refactor(files): Fix nullish operator usage and add missing code comment

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

Author: susnux

apps/files/src/components/FileEntry/FileEntryActions.vue

@@ -81,15 +81,14 @@ import type { PropType } from 'vue'
 import { DefaultType, FileAction, Node, NodeStatus, View, getFileActions } from '@nextcloud/files'
 import { showError, showSuccess } from '@nextcloud/dialogs'
 import { translate as t } from '@nextcloud/l10n'
+import { defineComponent } from 'vue'
 
 import NcActionButton from '@nextcloud/vue/dist/Components/NcActionButton.js'
 import NcActions from '@nextcloud/vue/dist/Components/NcActions.js'
 import NcActionSeparator from '@nextcloud/vue/dist/Components/NcActionSeparator.js'
 import NcIconSvgWrapper from '@nextcloud/vue/dist/Components/NcIconSvgWrapper.js'
 import NcLoadingIcon from '@nextcloud/vue/dist/Components/NcLoadingIcon.js'
 import ArrowLeftIcon from 'vue-material-design-icons/ArrowLeft.vue'
-import Vue, { defineComponent } from 'vue'
-
 import CustomElementRender from '../CustomElementRender.vue'
 
 import logger from '../../logger.js'
@@ -270,7 +269,7 @@ export default defineComponent({
 			try {
 				// Set the loading marker
 				this.$emit('update:loading', action.id)
-				Vue.set(this.source, 'status', NodeStatus.LOADING)
+				this.$set(this.source, 'status', NodeStatus.LOADING)
 
 				const success = await action.exec(this.source, this.currentView, this.currentDir)
 
@@ -290,7 +289,7 @@ export default defineComponent({
 			} finally {
 				// Reset the loading marker
 				this.$emit('update:loading', '')
-				Vue.set(this.source, 'status', undefined)
+				this.$set(this.source, 'status', undefined)
 
 				// If that was a submenu, we just go back after the action
 				if (isSubmenu) {

apps/files/src/components/FileEntryMixin.ts

@@ -54,14 +54,14 @@ export default defineComponent({
 
 		currentDir() {
 			// Remove any trailing slash but leave root slash
-			return (this.$route?.query?.dir?.toString() || '/').replace(/^(.+)\/$/, '$1')
+			return (this.$route.query?.dir?.toString() || '/').replace(/^(.+)\/$/, '$1')
 		},
 		currentFileId() {
 			return this.$route.params?.fileid || this.$route.query?.fileid || null
 		},
 
 		fileid() {
-			return this.source?.fileid
+			return this.source.fileid ?? 0
 		},
 		uniqueId() {
 			return hashCode(this.source.source)

apps/files/src/utils/hashUtils.ts

@@ -3,6 +3,11 @@
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
+/**
+ * Simple non-secure hashing function similar to Java's `hashCode`
+ * @param str The string to hash
+ * @return {number} a non secure hash of the string
+ */
 export const hashCode = function(str: string): number {
 	let hash = 0
 	for (let i = 0; i < str.length; i++) {