delay import object creating until all promises has been initialized

Author: sokra

lib/wasm/WasmMainTemplatePlugin.js

@@ -102,7 +102,7 @@ function generateImportObject(module) {
 		return Template.asString([
 			`${JSON.stringify(module.id)}: function() {`,
 			Template.indent([
-				`return Promise.all([${promises}]).then(function(array) {`,
+				`return Promise.resolve().then(function() { return Promise.all([${promises}]); }).then(function(array) {`,
 				Template.indent([
 					variables,
 					"return {",