diff --git a/js/bundle.go b/js/bundle.go
index 187e3ca1bf7..1b8328bd5ce 100644
--- a/js/bundle.go
+++ b/js/bundle.go
@@ -71,7 +71,8 @@ func collectEnv() map[string]string {
 // Creates a new bundle from a source file and a filesystem.
 func NewBundle(src *lib.SourceData, fs afero.Fs) (*Bundle, error) {
 	// Compile sources, both ES5 and ES6 are supported.
-	pgm, code, err := compiler.Compile(string(src.Data), src.Filename, "", "", true)
+	code := string(src.Data)
+	pgm, _, err := compiler.Compile(code, src.Filename, "", "", true)
 	if err != nil {
 		return nil, err
 	}
@@ -135,7 +136,7 @@ func NewBundleFromArchive(arc *lib.Archive) (*Bundle, error) {
 		return nil, errors.Errorf("expected bundle type 'js', got '%s'", arc.Type)
 	}
 
-	pgm, err := goja.Compile(arc.Filename, string(arc.Data), true)
+	pgm, _, err := compiler.Compile(string(arc.Data), arc.Filename, "", "", true)
 	if err != nil {
 		return nil, err
 	}
@@ -143,11 +144,11 @@ func NewBundleFromArchive(arc *lib.Archive) (*Bundle, error) {
 	initctx := NewInitContext(goja.New(), new(context.Context), nil, arc.Pwd)
 	for filename, data := range arc.Scripts {
 		src := string(data)
-		scr, err := goja.Compile(filename, src, true)
+		pgm, err := initctx.compileImport(src, filename)
 		if err != nil {
 			return nil, err
 		}
-		initctx.programs[filename] = programWithSource{scr, src}
+		initctx.programs[filename] = programWithSource{pgm, src}
 	}
 	initctx.files = arc.Files
 
diff --git a/js/bundle_test.go b/js/bundle_test.go
index 7998a0cfddd..5e1b9d99812 100644
--- a/js/bundle_test.go
+++ b/js/bundle_test.go
@@ -430,7 +430,7 @@ func TestNewBundleFromArchive(t *testing.T) {
 	assert.NoError(t, afero.WriteFile(fs, "/path/to/file.txt", []byte(`hi`), 0644))
 	assert.NoError(t, afero.WriteFile(fs, "/path/to/exclaim.js", []byte(`export default function(s) { return s + "!" };`), 0644))
 
-	b, err := NewBundle(&lib.SourceData{
+	src := &lib.SourceData{
 		Filename: "/path/to/script.js",
 		Data: []byte(`
 			import exclaim from "./exclaim.js";
@@ -438,7 +438,8 @@ func TestNewBundleFromArchive(t *testing.T) {
 			export let file = open("./file.txt");
 			export default function() { return exclaim(file); };
 		`),
-	}, fs)
+	}
+	b, err := NewBundle(src, fs)
 	if !assert.NoError(t, err) {
 		return
 	}
@@ -458,10 +459,10 @@ func TestNewBundleFromArchive(t *testing.T) {
 	assert.Equal(t, "js", arc.Type)
 	assert.Equal(t, lib.Options{VUs: null.IntFrom(12345)}, arc.Options)
 	assert.Equal(t, "/path/to/script.js", arc.Filename)
-	assert.Equal(t, "\"use strict\";Object.defineProperty(exports, \"__esModule\", { value: true });exports.file = exports.options = undefined;exports.default =\n\n\n\nfunction () {return (0, _exclaim2.default)(file);};var _exclaim = require(\"./exclaim.js\");var _exclaim2 = _interopRequireDefault(_exclaim);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { default: obj };}var options = exports.options = { vus: 12345 };var file = exports.file = open(\"./file.txt\");;", string(arc.Data))
+	assert.Equal(t, string(src.Data), string(arc.Data))
 	assert.Equal(t, "/path/to", arc.Pwd)
 	assert.Len(t, arc.Scripts, 1)
-	assert.Equal(t, "(function(){\"use strict\";Object.defineProperty(exports, \"__esModule\", { value: true });exports.default = function (s) {return s + \"!\";};;})()", string(arc.Scripts["/path/to/exclaim.js"]))
+	assert.Equal(t, `export default function(s) { return s + "!" };`, string(arc.Scripts["/path/to/exclaim.js"]))
 	assert.Len(t, arc.Files, 1)
 	assert.Equal(t, `hi`, string(arc.Files["/path/to/file.txt"]))
 
diff --git a/js/initcontext.go b/js/initcontext.go
index 1488962bed9..2d0e59c8272 100644
--- a/js/initcontext.go
+++ b/js/initcontext.go
@@ -136,7 +136,8 @@ func (i *InitContext) requireFile(name string) (goja.Value, error) {
 		}
 
 		// Compile the sources; this handles ES5 vs ES6 automatically.
-		pgm_, src, err := compiler.Compile(string(data.Data), data.Filename, "(function(){", "})()", true)
+		src := string(data.Data)
+		pgm_, err := i.compileImport(src, data.Filename)
 		if err != nil {
 			return goja.Undefined(), err
 		}
@@ -154,6 +155,11 @@ func (i *InitContext) requireFile(name string) (goja.Value, error) {
 	return module.Get("exports"), nil
 }
 
+func (i *InitContext) compileImport(src, filename string) (*goja.Program, error) {
+	pgm, _, err := compiler.Compile(src, filename, "(function(){", "})()", true)
+	return pgm, err
+}
+
 func (i *InitContext) Open(name string) (string, error) {
 	filename := loader.Resolve(i.pwd, name)
 	data, ok := i.files[filename]