Working nice, looks like shit

src/routes/auth/+page.server.ts

@@ -7,8 +7,17 @@ export const actions: Actions = {
     const formData = await request.formData()
     const email = formData.get('email') as string
     const password = formData.get('password') as string
+    const display_name = formData.get('display_name') as string
 
-    const { error } = await supabase.auth.signUp({ email, password })
+    const { error } = await supabase.auth.signUp({
+      email,
+      password,
+      options: {
+        data: {
+          display_name: display_name
+        }
+      }
+    });
     if (error) {
       console.error(error)
       redirect(303, '/auth/error')

src/routes/auth/+page.svelte

@@ -7,6 +7,10 @@
     Password
     <input name="password" type="password" />
   </label>
+  <label>
+    Display name
+    <input name="display_name" type="text" />
+  </label>
   <button>Login</button>
   <button formaction="?/signup">Sign up</button>
 </form>