Prototyping a website builder?

Question

JavaScript

Hi guys!
Let me know who has come across.
The task is to create a small prototype site builder (like Tilda) in JavaScript.
By function: add a picture, edit text, create a header, etc.
Who did something like that? Take a look at a couple of examples with code to build something of your own.
The task is purely for practicing JavaScript skills. there is no need to write the second tilde.

Answer 1

https://github.com/prisma-cms

Answer 2

gutenberg-js https://github.com/front/gutenberg-js