move incrementalCacheHandlerPath check as suggested in PR review

packages/next-on-pages/src/buildApplication/buildCacheFiles.ts

@@ -17,36 +17,34 @@ export async function buildCacheFiles(
 ): Promise<void> {
 	const outputCacheDir = join(nopDistDir, 'cache');
 
-	const customCacheHandlerBuilt = await buildCustomIncrementalCacheHandler(
-		outputCacheDir,
-		minify,
-	);
+	const nextConfig = await getNextConfig();
+
+	const incrementalCacheHandlerPath =
+		nextConfig?.experimental?.incrementalCacheHandlerPath;
 
-	if (!customCacheHandlerBuilt) {
+	if (incrementalCacheHandlerPath) {
+		await buildCustomIncrementalCacheHandler(
+			incrementalCacheHandlerPath,
+			outputCacheDir,
+			minify,
+		);
+	} else {
 		await buildBuiltInCacheHandlers(templatesDir, outputCacheDir, minify);
 	}
 }
 
 /**
- * Builds the file implementing the custom cache handler provided by the user, if one was provided.
+ * Builds the file implementing the custom cache handler provided by the user.
  *
+ * @param incrementalCacheHandlerPath path to the user defined incremental cache handler
  * @param outputCacheDir path to the directory in which to write the file
- * @param minify flag indicating wether minification should be applied to the cache files
- * @returns true if the file was built, false otherwise (meaning that the user has not provided a custom cache handler)
+ * @param minify flag indicating wether minification should be applied to the output file
  */
 async function buildCustomIncrementalCacheHandler(
+	incrementalCacheHandlerPath: string,
 	outputCacheDir: string,
 	minify: boolean,
-): Promise<boolean> {
-	const nextConfig = await getNextConfig();
-
-	const incrementalCacheHandlerPath =
-		nextConfig?.experimental?.incrementalCacheHandlerPath;
-
-	if (!incrementalCacheHandlerPath) {
-		return false;
-	}
-
+): Promise<void> {
 	try {
 		await build({
 			entryPoints: [incrementalCacheHandlerPath],
@@ -61,7 +59,6 @@ async function buildCustomIncrementalCacheHandler(
 			`Failed to build custom incremental cache handler from the following provided path: ${incrementalCacheHandlerPath}`,
 		);
 	}
-	return true;
 }
 
 /**