diff --git a/client/lib/products-values/get-jetpack-product-call-to-action.js b/client/lib/products-values/get-jetpack-product-call-to-action.js
deleted file mode 100644
index 144f8df6f2bb0..0000000000000
--- a/client/lib/products-values/get-jetpack-product-call-to-action.js
+++ /dev/null
@@ -1,20 +0,0 @@
-/**
- * Internal dependencies
- */
-import { assertValidProduct } from 'lib/products-values/utils/assert-valid-product';
-import { formatProduct } from 'lib/products-values/format-product';
-import { getJetpackProductsCallToAction } from 'lib/products-values/translations';
-
-/**
- * Get Jetpack product call-to-action based on the product purchase object.
- *
- * @param product {object} Product purchase object
- * @returns {string|object} Product display name
- */
-export function getJetpackProductCallToAction( product ) {
-	product = formatProduct( product );
-	assertValidProduct( product );
-	const jetpackProductsCallToActions = getJetpackProductsCallToAction();
-
-	return jetpackProductsCallToActions?.[ product.product_slug ];
-}
diff --git a/client/lib/products-values/get-jetpack-product-call-to-action.ts b/client/lib/products-values/get-jetpack-product-call-to-action.ts
new file mode 100644
index 0000000000000..4626642d5f3cf
--- /dev/null
+++ b/client/lib/products-values/get-jetpack-product-call-to-action.ts
@@ -0,0 +1,33 @@
+/**
+ * External dependencies
+ */
+import { TranslateResult } from 'i18n-calypso';
+
+/**
+ * Internal dependencies
+ */
+import { assertValidProduct } from 'lib/products-values/utils/assert-valid-product';
+import { formatProduct } from 'lib/products-values/format-product';
+import { getJetpackProductsCallToAction } from 'lib/products-values/translations';
+
+/**
+ * Type dependencies
+ */
+import type { Product } from 'lib/products-values/products-list';
+
+/**
+ * Get Jetpack product call-to-action based on the product purchase object.
+ *
+ * @param {object} product Product purchase object
+ * @returns {TranslateResult} Product display name
+ */
+export function getJetpackProductCallToAction( product: object ): TranslateResult | undefined {
+	product = formatProduct( product );
+	assertValidProduct( product );
+	const jetpackProductsCallToActions = getJetpackProductsCallToAction() as Record<
+		string,
+		TranslateResult
+	>;
+
+	return jetpackProductsCallToActions?.[ ( product as Product ).product_slug ];
+}