fix: enum lists are now sets

src/emitter.ts

@@ -59,9 +59,22 @@ function emitScalar(type: Scalar): Attribute {
 }
 
 function emitArrayModel(type: ArrayModelType): Attribute {
+	const elementType = type.indexer.value;
+
+	// Enum arrays should be emitted as DynamoDB/ElectroDB "set" type
+	if (elementType.kind === "Enum") {
+		const items = Array.from(elementType.members).map(
+			([key, member]) => `${member.value ?? key}`,
+		);
+		return {
+			type: "set",
+			items,
+		};
+	}
+
 	return {
 		type: "list",
-		items: emitType(type.indexer.value) as CustomAttribute,
+		items: emitType(elementType) as CustomAttribute,
 	};
 }
 

test/entities.test.js

@@ -205,6 +205,29 @@ suite("Person Entity", () => {
 		});
 	});
 
+	suite("Set type (CoffeePreferences[] - enum array)", () => {
+		test("coffeePreferences is a set type with required: true", () => {
+			assert.equal(Person.attributes.coffeePreferences.type, "set");
+			assert.equal(Person.attributes.coffeePreferences.required, true);
+		});
+
+		test("coffeePreferences items contain enum values", () => {
+			assert.deepEqual(Person.attributes.coffeePreferences.items, [
+				"01",
+				"02",
+				"03",
+			]);
+		});
+
+		test("coffeePreferences has correct full structure", () => {
+			assert.deepEqual(Person.attributes.coffeePreferences, {
+				type: "set",
+				items: ["01", "02", "03"],
+				required: true,
+			});
+		});
+	});
+
 	suite("Index configurations", () => {
 		test("persons index (primary, pk only)", () => {
 			const personsIndex = Person.indexes.persons;

test/main.tsp

@@ -7,6 +7,18 @@ scalar String64 extends string;
 @minLength(25)
 scalar UUID extends string;
 
+enum PersonStatus {
+    ACTIVE: "01",
+    INACTIVE: "02",
+    DELETED: "03",
+}
+
+enum CoffeePreferences {
+    MILK: "01",
+    SUGAR: "02",
+    SWEETENER: "03",
+}
+
 enum CountryCode {
     NL,
     US,
@@ -91,4 +103,8 @@ model Person {
     address: Address;
     contact: Contact[];
     nickName?: string;
+
+    status: PersonStatus;
+
+    coffeePreferences: CoffeePreferences[];
 }