break session user lookup into a util function

src/lib/server/sessionutil.ts

@@ -0,0 +1,19 @@
+import {getDataSource} from './db';
+import {AuthSession} from './entity/AuthSession';
+
+/** Returns the user authorized by a given session. */
+export async function getUserFromSessionID (sessionID: string | undefined) {
+	const dataSource = await getDataSource();
+	const sessionsRepo = dataSource.getRepository(AuthSession);
+	const session = sessionID
+		? await sessionsRepo.findOne({
+			where: {id: sessionID},
+			relations: {
+				authMethod: {
+					user: true,
+				},
+			},
+		})
+		: null;
+	return session?.authMethod.user;
+}

src/routes/+layout.server.ts

@@ -1,5 +1,6 @@
 import {getDataSource} from '$lib/server/db';
 import {AuthSession} from '$lib/server/entity/AuthSession';
+import {getUserFromSessionID} from '$lib/server/sessionutil';
 
 import type {LayoutServerLoad} from './$types';
 
@@ -12,23 +13,7 @@ async function findSession (sessionID?: string) {
 }
 
 export const load: LayoutServerLoad = async ({cookies}) => {
-	const sessionID = cookies.get('sessionid');
+	return JSON.parse(JSON.stringify({
-	const dataSource = await getDataSource();
+		user: await getUserFromSessionID(cookies.get('sessionid')),
-	const sessionsRepo = dataSource.getRepository(AuthSession);
+	}));
-	const session = sessionID
-		? await sessionsRepo.findOne({
-			where: {id: sessionID},
-			relations: {
-				authMethod: {
-					user: true,
-				},
-			},
-		})
-		: null;
-
-	return {
-		user: session
-			? JSON.parse(JSON.stringify(session.authMethod.user))
-			: null,
-	};
 };