feat: convert to nextjs

context/toast/ToastContext.ts

@@ -0,0 +1,23 @@
+import { createContext, useContext } from 'react';
+
+export interface Toast {
+  id: number;
+  message: string;
+}
+
+interface ToastContextType {
+  showToast: (message: string) => void;
+  toasts: Toast[];
+}
+
+export const ToastContext = createContext<ToastContextType | undefined>(
+  undefined
+);
+
+export const useToast = () => {
+  const context = useContext(ToastContext);
+  if (!context) {
+    throw new Error('useToast must be used within a ToastProvider');
+  }
+  return context;
+};