Move utils to root

frontend/src/utils/utils.ts

@@ -0,0 +1,46 @@
+/**
+ * @fileoverview Utility functions used throughout the application
+ * @description Contains helper functions for common operations
+ * @author Cursor
+ * @version 1.0.0
+ */
+
+/**
+ * Formats a timestamp string to HH:MM format
+ * @param {string} dateString - ISO timestamp string to format
+ * @returns {string} Formatted time string in HH:MM format
+ * @example
+ * formatTime('2024-01-15T14:30:00Z'); // Returns "14:30"
+ */
+export function formatTime(dateString: string): string {
+    const date = new Date(dateString);
+    let hours = date.getHours();
+    let minutes = date.getMinutes();
+    const hoursString = hours < 10 ? '0' + hours : hours;
+    const minutesString = minutes < 10 ? '0' + minutes : minutes;
+    return hoursString + ':' + minutesString;
+}
+
+/**
+ * Creates a promise that resolves after a specified delay
+ * @param {number} ms - Delay time in milliseconds
+ * @returns {Promise<void>} Promise that resolves after the delay
+ * @example
+ * await delay(1000); // Wait for 1 second
+ */
+export function delay(ms: number): Promise<void> {
+    return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+
+export function b64(a: Uint8Array): string { return btoa(String.fromCharCode(...a)); }
+export function ub64(s: string): Uint8Array {
+	const bin = atob(s);
+	const arr = new Uint8Array(bin.length);
+	for (let i = 0; i < bin.length; i++) arr[i] = bin.charCodeAt(i);
+	return arr;
+}
+
+export function id<T extends Element = HTMLElement>(id: string): T {
+    return document.getElementById(id) as unknown as T
+}