fix(account-client-copy): returns undefined instead of promise

Co-Authored-By: Haroen Viaene <[email protected]>

Author: nunomaduro

packages/client-account/src/__tests__/integration/account-copy-index.test.ts

@@ -100,7 +100,7 @@ describe(testSuite.testName, () => {
       .algoliasearch(`${process.env.ALGOLIA_APPLICATION_ID_2}`, addApiKeyResponse.key)
       .initIndex(indexName);
 
-    await expect(accountCopyIndex(source, destination)).rejects.toMatchObject({
+    await expect(accountCopyIndex(source, destination).wait()).rejects.toMatchObject({
       name: 'ApiError',
       message: 'Not enough rights to update an object near line:1 column:64',
       status: 400,

packages/client-account/src/methods/accountCopyIndex.ts

@@ -64,7 +64,7 @@ export const accountCopyIndex = (
      * we need to resolve that array of async responses using a
      * `Promise.all`, and then resolve `void` for the end-user.
      */
-    promise.then(() => Promise.all(responses)).then(() => Promise.resolve()),
+    promise.then(() => Promise.all(responses)).then(() => undefined),
 
     /**
      * Next, if the end-user calls the `wait` method, we need to also call