diff --git a/ts/tsbuild.classes.compiler.ts b/ts/tsbuild.classes.compiler.ts
index 0477774..9aed1c9 100644
--- a/ts/tsbuild.classes.compiler.ts
+++ b/ts/tsbuild.classes.compiler.ts
@@ -16,6 +16,7 @@ export const compilerOptionsDefault: CompilerOptions = {
   module: plugins.typescript.ModuleKind.CommonJS,
   lib: ['lib.es2017.d.ts'],
   noImplicitAny: false,
+  esModuleInterop: true,
   target: plugins.typescript.ScriptTarget.ES2017
 };