Make transformer async (#258)

Author: trivikr

.changeset/nice-tigers-confess.md

@@ -0,0 +1,5 @@
+---
+"aws-sdk-js-codemod": patch
+---
+
+Make transformer async

src/transforms/v2-to-v3/transformer.spec.ts

@@ -42,7 +42,7 @@ describe("v2-to-v3", () => {
       async (filePrefix, fileExtension) => {
         const { input, outputCode } = await getTestMetadata(subDirPath, filePrefix, fileExtension);
 
-        const output = transform(input, {
+        const output = await transform(input, {
           j: jscodeshift,
           jscodeshift,
           // eslint-disable-next-line @typescript-eslint/no-empty-function

src/transforms/v2-to-v3/transformer.ts

@@ -14,7 +14,7 @@ import {
   replaceTSTypeReference,
 } from "./utils";
 
-export default function transformer(file: FileInfo, api: API) {
+const transformer = async (file: FileInfo, api: API) => {
   const j = isTypeScriptFile(file.path) ? api.jscodeshift.withParser("ts") : api.jscodeshift;
   const source = j(file.source);
 
@@ -56,4 +56,6 @@ export default function transformer(file: FileInfo, api: API) {
   }
 
   return source.toSource();
-}
+};
+
+export default transformer;