The next step in the refactoring of editorjs-undo is to create the core functions for the HistoryManager class, this time we need to implement the add method that allows to retrieve the last deleted state and insert it in the index of the corresponding block.
According to the editorjs limitations, the insertion in the zero index will be handled by the move function and not directly by insert of the editorjs block API.
Objective
[ ] Implement the add core function in the HistoryManager class.
Context
The next step in the refactoring of editorjs-undo is to create the core functions for the
HistoryManagerclass, this time we need to implement theaddmethod that allows to retrieve the last deleted state and insert it in the index of the corresponding block.According to the editorjs limitations, the insertion in the zero index will be handled by the
movefunction and not directly byinsertof the editorjs block API.Objective
addcore function in theHistoryManagerclass.