diff --git a/src/ModuleLoader.ts b/src/ModuleLoader.ts
index 7fd31350013..e23ce2cc501 100644
--- a/src/ModuleLoader.ts
+++ b/src/ModuleLoader.ts
@@ -549,12 +549,14 @@ export class ModuleLoader {
 		};
 	}
 
-	private async handleExistingModule(module: Module, isEntry: boolean, isPreload: PreloadType) {
+	private async handleExistingModule(
+		module: Module,
+		isEntry: boolean,
+		isPreload: PreloadType
+	): Promise<void> {
 		const loadPromise = this.moduleLoadPromises.get(module)!;
 		if (isPreload) {
-			return isPreload === RESOLVE_DEPENDENCIES
-				? waitForDependencyResolution(loadPromise)
-				: loadPromise;
+			isPreload === RESOLVE_DEPENDENCIES ? waitForDependencyResolution(loadPromise) : loadPromise;
 		}
 		if (isEntry) {
 			module.info.isEntry = true;
@@ -564,7 +566,7 @@ export class ModuleLoader {
 			}
 			module.implicitlyLoadedAfter.clear();
 		}
-		return this.fetchModuleDependencies(module, ...(await loadPromise));
+		this.fetchModuleDependencies(module, ...(await loadPromise));
 	}
 
 	private handleResolveId(