Java2TypeScript (j2ts) tool
Assume after create B4A, so we get *. apk and bring java file converted *. ts file , and the last, we convert ts to be*. hap file again.
P.S. I've just know the Flutters supports Harmony OS by using HarmonySDK already.
B4X:
```bash
npm install -g java-to-typescript
j2ts --input ./src --output ./ts-outputAssume after create B4A, so we get *. apk and bring java file converted *. ts file , and the last, we convert ts to be*. hap file again.
P.S. I've just know the Flutters supports Harmony OS by using HarmonySDK already.