diff --git a/.gitignore b/.gitignore
index cbd617b..72cb5d9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,12 @@ examples/*.so
 microbench*.txt
 qjs
 qjsc
+qjscalc
+qjscalc.c
+hello.c
+hello
+hello_module
+repl.c
 run-test262
 test262
 test262_*.txt
diff --git a/qjs.c b/qjs.c
index 3c29c67..14cbf4d 100644
--- a/qjs.c
+++ b/qjs.c
@@ -494,11 +494,12 @@ int main(int argc, char **argv)
                 "globalThis.os = os;\n";
             eval_buf(ctx, str, strlen(str), "<input>", JS_EVAL_TYPE_MODULE);
         }
+
         //POLYFILLS BEGIN 
-        const char *reqPF = "function require(x) { \n"
-	                        "   import { y } from `String(x)` \n"
-	                        "   return y \n"
-                            "}";
+        const char *reqPF = "async function require(x) { {\n"
+                    "    const y = await import(x);" // use dynamic import.
+                    "    return y;\n"
+                    "}\n";
         eval_buf(ctx, reqPF, strlen(reqPF), "<input>", JS_EVAL_TYPE_MODULE);
 
         for(i = 0; i < include_count; i++) {