diff --git a/declarations.d.ts b/declarations.d.ts
index 81a0b7c0f..bd50da6c9 100644
--- a/declarations.d.ts
+++ b/declarations.d.ts
@@ -7,7 +7,6 @@ declare namespace NodeJS {
 	}
 }
 
-
 declare module "neo-async" {
 	export interface Dictionary<T> {
 		[key: string]: T;
diff --git a/lib/DelegatedModuleFactoryPlugin.js b/lib/DelegatedModuleFactoryPlugin.js
index 26db0066f..a0a05a438 100644
--- a/lib/DelegatedModuleFactoryPlugin.js
+++ b/lib/DelegatedModuleFactoryPlugin.js
@@ -15,7 +15,13 @@ class DelegatedModuleFactoryPlugin {
 	constructor(options) {
 		this.options = options;
 		options.type = options.type || "require";
-		options.extensions = options.extensions || ["", ".js"];
+		options.extensions = options.extensions || [
+			"",
+			".wasm",
+			".mjs",
+			".js",
+			".json"
+		];
 	}
 
 	apply(normalModuleFactory) {