Hooks: Add request event handler for authentication

src/routes/+layout.server.ts

@@ -0,0 +1,19 @@
+import type { LayoutServerLoad } from "./$types";
+
+// On each page load (every route), this function runs serverside.
+// The "locals.user" object is only available on the server,
+// since it's populated inside hooks.server.ts.
+// It will populate the "user" attribute of each page's "data" object,
+// so each page has access to the current user (or knows if no one is signed in).
+export const load: LayoutServerLoad = ({ locals }) => {
+  if (locals.user) {
+    return {
+      user: locals.user,
+      admin: locals.user.admin,
+    };
+  }
+
+  return {
+    user: undefined,
+  };
+};