How do you add built-in library block to app inventor 2?

[Devarsh_Mavani]

I checked the documentation at How to Add a Built-In Library Block
but it is written that documentation is only for App Inventor Classic and not for Ai2. Is there any such document for AI2?

[Aarush_Kumar]

Some of the things still match -

and -

[preetvadaliya]

@Devarsh_Mavani, It is quite a big answer and it also depends upon what exactly you want to implement, but here are some common steps to add built-in blocks...

1. Create block definitions using blockly dev tools then add them into the blocks/ folder as @Aarush_Kumar mentation in his post.
2. Creat a code generator for your blocks and add it to the generator/yail/ folder.
3. Add file path into ploverConfig.js.
4. We need to add an entry for the new blocks category in the block selector panel in the appengine/ folder.
5. We need to write Kawa Schemes for the new blocks and add them into the buildserver/ folder.

Actually currently we do not have any written documentation for adding built-in blocks in App Inventor so I gave you a brief idea if you have more questions then feel free to ask, I will try to solve your question.