@Muhammad-Saqib I wasn't suggesting that you specifically implement it, just that you should wait until someone does. If you can implement it, then please do!
How i can import JSON database into NodeBB
Hi, i just convert my database in JSON files, how i can import it on my NodeBB installation.
You'll want to build an exporter that will work with nodebb-plugin-import: https://github.com/akhoury/nodebb-plugin-import/blob/master/write-my-own-exporter.md