Add Vue linting (#13447)

* Add Vue linting

Turns out the .vue files were not linted at all, so I added that as well
as re-indented the file to 2-space and fixed all reasonable issues that
cam up except one case of a unintended side effect for which I have no
idea how to fix it, so the rule was disabled.

* misc tweaks

* update lockfile

* use overrides to include .vue files

* treat warnings as errors on lint-frontend

* also treat stylelint warnings as errors

* use equal sign syntax

Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

web_src/js/index.js

@@ -2687,7 +2687,15 @@ function initVueComponents() {
       .replace(/height="[0-9]+"/, 'v-bind:height="size"')
       .replace(/width="[0-9]+"/, 'v-bind:width="size"');
 
-    Vue.component(name, {props: ['size'], template});
+    Vue.component(name, {
+      props: {
+        size: {
+          type: String,
+          default: '16',
+        },
+      },
+      template,
+    });
   }
 
   const vueDelimeters = ['${', '}'];
@@ -2710,7 +2718,7 @@ function initVueComponents() {
       },
       organizations: {
         type: Array,
-        default: []
+        default: () => [],
       },
       isOrganization: {
         type: Boolean,
@@ -3050,17 +3058,19 @@ function initVueApp() {
   initVueComponents();
 
   new Vue({
-    delimiters: ['${', '}'],
     el,
-    data: {
-      searchLimit: Number((document.querySelector('meta[name=_search_limit]') || {}).content),
-      suburl: AppSubUrl,
-      uid: Number((document.querySelector('meta[name=_context_uid]') || {}).content),
-      activityTopAuthors: window.ActivityTopAuthors || [],
-    },
+    delimiters: ['${', '}'],
     components: {
       ActivityTopAuthors,
     },
+    data: () => {
+      return {
+        searchLimit: Number((document.querySelector('meta[name=_search_limit]') || {}).content),
+        suburl: AppSubUrl,
+        uid: Number((document.querySelector('meta[name=_context_uid]') || {}).content),
+        activityTopAuthors: window.ActivityTopAuthors || [],
+      };
+    },
   });
 }
 
@@ -3105,24 +3115,30 @@ function initFilterBranchTagDropdown(selector) {
     });
     $data.remove();
     new Vue({
-      delimiters: ['${', '}'],
       el: this,
+      delimiters: ['${', '}'],
       data,
+      computed: {
+        filteredItems() {
+          const items = this.items.filter((item) => {
+            return ((this.mode === 'branches' && item.branch) || (this.mode === 'tags' && item.tag)) &&
+              (!this.searchTerm || item.name.toLowerCase().includes(this.searchTerm.toLowerCase()));
+          });
 
-      beforeMount() {
-        const vm = this;
-
-        this.noResults = vm.$el.getAttribute('data-no-results');
-        this.canCreateBranch = vm.$el.getAttribute('data-can-create-branch') === 'true';
-
-        document.body.addEventListener('click', (event) => {
-          if (vm.$el.contains(event.target)) {
-            return;
+          // no idea how to fix this so linting rule is disabled instead
+          this.active = (items.length === 0 && this.showCreateNewBranch ? 0 : -1); // eslint-disable-line vue/no-side-effects-in-computed-properties
+          return items;
+        },
+        showNoResults() {
+          return this.filteredItems.length === 0 && !this.showCreateNewBranch;
+        },
+        showCreateNewBranch() {
+          if (!this.canCreateBranch || !this.searchTerm || this.mode === 'tags') {
+            return false;
           }
-          if (vm.menuVisible) {
-            Vue.set(vm, 'menuVisible', false);
-          }
-        });
+
+          return this.items.filter((item) => item.name.toLowerCase() === this.searchTerm.toLowerCase()).length === 0;
+        }
       },
 
       watch: {
@@ -3133,30 +3149,16 @@ function initFilterBranchTagDropdown(selector) {
         }
       },
 
-      computed: {
-        filteredItems() {
-          const vm = this;
+      beforeMount() {
+        this.noResults = this.$el.getAttribute('data-no-results');
+        this.canCreateBranch = this.$el.getAttribute('data-can-create-branch') === 'true';
 
-          const items = vm.items.filter((item) => {
-            return ((vm.mode === 'branches' && item.branch) || (vm.mode === 'tags' && item.tag)) &&
-              (!vm.searchTerm || item.name.toLowerCase().includes(vm.searchTerm.toLowerCase()));
-          });
-
-          vm.active = (items.length === 0 && vm.showCreateNewBranch ? 0 : -1);
-
-          return items;
-        },
-        showNoResults() {
-          return this.filteredItems.length === 0 && !this.showCreateNewBranch;
-        },
-        showCreateNewBranch() {
-          const vm = this;
-          if (!this.canCreateBranch || !vm.searchTerm || vm.mode === 'tags') {
-            return false;
+        document.body.addEventListener('click', (event) => {
+          if (this.$el.contains(event.target)) return;
+          if (this.menuVisible) {
+            Vue.set(this, 'menuVisible', false);
           }
-
-          return vm.items.filter((item) => item.name.toLowerCase() === vm.searchTerm.toLowerCase()).length === 0;
-        }
+        });
       },
 
       methods: {
@@ -3169,15 +3171,12 @@ function initFilterBranchTagDropdown(selector) {
           window.location.href = item.url;
         },
         createNewBranch() {
-          if (!this.showCreateNewBranch) {
-            return;
-          }
+          if (!this.showCreateNewBranch) return;
           $(this.$refs.newBranchForm).trigger('submit');
         },
         focusSearchField() {
-          const vm = this;
           Vue.nextTick(() => {
-            vm.$refs.searchField.focus();
+            this.$refs.searchField.focus();
           });
         },
         getSelected() {
@@ -3194,15 +3193,12 @@ function initFilterBranchTagDropdown(selector) {
         },
         scrollToActive() {
           let el = this.$refs[`listItem${this.active}`];
-          if (!el || el.length === 0) {
-            return;
-          }
+          if (!el || !el.length) return;
           if (Array.isArray(el)) {
             el = el[0];
           }
 
           const cont = this.$refs.scrollContainer;
-
           if (el.offsetTop < cont.scrollTop) {
             cont.scrollTop = el.offsetTop;
           } else if (el.offsetTop + el.clientHeight > cont.scrollTop + cont.clientHeight) {
@@ -3210,49 +3206,41 @@ function initFilterBranchTagDropdown(selector) {
           }
         },
         keydown(event) {
-          const vm = this;
-          if (event.keyCode === 40) {
-            // arrow down
+          if (event.keyCode === 40) { // arrow down
             event.preventDefault();
 
-            if (vm.active === -1) {
-              vm.active = vm.getSelectedIndexInFiltered();
+            if (this.active === -1) {
+              this.active = this.getSelectedIndexInFiltered();
             }
 
-            if (vm.active + (vm.showCreateNewBranch ? 0 : 1) >= vm.filteredItems.length) {
+            if (this.active + (this.showCreateNewBranch ? 0 : 1) >= this.filteredItems.length) {
               return;
             }
-            vm.active++;
-            vm.scrollToActive();
-          }
-          if (event.keyCode === 38) {
-            // arrow up
+            this.active++;
+            this.scrollToActive();
+          } else if (event.keyCode === 38) { // arrow up
             event.preventDefault();
 
-            if (vm.active === -1) {
-              vm.active = vm.getSelectedIndexInFiltered();
+            if (this.active === -1) {
+              this.active = this.getSelectedIndexInFiltered();
             }
 
-            if (vm.active <= 0) {
+            if (this.active <= 0) {
               return;
             }
-            vm.active--;
-            vm.scrollToActive();
-          }
-          if (event.keyCode === 13) {
-            // enter
+            this.active--;
+            this.scrollToActive();
+          } else if (event.keyCode === 13) { // enter
             event.preventDefault();
 
-            if (vm.active >= vm.filteredItems.length) {
-              vm.createNewBranch();
-            } else if (vm.active >= 0) {
-              vm.selectItem(vm.filteredItems[vm.active]);
+            if (this.active >= this.filteredItems.length) {
+              this.createNewBranch();
+            } else if (this.active >= 0) {
+              this.selectItem(this.filteredItems[this.active]);
             }
-          }
-          if (event.keyCode === 27) {
-            // escape
+          } else if (event.keyCode === 27) { // escape
             event.preventDefault();
-            vm.menuVisible = false;
+            this.menuVisible = false;
           }
         }
       }