feat(medusa): Migrate utils to TS (#1415)

packages/medusa/src/services/region.js

@@ -326,8 +326,10 @@ class RegionService extends BaseService {
     )
 
     const countryCode = code.toUpperCase()
-    const validCountry = countries.find((c) => c.alpha2 === countryCode)
+    const isCountryExists = countries.some(
-    if (!validCountry) {
+      (country) => country.alpha2 === countryCode
+    )
+    if (!isCountryExists) {
       throw new MedusaError(
         MedusaError.Types.INVALID_DATA,
         "Invalid country code"

packages/medusa/src/utils/countries.ts

@@ -1,4 +1,11 @@
-export const countries = [
+export type Country = {
+  alpha2: string
+  name: string
+  alpha3: string
+  numeric: string
+}
+
+export const countries: Country[] = [
   { alpha2: "AF", name: "Afghanistan", alpha3: "AFG", numeric: "004" },
   { alpha2: "AL", name: "Albania", alpha3: "ALB", numeric: "008" },
   { alpha2: "DZ", name: "Algeria", alpha3: "DZA", numeric: "012" },

packages/medusa/src/utils/format-registration-name.ts

@@ -1,20 +1,20 @@
-import path from "path"
+import { parse } from "path"
 
 /**
  * Formats a filename into the correct container resolution name.
  * Names are camelCase formatted and namespaced by the folder i.e:
  * models/example-person -> examplePersonModel
- * @param {string} fn - the full path of the file
+ * @param path - the full path of the file
- * @return {string} the formatted name
+ * @return the formatted name
  */
-function formatRegistrationName(fn) {
+function formatRegistrationName(path: string): string {
-  const parsed = path.parse(fn)
+  const parsed = parse(path)
-  const parsedDir = path.parse(parsed.dir)
+  const parsedDir = parse(parsed.dir)
 
   const rawname = parsed.name
   let namespace = parsedDir.name
   if (namespace.startsWith("__")) {
-    const parsedCoreDir = path.parse(parsedDir.dir)
+    const parsedCoreDir = parse(parsedDir.dir)
     namespace = parsedCoreDir.name
   }