Remove client require if clients are not created (#302)

Author: trivikr

.changeset/lazy-rabbits-tickle.md

@@ -0,0 +1,5 @@
+---
+"aws-sdk-js-codemod": patch
+---
+
+Remove client require if clients are not created

src/transforms/v2-to-v3/__fixtures__/api-basic-type/global-require.output.ts

@@ -1,6 +1,3 @@
-const AWS_S3 = require("@aws-sdk/client-s3"),
-      {
-        S3
-      } = AWS_S3;
+const AWS_S3 = require("@aws-sdk/client-s3");
 
 const testTags: AWS_S3.Tag[] = [{ Key: "key", Value: "value" }];

src/transforms/v2-to-v3/__fixtures__/api-basic-type/service-require-deep.output.ts

@@ -1,6 +1,3 @@
-const AWS_S3 = require("@aws-sdk/client-s3"),
-      {
-        S3
-      } = AWS_S3;
+const AWS_S3 = require("@aws-sdk/client-s3");
 
 const testTags: AWS_S3.Tag[] = [{ Key: "key", Value: "value" }];

src/transforms/v2-to-v3/__fixtures__/api-basic-type/service-require.output.ts

@@ -1,6 +1,3 @@
-const AWS_S3 = require("@aws-sdk/client-s3"),
-      {
-        S3
-      } = AWS_S3;
+const AWS_S3 = require("@aws-sdk/client-s3");
 
 const testTags: AWS_S3.Tag[] = [{ Key: "key", Value: "value" }];

src/transforms/v2-to-v3/modules/addV3ClientRequires.ts

@@ -1,6 +1,7 @@
 import { Collection, JSCodeshift } from "jscodeshift";
 
 import { getV3ClientTypeNames } from "../ts-type";
+import { getV2ClientNewExpression } from "../utils";
 import { addV3ClientDefaultRequire } from "./addV3ClientDefaultRequire";
 import { addV3ClientNamedRequire } from "./addV3ClientNamedRequire";
 import { V3ClientModulesOptions } from "./types";
@@ -10,13 +11,20 @@ export const addV3ClientRequires = (
   source: Collection<unknown>,
   options: V3ClientModulesOptions
 ): void => {
-  const { v2ClientName, v2GlobalName } = options;
+  const { v2ClientName, v2ClientLocalName, v2GlobalName } = options;
   const v3ClientTypeNames = getV3ClientTypeNames(j, source, { v2ClientName, v2GlobalName });
 
   // Add default require for types, if needed.
   if (v3ClientTypeNames.length > 0) {
     addV3ClientDefaultRequire(j, source, options);
   }
 
-  addV3ClientNamedRequire(j, source, options);
+  const newExpressions = source.find(
+    j.NewExpression,
+    getV2ClientNewExpression({ v2ClientName, v2ClientLocalName, v2GlobalName })
+  );
+
+  if (newExpressions.length) {
+    addV3ClientNamedRequire(j, source, options);
+  }
 };