Refactor code to comply with ESLint rules

Major refactoring using ESLint with rules from AirBnb and Vue.

Enable most of the ESLint rules and do necessary linting in the code.
Also add more information for rules that are disabled to describe what
they are and why they are disabled.

Allow logging (`console.log`) in test files, and in development mode
(e.g. when working with `npm run serve`), but disable it when
environment is production (as pre-configured by Vue). Also add flag
(`--mode production`) in `lint:eslint` command so production linting is
executed earlier in lifecycle.

Disable rules that requires a separate work. Such as ESLint rules that
are broken in TypeScript: no-useless-constructor (eslint/eslint#14118)
and no-shadow (eslint/eslint#13014).

src/presentation/components/Scripts/Menu/View/TheViewChanger.vue

@@ -1,21 +1,21 @@
 <template>
-    <MenuOptionList
-        label="View"
-        class="part">
-        <MenuOptionListItem
-            v-for="view in this.viewOptions" :key="view.type"
-            :label="view.displayName"
-            :enabled="currentView !== view.type"
-            @click="setView(view.type)"
-        />
-    </MenuOptionList>
+  <MenuOptionList
+    label="View"
+    class="part">
+    <MenuOptionListItem
+      v-for="view in this.viewOptions" :key="view.type"
+      :label="view.displayName"
+      :enabled="currentView !== view.type"
+      @click="setView(view.type)"
+    />
+  </MenuOptionList>
 </template>
 
 <script lang="ts">
 import { Component, Vue } from 'vue-property-decorator';
+import MenuOptionList from '../MenuOptionList.vue';
+import MenuOptionListItem from '../MenuOptionListItem.vue';
 import { ViewType } from './ViewType';
-import MenuOptionList from './../MenuOptionList.vue';
-import MenuOptionListItem from './../MenuOptionListItem.vue';
 
 const DefaultView = ViewType.Cards;
 
@@ -26,32 +26,35 @@ const DefaultView = ViewType.Cards;
   },
 })
 export default class TheViewChanger extends Vue {
-    public readonly viewOptions: IViewOption[] = [
-        { type: ViewType.Cards, displayName: 'Cards' },
-        { type: ViewType.Tree, displayName: 'Tree' },
-    ];
-    public ViewType = ViewType;
-    public currentView?: ViewType = null;
+  public readonly viewOptions: IViewOption[] = [
+    { type: ViewType.Cards, displayName: 'Cards' },
+    { type: ViewType.Tree, displayName: 'Tree' },
+  ];
 
-    public mounted() {
-        this.setView(DefaultView);
-    }
-    public groupBy(type: ViewType) {
-        this.setView(type);
-    }
+  public ViewType = ViewType;
 
-    private setView(view: ViewType) {
-        if (this.currentView === view) {
-            throw new Error(`View is already "${ViewType[view]}"`);
-        }
-        this.currentView = view;
-        this.$emit('viewChanged', this.currentView);
+  public currentView?: ViewType = null;
+
+  public mounted() {
+    this.setView(DefaultView);
+  }
+
+  public groupBy(type: ViewType) {
+    this.setView(type);
+  }
+
+  private setView(view: ViewType) {
+    if (this.currentView === view) {
+      throw new Error(`View is already "${ViewType[view]}"`);
     }
+    this.currentView = view;
+    this.$emit('viewChanged', this.currentView);
+  }
 }
 
 interface IViewOption {
-    readonly type: ViewType;
-    readonly displayName: string;
+  readonly type: ViewType;
+  readonly displayName: string;
 }
 
 </script>

src/presentation/components/Scripts/Menu/View/ViewType.ts

@@ -1,4 +1,4 @@
 export enum ViewType {
-    Cards = 1,
-    Tree = 0,
+  Cards = 1,
+  Tree = 0,
 }