switch to using export default for loaders

Author: lobsterkatie

packages/nextjs/src/config/loaders/dataFetchersLoader.ts

@@ -79,7 +79,7 @@ function wrapFunctions(userCode: string, templateCode: string, filepath: string)
 /**
  * Wrap `getStaticPaths`, `getStaticProps`, and `getServerSideProps` (if they exist) in the given page code
  */
-function wrapDataFetchersLoader(this: LoaderThis<LoaderOptions>, userCode: string): string {
+export default function wrapDataFetchersLoader(this: LoaderThis<LoaderOptions>, userCode: string): string {
   // We know one or the other will be defined, depending on the version of webpack being used
   // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
   const { projectDir } = this.getOptions ? this.getOptions() : this.query!;
@@ -113,5 +113,3 @@ function wrapDataFetchersLoader(this: LoaderThis<LoaderOptions>, userCode: strin
   );
   return `${modifiedUserCode}\n${injectedCode}`;
 }
-
-export { wrapDataFetchersLoader as default };

packages/nextjs/src/config/loaders/prefixLoader.ts

@@ -10,7 +10,7 @@ type LoaderOptions = {
 /**
  * Inject templated code into the beginning of a module.
  */
-function prefixLoader(this: LoaderThis<LoaderOptions>, userCode: string): string {
+export default function prefixLoader(this: LoaderThis<LoaderOptions>, userCode: string): string {
   // We know one or the other will be defined, depending on the version of webpack being used
   // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
   const { distDir } = this.getOptions ? this.getOptions() : this.query!;
@@ -25,5 +25,3 @@ function prefixLoader(this: LoaderThis<LoaderOptions>, userCode: string): string
 
   return `${templateCode}\n${userCode}`;
 }
-
-export { prefixLoader as default };