diff --git a/languageserver/cmd/languageserver/main_wasm.go b/languageserver/cmd/languageserver/main_wasm.go
index 4d468586..7d22a7fb 100644
--- a/languageserver/cmd/languageserver/main_wasm.go
+++ b/languageserver/cmd/languageserver/main_wasm.go
@@ -160,13 +160,31 @@ func start(id int) {
 	)
 
 	addressImportResolver := func(location common.AddressLocation) (code string, err error) {
-		res := global.Call(globalFunctionName(id, "getAddressCode"), location.String())
+		getAddressCodeFunc := global.Get(globalFunctionName(id, "getAddressCode"))
+		if getAddressCodeFunc.IsNull() || getAddressCodeFunc.IsUndefined() {
+			return "", fmt.Errorf("CLS %d: getAddressCode not defined", id)
+		}
+
+		res := getAddressCodeFunc.Invoke(location.Address().String())
 		if res.IsNull() || res.IsUndefined() {
 			return "", fmt.Errorf("CLS %d: getAddressCode failed: %s", id, res)
 		}
 		return res.String(), nil
 	}
 
+	stringImportResolver := func(location common.StringLocation) (code string, err error) {
+		getStringCodeFunc = global.Get(globalFunctionName(id, "getStringCode"))
+		if getStringCodeFunc.IsNull() || getStringCodeFunc.IsUndefined() {
+			return "", fmt.Errorf("CLS %d: getStringCode not defined", id)
+		}
+
+		res := getStringCodeFunc.Invoke(location.String())
+		if res.IsNull() || res.IsUndefined() {
+			return "", fmt.Errorf("CLS %d: getStringCode failed: %s", id, res)
+		}
+		return res.String(), nil
+	}
+
 	languageServer, err := server.NewServer()
 	if err != nil {
 		panic(err)
@@ -174,6 +192,7 @@ func start(id int) {
 
 	err = languageServer.SetOptions(
 		server.WithAddressImportResolver(addressImportResolver),
+		server.WithStringImportResolver(stringImportResolver),
 	)
 	if err != nil {
 		panic(err)