Fixed Serverless examples: they were not returning 400 if model name was not provided

examples/serverless/src/functions/barcodes.ts

@@ -1,13 +1,20 @@
 import { ALBEvent, ALBResult } from "aws-lambda";
 import { PKPass } from "../../../../lib";
-import { finish400WithoutModelName, createPassGenerator } from "../shared";
+import {
+	throwClientErrorWithoutModelName,
+	createPassGenerator,
+} from "../shared";
 
 /**
  * Lambda for barcodes example
  */
 
 export async function barcodes(event: ALBEvent) {
-	finish400WithoutModelName(event);
+	try {
+		throwClientErrorWithoutModelName(event);
+	} catch (err) {
+		return err;
+	}
 
 	const { modelName, alt, ...passOptions } = event.queryStringParameters;
 

examples/serverless/src/functions/expirationDate.ts

@@ -1,14 +1,20 @@
-import { ALBEvent, ALBResult } from "aws-lambda";
-import { Context } from "vm";
+import { ALBEvent, ALBResult, Context } from "aws-lambda";
 import { PKPass } from "passkit-generator";
-import { finish400WithoutModelName, createPassGenerator } from "../shared";
+import {
+	throwClientErrorWithoutModelName,
+	createPassGenerator,
+} from "../shared";
 
 /**
  * Lambda for expirationDate example
  */
 
 export async function expirationDate(event: ALBEvent, context: Context) {
-	finish400WithoutModelName(event);
+	try {
+		throwClientErrorWithoutModelName(event);
+	} catch (err) {
+		return err;
+	}
 
 	const { modelName, ...passOptions } = event.queryStringParameters;
 

examples/serverless/src/functions/localize.ts

@@ -1,4 +1,7 @@
-import { finish400WithoutModelName, createPassGenerator } from "../shared";
+import {
+	throwClientErrorWithoutModelName,
+	createPassGenerator,
+} from "../shared";
 import type { ALBEvent, ALBResult } from "aws-lambda";
 import type { PKPass } from "passkit-generator";
 
@@ -7,7 +10,11 @@ import type { PKPass } from "passkit-generator";
  */
 
 export async function localize(event: ALBEvent) {
-	finish400WithoutModelName(event);
+	try {
+		throwClientErrorWithoutModelName(event);
+	} catch (err) {
+		return err;
+	}
 
 	const { modelName, ...passOptions } = event.queryStringParameters;
 

examples/serverless/src/functions/pkpasses.ts

@@ -1,3 +1,34 @@
+/**
+ * PKPasses generation through PKPass.pack static method
+ * example.
+ * Here it is showed manual model reading and
+ * creating through another PKPass because in the other
+ * examples, creation through templates is already shown
+ *
+ * PLEASE NOTE THAT, AT TIME OF WRITING, THIS EXAMPLE WORKS
+ * ONLY IF PASSES ARE DOWNLOADED FROM SAFARI, due to the
+ * support of PKPasses archives. To test this, you might
+ * need to open a tunnel through NGROK if you cannot access
+ * to your local machine (in my personal case, developing
+ * under WSL is a pretty big limitation sometimes).
+ *
+ * PLEASE ALSO NOTE that, AT TIME OF WRITING (iOS 15.0 - 15.2)
+ * Pass Viewer suffers of a really curious bug: issuing several
+ * passes within the same pkpasses archive, all with the same
+ * serialNumber, will lead to have a broken view and to add
+ * just one pass. You can see the screenshots below:
+ *
+ * https://imgur.com/bDTbcDg.jpg
+ * https://imgur.com/Y4GpuHT.jpg
+ * https://i.imgur.com/qbJMy1d.jpg
+ *
+ * - "Alberto, come to look at APPLE."
+ * **Alberto looks**
+ * - "MAMMA MIA!""
+ *
+ * A feedback to Apple have been sent for this.
+ */
+
 import { ALBEvent } from "aws-lambda";
 import { PKPass } from "passkit-generator";
 import {
@@ -5,7 +36,7 @@ import {
 	getSpecificFileInModel,
 	getS3Instance,
 	getRandomColorPart,
-	finish400WithoutModelName,
+	throwClientErrorWithoutModelName,
 } from "../shared";
 import config from "../../config.json";
 
@@ -14,7 +45,13 @@ import config from "../../config.json";
  */
 
 export async function pkpasses(event: ALBEvent) {
-	finish400WithoutModelName(event);
+	try {
+		throwClientErrorWithoutModelName(event);
+	} catch (err) {
+		return err;
+	}
+
+	console.log(event.queryStringParameters);
 
 	const [certificates, iconFromModel, s3] = await Promise.all([
 		getCertificates(),

examples/serverless/src/shared.ts

@@ -7,17 +7,15 @@ import { PKPass } from "passkit-generator";
 
 const S3: { instance: AWS.S3 } = { instance: undefined };
 
-export function finish400WithoutModelName(event: ALBEvent) {
-	if (event.queryStringParameters?.modelName) {
-		return;
+export function throwClientErrorWithoutModelName(event: ALBEvent) {
+	if (!event.queryStringParameters?.modelName) {
+		throw {
+			statusCode: 400,
+			body: JSON.stringify({
+				message: "modelName is missing in query params",
+			}),
+		};
 	}
-
-	return {
-		statusCode: 400,
-		body: JSON.stringify({
-			message: "modelName is missing in query params",
-		}),
-	};
 }
 
 export function getRandomColorPart() {