copilotkit__copilotkit/docs/lib/utils.ts

import { clsx, type ClassValue } from "clsx";
import { twMerge } from "tailwind-merge";

export function cn(...inputs: ClassValue[]) {
  return twMerge(clsx(inputs));
}

/**
 * Generate a UUID with fallback for environments where crypto.randomUUID() is not available
 * (e.g., older browsers, some mobile browsers)
 */
export function generateUUID(): string {
  if (typeof crypto !== "undefined" && crypto.randomUUID) {
    return crypto.randomUUID();
  }

  // Fallback: Generate a UUID-like string
  // Format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
  return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, (c) => {
    const r = (Math.random() * 16) | 0;
    const v = c === "x" ? r : (r & 0x3) | 0x8;
    return v.toString(16);
  });
}