Update Convex with no payload to be just like convex with payload but without payload

packages/backend/convex/custom/auth/providers/usesend.ts

@@ -11,32 +11,35 @@ export default function UseSendProvider(config: EmailUserConfig): EmailConfig {
     from: process.env.USESEND_FROM_EMAIL ?? 'noreply@example.com',
     maxAge: 24 * 60 * 60, // 24 hours
 
-    async generateVerificationToken() {
+    generateVerificationToken: () => {
       const random: RandomReader = {
-        read(bytes) {
-          crypto.getRandomValues(bytes);
+        read: (bytes) => {
+          crypto.getRandomValues(bytes as Uint8Array<ArrayBuffer>);
         },
       };
       return generateRandomString(random, alphabet('0-9'), 6);
     },
 
-    async sendVerificationRequest(params) {
+    sendVerificationRequest: async (params) => {
       const { identifier: to, provider, url, token } = params;
       // Derive a display name from the site URL, fallback to 'App'
       const siteUrl = process.env.USESEND_FROM_EMAIL ?? '';
       const appName = siteUrl.split('@')[1]?.split('.')[0] ?? 'App';
 
-      const useSend = new UseSend(
-        process.env.USESEND_API_KEY!,
-        process.env.USESEND_URL!,
-      );
+      const apiKey = process.env.USESEND_API_KEY;
+      const useSendUrl = process.env.USESEND_URL;
+      if (!apiKey || !useSendUrl) {
+        throw new Error('USESEND_API_KEY and USESEND_URL must be set.');
+      }
+
+      const useSend = new UseSend(apiKey, useSendUrl);
 
       // For password reset, we want to send the code, not the magic link
       const isPasswordReset =
-        url.includes('reset') || provider.id?.includes('reset');
+        url.includes('reset') || provider.id.includes('reset');
 
       const result = await useSend.emails.send({
-        from: provider.from!,
+        from: provider.from ?? 'noreply@example.com',
         to: [to],
         subject: isPasswordReset
           ? `Reset your password - ${appName}`