Describe the bug
On Development extension code when it is loaded and used without choosing or switching any language it takes default language as undefined instead of "C".

To Reproduce
Steps to reproduce the behavior:

1. Clone the code
2. Build the package.
3. Load the extension on Browser.
4. now translate any code. you will see default language as undefined

Expected behavior
Instead of undefined it should have taken 1st language i.e. "C".

Desktop (please complete the following information):

• chrome