Misc linting fixes.

src/main/ipc/ipcMainHandler.settings.ts

@@ -3,11 +3,11 @@ import log from "electron-log/main";
 import _ from "lodash";
 import Store from "../store/store";
 
-const SettingsWatchedFilePathsAdd = async (event: IpcMainInvokeEvent) => {
+const SettingsWatchedFilePathsAdd = async (): Promise<string[]> => {
   const mainWindow = BrowserWindow.getAllWindows()[0]; //TODO: Filter to only main window once a proper key has been set.
   if (!mainWindow) {
     log.error("No main window found when trying to open dialog");
-    return;
+    return [];
   }
   const result = await dialog.showOpenDialog(mainWindow, {
     properties: ["openDirectory"],
@@ -25,7 +25,7 @@ const SettingsWatchedFilePathsAdd = async (event: IpcMainInvokeEvent) => {
 const SettingsWatchedFilePathsRemove = async (
   event: IpcMainInvokeEvent,
   path: string
-) => {
+): Promise<string[]> => {
   Store.set(
     "settings.filepaths",
     _.without(Store.get("settings.filepaths"), path)
@@ -34,8 +34,8 @@ const SettingsWatchedFilePathsRemove = async (
   return Store.get("settings.filepaths");
 };
 
-const SettingsWatchedFilePathsGet = async (event: IpcMainInvokeEvent) => {
-  const filepaths = Store.get("settings.filepaths");
+const SettingsWatchedFilePathsGet = async (): Promise<string[]> => {
+  const filepaths: string[] = Store.get("settings.filepaths") || [];
   return filepaths;
 };