feat: allow undefined serializer in composeSerializers

prismicio · Dec 16, 2021 · a646491 · a646491
1 parent e14dc3d
commit a646491
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Showing 2 changed files with 22 additions and 7 deletions.
diff --git a/src/composeSerializers.ts b/src/composeSerializers.ts
@@ -13,17 +13,21 @@ import { RichTextFunctionSerializer } from "./types";
  * @returns Composed serializer
  */
 export const composeSerializers = <SerializerReturnType>(
-	...serializers: [
-		RichTextFunctionSerializer<SerializerReturnType>,
-		...RichTextFunctionSerializer<SerializerReturnType>[]
-	]
+	...serializers: (
+		| RichTextFunctionSerializer<SerializerReturnType>
+		| undefined
+	)[]
 ): RichTextFunctionSerializer<SerializerReturnType> => {
 	return (...args) => {
 		for (let i = 0; i < serializers.length; i++) {
-			const res = serializers[i](...args);
+			const serializer = serializers[i];
 
-			if (res != null) {
-				return res;
+			if (serializer) {
+				const res = serializer(...args);
+
+				if (res != null) {
+					return res;
+				}
 			}
 		}
 	};

diff --git a/test/composeSerializers.test.ts b/test/composeSerializers.test.ts
@@ -22,3 +22,14 @@ test("composes multiple serializers", (t) => {
 
 	t.snapshot(composedSerialization);
 });
+
+test("undefined serializers are ignored", (t) => {
+	const richTextFixtures = createRichTextFixtures();
+
+	const serializer = wrapMapSerializer(htmlMapSerializer);
+
+	t.deepEqual(
+		serialize(richTextFixtures.en, composeSerializers(undefined, serializer)),
+		serialize(richTextFixtures.en, serializer),
+	);
+});