@@ -0,0 +1,439 @@
+package com.chemenghelper;%0A%0Aimport com.facebook.react.bridge.ReactApplicationContext;%0Aimport com.facebook.react.bridge.ReactContextBaseJavaModule;%0A%0A/**%0A * Created by root on 9/25/17.%0A */%0A%0Apublic class UnitConversion extends ReactContextBaseJavaModule %7B%0A%0A    public UnitConversion(ReactApplicationContext reactContext)%7B%0A        super(reactContext);%0A    %7D%0A%0A    @Override%0A    public String getName()%7B%0A        return %22UnitConversion%22;%0A    %7D%0A%0A%7D

add native module