standardize arrow functions, use implicit types where applicable

src/Model/Chat/chatListModel.ts

@@ -15,7 +15,7 @@ export default class ChatListModel {
     connectionModel: ConnectionModel;
 
     // data
-    chatModels = new Set<ChatModel>();
+    chatModels: Set<ChatModel> = new Set<ChatModel>();
 
     // handlers
     messageHandler = (data: Message): void => {

src/Model/Chat/chatModel.ts

@@ -10,7 +10,6 @@ import {
     HandlerManager,
     createTimestamp,
     localeCompare,
-    parse,
     parseValidObject,
     stringify,
 } from "../Utility/utility";

src/Model/Files/boardsAndTasksModel.ts

@@ -23,9 +23,8 @@ export default class BoardsAndTasksModel {
     calendarModel: CalendarModel;
 
     // data
-    boardHandlerManager: HandlerManager<BoardInfoFileContent> =
-        new HandlerManager();
-    taskHandlerManager: HandlerManager<TaskFileContent> = new HandlerManager();
+    boardHandlerManager = new HandlerManager<BoardInfoFileContent>();
+    taskHandlerManager = new HandlerManager<TaskFileContent>();
 
     // paths
     getBasePath = (): string[] => {

src/Model/Global/connectionModel.ts

@@ -20,12 +20,10 @@ export default class ConnectionModel {
         return this.udn.ws?.url;
     }
 
-    connectionChangeHandlerManager: HandlerManager<void> = new HandlerManager();
-    messageHandlerManager: HandlerManager<Message> = new HandlerManager();
-    messageSentHandlerManager: HandlerManager<ChatMessage> =
-        new HandlerManager();
-
-    channelsToSubscribe: Set<string> = new Set();
+    connectionChangeHandlerManager = new HandlerManager<void>();
+    messageHandlerManager = new HandlerManager<Message>();
+    messageSentHandlerManager = new HandlerManager<ChatMessage>();
+    channelsToSubscribe = new Set<string>();
 
     // handlers
     handleMessage = (data: Message): void => {

src/Model/Global/fileTransferModel.ts

@@ -20,9 +20,9 @@ export default class FileTransferModel {
     static READY_MESSAGE = "ready";
 
     // data
-    transferData: TransferData | undefined;
-    fileHandlerManager: HandlerManager<string> = new HandlerManager();
-    readyToSendHandlerManager: HandlerManager<boolean> = new HandlerManager();
+    transferData: TransferData | undefined = undefined;
+    fileHandlerManager = new HandlerManager<string>();
+    readyToSendHandlerManager = new HandlerManager<boolean>();
     direction: TransferDirections = TransferDirections.Send;
 
     // general

src/Model/Global/settingsModel.ts

@@ -23,30 +23,30 @@ export default class SettingsModel {
         this.storageModel.write(path, value);
     }
 
-    setName(newValue: string): void {
+    setName = (newValue: string): void => {
         this.username = newValue;
         this.storeSetting("username", newValue);
     }
 
-    setFirstDayOfWeek(newValue: string): void {
+    setFirstDayOfWeek = (newValue: string): void => {
         this.firstDayOfWeek = newValue;
         this.storeSetting("firstDayOfWeek", newValue);
     }
 
-    setLanguage(newValue: string): void {
+    setLanguage = (newValue: string): void => {
         this.language = newValue;
         this.storeSetting("language", newValue);
     }
 
-    setTheme(newValue: string): void {
+    setTheme = (newValue: string): void => {
         this.theme = newValue;
         this.storeSetting("theme", newValue);
     }
 
     // load
-    private readSetting(
+    private readSetting = (
         pathName: keyof typeof filePaths.settingsModel,
-    ): string {
+    ): string => {
         const path = StorageModel.getPath(
             StorageModelSubPaths.SettingsModel,
             filePaths.settingsModel[pathName],
@@ -54,22 +54,22 @@ export default class SettingsModel {
         return this.storageModel.read(path);
     }
 
-    loadUsername(): void {
+    loadUsername = (): void => {
         const content = this.readSetting("username");
         this.username = content ?? "";
     }
 
-    loadFirstDayofWeek(): void {
+    loadFirstDayofWeek = (): void => {
         const content = this.readSetting("firstDayOfWeek");
         this.firstDayOfWeek = content ?? "0";
     }
 
-    loadLanguage(): void {
+    loadLanguage = (): void => {
         const content = this.readSetting("language");
         this.language = content ?? SettingsModel.getSystemLanguage();
     }
 
-    loadTheme(): void {
+    loadTheme = (): void => {
         const content = this.readSetting("theme");
         this.theme = content ?? ThemeSettings.System;
     }

src/Model/Utility/utility.ts

@@ -173,7 +173,7 @@ export function checkDoesObjectMatchSearch<T>(
 export type Handler<T> = (item: T) => void;
 
 export class HandlerManager<T> {
-    handlers: Set<Handler<T>> = new Set();
+    handlers = new Set<Handler<T>>();
 
     // manage
     addHandler = (handler: Handler<T>): void => {

src/ViewModel/Chat/chatListViewModel.ts

@@ -14,7 +14,7 @@ export default class ChatListViewModel {
     notificationViewModel: NotificationViewModel;
 
     // data
-    chatIndexManager: IndexManager<ChatViewModel> = new IndexManager(
+    chatIndexManager = new IndexManager<ChatViewModel>(
         (chatViewModel: ChatViewModel) =>
             chatViewModel.settingsPageViewModel.primaryChannel.value,
     );

src/ViewModel/Global/fileTransferViewModel.ts

@@ -13,7 +13,7 @@ import CoreViewModel, { Context } from "./coreViewModel";
 import { CommonKeys } from "../../View/keystrokes";
 
 export default class FileTransferViewModel extends Context {
-    contextDebugDescription = "transfer";
+    contextDebugDescription: string = "transfer";
 
     // state
     presentedModal: React.State<FileTransferModals | undefined> =

src/ViewModel/Global/settingsViewModel.ts

@@ -5,7 +5,7 @@ import { Languages, ThemeSettings } from "../../Model/Global/settingsModel";
 import { CommonKeys } from "../../View/keystrokes";
 
 export default class SettingsViewModel extends Context {
-    contextDebugDescription = "settings";
+    contextDebugDescription: string = "settings";
 
     // state
     username: React.State<string> = new React.State("");

src/ViewModel/Pages/boardViewModel.ts

@@ -16,7 +16,7 @@ import TaskViewModel from "./taskViewModel";
 import { CommonKeys } from "../../View/keystrokes";
 
 export default class BoardViewModel extends TaskContainingPageViewModel {
-    contextDebugDescription = "board";
+    contextDebugDescription: string = "board";
 
     // state
     name: React.State<string> = new React.State("");

src/ViewModel/Pages/taskContainingPageViewModel.ts

@@ -11,7 +11,7 @@ import TaskViewModel from "./taskViewModel";
 
 export default class TaskContainingPageViewModel extends Context {
     // state
-    taskIndexManager: IndexManager<TaskViewModel> = new IndexManager(
+    taskIndexManager = new IndexManager<TaskViewModel>(
         (taskViewModel: TaskViewModel) => taskViewModel.sortingString,
     );
 

src/ViewModel/Pages/taskPageViewModel.ts

@@ -11,10 +11,10 @@ import { IndexManager } from "../../Model/Utility/utility";
 import { CommonKeys } from "../../View/keystrokes";
 
 export default class TaskPageViewModel extends ContextHost<string> {
-    contextDebugDescription = "task-page";
+    contextDebugDescription: string = "task-page";
 
     // data
-    boardIndexManager: IndexManager<BoardViewModel> = new IndexManager(
+    boardIndexManager = new IndexManager<BoardViewModel>(
         (boardViewModel: BoardViewModel) => boardViewModel.name.value,
     );
 

src/ViewModel/Utility/taskPropertyBulkChangeViewModel.ts

@@ -19,7 +19,7 @@ export default class TaskPropertyBulkChangeViewModel {
         });
     };
 
-    setValue: (newValue: string, taskViewModel: TaskViewModel) => void;
+    setValue: (newValue: string, taskViewModel: TaskViewModel) => void = () => {};
 
     // init
     constructor(