       it('returns first label name when `labels` prop has only one item present', () => {
-        const singleLabel = Object.assign({}, componentConfig, {
-          labels: [mockLabels[0]],
-        });
+        const singleLabel = { ...componentConfig, labels: [mockLabels[0]] };
         const vmSingleLabel = createComponent(singleLabel);
 
         expect(vmSingleLabel.dropdownToggleText).toBe(mockLabels[0].title);

spec/frontend/vue_shared/components/sidebar/labels_select_vue/store/actions_spec.js

@@ -15,7 +15,7 @@ describe('LabelsSelect Actions', () => {
   };
 
   beforeEach(() => {
-    state = Object.assign({}, defaultState());
+    state = { ...defaultState() };
   });
 
   describe('setInitialState', () => {

spec/javascripts/emoji_spec.js

@@ -69,7 +69,7 @@ const defaults = {
 };
 
 function testGlEmojiElement(element, name, unicodeVersion, unicodeMoji, options = {}) {
-  const opts = Object.assign({}, defaults, options);
+  const opts = { ...defaults, ...options };
   expect(element.tagName.toLowerCase()).toBe('gl-emoji');
   expect(element.dataset.name).toBe(name);
   expect(element.dataset.fallbackSrc.length).toBeGreaterThan(0);
@@ -383,9 +383,7 @@ describe('gl_emoji', () => {
 
     it('bomb(6.0) with 6.0 support', () => {
       const emojiKey = 'bomb';
-      const unicodeSupportMap = Object.assign({}, emptySupportMap, {
-        '6.0': true,
-      });
+      const unicodeSupportMap = { ...emptySupportMap, '6.0': true };
       const isSupported = isEmojiUnicodeSupported(
         unicodeSupportMap,
         emojiFixtureMap[emojiKey].moji,
@@ -409,9 +407,7 @@ describe('gl_emoji', () => {
 
     it('bomb(6.0) without 6.0 but with 9.0 support', () => {
       const emojiKey = 'bomb';
-      const unicodeSupportMap = Object.assign({}, emptySupportMap, {
-        '9.0': true,
-      });
+      const unicodeSupportMap = { ...emptySupportMap, '9.0': true };
       const isSupported = isEmojiUnicodeSupported(
         unicodeSupportMap,
         emojiFixtureMap[emojiKey].moji,
@@ -423,7 +419,8 @@ describe('gl_emoji', () => {
 
     it('construction_worker_tone5(8.0) without skin tone modifier support', () => {
       const emojiKey = 'construction_worker_tone5';
-      const unicodeSupportMap = Object.assign({}, emptySupportMap, {
+      const unicodeSupportMap = {
+        ...emptySupportMap,
         skinToneModifier: false,
         '9.0': true,
         '8.0': true,
@@ -437,7 +434,7 @@ describe('gl_emoji', () => {
         3.2: true,
         '3.0': true,
         1.1: true,
-      });
+      };
       const isSupported = isEmojiUnicodeSupported(
         unicodeSupportMap,
         emojiFixtureMap[emojiKey].moji,
@@ -449,13 +446,14 @@ describe('gl_emoji', () => {
 
     it('use native keycap on >=57 chrome', () => {
       const emojiKey = 'five';
-      const unicodeSupportMap = Object.assign({}, emptySupportMap, {
+      const unicodeSupportMap = {
+        ...emptySupportMap,
         '3.0': true,
         meta: {
           isChrome: true,
           chromeVersion: 57,
         },
-      });
+      };
       const isSupported = isEmojiUnicodeSupported(
         unicodeSupportMap,
         emojiFixtureMap[emojiKey].moji,
@@ -467,13 +465,14 @@ describe('gl_emoji', () => {
 
     it('fallback keycap on <57 chrome', () => {
       const emojiKey = 'five';
-      const unicodeSupportMap = Object.assign({}, emptySupportMap, {
+      const unicodeSupportMap = {
+        ...emptySupportMap,
         '3.0': true,
         meta: {
           isChrome: true,
           chromeVersion: 50,
         },
-      });
+      };
       const isSupported = isEmojiUnicodeSupported(
         unicodeSupportMap,
         emojiFixtureMap[emojiKey].moji,

spec/javascripts/gl_dropdown_spec.js

@@ -44,19 +44,17 @@ describe('glDropdown', function describeDropdown() {
   };
 
   function initDropDown(hasRemote, isFilterable, extraOpts = {}) {
-    const options = Object.assign(
-      {
-        selectable: true,
-        filterable: isFilterable,
-        data: hasRemote ? remoteMock.bind({}, this.projectsData) : this.projectsData,
-        search: {
-          fields: ['name'],
-        },
-        text: project => project.name_with_namespace || project.name,
-        id: project => project.id,
+    const options = {
+      selectable: true,
+      filterable: isFilterable,
+      data: hasRemote ? remoteMock.bind({}, this.projectsData) : this.projectsData,
+      search: {
+        fields: ['name'],
       },
-      extraOpts,
-    );
+      text: project => project.name_with_namespace || project.name,
+      id: project => project.id,
+      ...extraOpts,
+    };
     this.dropdownButtonElement = $(
       '#js-project-dropdown',
       this.dropdownContainerElement,

spec/javascripts/image_diff/image_badge_spec.js

@@ -10,11 +10,7 @@ describe('ImageBadge', () => {
   };
 
   it('should save actual property', () => {
-    const imageBadge = new ImageBadge(
-      Object.assign({}, options, {
-        actual: imageMeta,
-      }),
-    );
+    const imageBadge = new ImageBadge({ ...options, actual: imageMeta });
 
     const { actual } = imageBadge;
 
@@ -25,11 +21,7 @@ describe('ImageBadge', () => {
   });
 
   it('should save browser property', () => {
-    const imageBadge = new ImageBadge(
-      Object.assign({}, options, {
-        browser: imageMeta,
-      }),
-    );
+    const imageBadge = new ImageBadge({ ...options, browser: imageMeta });
 
     const { browser } = imageBadge;
 
@@ -83,11 +75,7 @@ describe('ImageBadge', () => {
     });
 
     it('should generate browser property', () => {
-      const imageBadge = new ImageBadge(
-        Object.assign({}, options, {
-          imageEl: document.createElement('img'),
-        }),
-      );
+      const imageBadge = new ImageBadge({ ...options, imageEl: document.createElement('img') });
 
       expect(imageDiffHelper.resizeCoordinatesToImageElement).toHaveBeenCalled();
       expect(imageBadge.browser).toEqual(true);

spec/javascripts/jobs/components/commit_block_spec.js

@@ -66,7 +66,7 @@ describe('Commit block', () => {
 
   describe('without merge request', () => {
     it('does not render merge request', () => {
-      const copyProps = Object.assign({}, props);
+      const copyProps = { ...props };
       delete copyProps.mergeRequest;
 
       vm = mountComponent(Component, {

spec/javascripts/jobs/components/sidebar_spec.js

@@ -20,7 +20,7 @@ describe('Sidebar details block', () => {
 
   describe('when there is no retry path retry', () => {
     it('should not render a retry button', () => {
-      const copy = Object.assign({}, job);
+      const copy = { ...job };
       delete copy.retry_path;
 
       store.dispatch('receiveJobSuccess', copy);
@@ -43,10 +43,7 @@ describe('Sidebar details block', () => {
 
   describe('with terminal path', () => {
     it('renders terminal link', () => {
-      store.dispatch(
-        'receiveJobSuccess',
-        Object.assign({}, job, { terminal_path: 'job/43123/terminal' }),
-      );
+      store.dispatch('receiveJobSuccess', { ...job, terminal_path: 'job/43123/terminal' });
       vm = mountComponentWithStore(SidebarComponent, {
         store,
       });

spec/javascripts/reports/components/test_issue_body_spec.js

@@ -40,7 +40,7 @@ describe('Test Issue body', () => {
     beforeEach(() => {
       vm = mountComponentWithStore(Component, {
         store,
-        props: Object.assign({}, commonProps, { isNew: true }),
+        props: { ...commonProps, isNew: true },
       });
     });
 

spec/javascripts/vue_mr_widget/components/mr_widget_header_spec.js

@@ -153,7 +153,7 @@ describe('MRWidgetHeader', () => {
 
       beforeEach(() => {
         vm = mountComponent(Component, {
-          mr: Object.assign({}, mrDefaultOptions),
+          mr: { ...mrDefaultOptions },
         });
       });
 
@@ -176,7 +176,7 @@ describe('MRWidgetHeader', () => {
       });
 
       it('renders web ide button in disabled state with no href', () => {
-        const mr = Object.assign({}, mrDefaultOptions, { canPushToSourceBranch: false });
+        const mr = { ...mrDefaultOptions, canPushToSourceBranch: false };
         vm = mountComponent(Component, { mr });
 
         const link = vm.$el.querySelector('.js-web-ide');

spec/javascripts/vue_shared/components/diff_viewer/diff_viewer_spec.js

@@ -30,11 +30,7 @@ describe('DiffViewer', () => {
       relative_url_root: '',
     };
 
-    createComponent(
-      Object.assign({}, requiredProps, {
-        projectPath: '',
-      }),
-    );
+    createComponent({ ...requiredProps, projectPath: '' });
 
     setTimeout(() => {
       expect(vm.$el.querySelector('.deleted img').getAttribute('src')).toBe(
@@ -50,13 +46,12 @@ describe('DiffViewer', () => {
   });
 
   it('renders fallback download diff display', done => {
-    createComponent(
-      Object.assign({}, requiredProps, {
-        diffViewerMode: 'added',
-        newPath: 'test.abc',
-        oldPath: 'testold.abc',
-      }),
-    );
+    createComponent({
+      ...requiredProps,
+      diffViewerMode: 'added',
+      newPath: 'test.abc',
+      oldPath: 'testold.abc',
+    });
 
     setTimeout(() => {
       expect(vm.$el.querySelector('.deleted .file-info').textContent.trim()).toContain(
@@ -77,28 +72,26 @@ describe('DiffViewer', () => {
   });
 
   it('renders renamed component', () => {
-    createComponent(
-      Object.assign({}, requiredProps, {
-        diffMode: 'renamed',
-        diffViewerMode: 'renamed',
-        newPath: 'test.abc',
-        oldPath: 'testold.abc',
-      }),
-    );
+    createComponent({
+      ...requiredProps,
+      diffMode: 'renamed',
+      diffViewerMode: 'renamed',
+      newPath: 'test.abc',
+      oldPath: 'testold.abc',
+    });
 
     expect(vm.$el.textContent).toContain('File moved');
   });
 
   it('renders mode changed component', () => {
-    createComponent(
-      Object.assign({}, requiredProps, {
-        diffMode: 'mode_changed',
-        newPath: 'test.abc',
-        oldPath: 'testold.abc',
-        aMode: '123',
-        bMode: '321',
-      }),
-    );
+    createComponent({
+      ...requiredProps,
+      diffMode: 'mode_changed',
+      newPath: 'test.abc',
+      oldPath: 'testold.abc',
+      aMode: '123',
+      bMode: '321',
+    });
 
     expect(vm.$el.textContent).toContain('File mode changed from 123 to 321');
   });

spec/javascripts/vue_shared/components/markdown/toolbar_spec.js

@@ -25,12 +25,7 @@ describe('toolbar', () => {
 
   describe('user cannot attach file', () => {
     beforeEach(() => {
-      vm = mountComponent(
-        Toolbar,
-        Object.assign({}, props, {
-          canAttachFile: false,
-        }),
-      );
+      vm = mountComponent(Toolbar, { ...props, canAttachFile: false });
     });
 
     it('should not render uploading-container', () => {

spec/javascripts/vue_shared/components/stacked_progress_bar_spec.js

@@ -5,18 +5,15 @@ import stackedProgressBarComponent from '~/vue_shared/components/stacked_progres
 
 const createComponent = config => {
   const Component = Vue.extend(stackedProgressBarComponent);
-  const defaultConfig = Object.assign(
-    {},
-    {
-      successLabel: 'Synced',
-      failureLabel: 'Failed',
-      neutralLabel: 'Out of sync',
-      successCount: 25,
-      failureCount: 10,
-      totalCount: 5000,
-    },
-    config,
-  );
+  const defaultConfig = {
+    successLabel: 'Synced',
+    failureLabel: 'Failed',
+    neutralLabel: 'Out of sync',
+    successCount: 25,
+    failureCount: 10,
+    totalCount: 5000,
+    ...config,
+  };
 
   return mountComponent(Component, defaultConfig);
 };