Leaflet.Editable | Make geometries editable in Leaflet

in Leaflet.Editable I need to draw several polygons, be able to edit them and at the end save them as GeoJSON or delete them all together by external button. I can do it with one polygon:

I am working on developing a set of definitions for DefinitelyTyped, for the package Leaflet.Editable. Leaflet is notable in that it uses a partially custom class implementation to allow for extending of existing types in pure JavaScript, as seen here. Simply calling import 'Leaflet.Editable' anywhere in your code will add new functionality to the existing Leaflet classes, such as the ability to enable and disable editing of certain layers.

It is not implemented in TypeScript, and as such typing is implemented in @types/leaflet, so the package I am developing (@types/leaflet-editable) has to import the leaflet namespace and extend the existing types.

I must extend the existing types rather than adding new ones because there are other libraries (such as react-leaflet) that use those types.

For example, by extending the MapOptions type (by merging the interfaces), I was able to add new properties to react-leaflet's MapComponent component, since its props extend Leaflet.MapOptions. If I were to create a new type, EditableMapOptions, it would not be extended by react-leaflet and thus I would not be able to add those properties to MapComponent.

I was able to extend several existing interfaces, and add new ones such as VertexEventHandlerFn (which represents an event callback that provides a VertexEvent).

The issue is how @types/leaflet implements the map.on('click', (event: LeafletEvent) => {}) function. Here's a snippet from the DefinitelyTyped repo:

As seen in the image below, I’d like to remove the option to cancel a drawing. Here’s my code: https://jsfiddle.net/wne2hjo0/