refactor shared utils to more obviously separate contexts

src/shared/debounce.ts

@@ -0,0 +1,32 @@
+/*
+ * Vencord, a modification for Discord's desktop app
+ * Copyright (c) 2022 Vendicated and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+/**
+ * Returns a new function that will call the wrapped function
+ * after the specified delay. If the function is called again
+ * within the delay, the timer will be reset.
+ * @param func The function to wrap
+ * @param delay The delay in milliseconds
+ */
+export function debounce<T extends Function>(func: T, delay = 300): T {
+    let timeout: NodeJS.Timeout;
+    return function (...args: any[]) {
+        clearTimeout(timeout);
+        timeout = setTimeout(() => { func(...args); }, delay);
+    } as any;
+}