npm : https://www.npmjs.com/package/leaflet-craft

Extends https://github.com/Wildhoney/Leaflet.FreeDraw made by WildHoney and adds following functionalities to it:

1. Adds Undo-Redo feature to Polygons.

2. Adds Delete 1 marker feature by right clicking it.

3. Adds Delete multiple markers by drawing circle around them :)

4. Adds Control Bar to easily change MODES - Create, Edit, Delete Polygon, Delete 1 Marker, Delete multiple Markers.

5. Calculates AREA (in metre square) of polygon which changes dynamically on editing the polygon. Stored with key polygonArea in each polygon's leaflet object.

export const polygonArea = Symbol('freedraw/polygonArea') We use TURF Area function to calculate the area.

6. Add Hooks:

We can subscribe to following Event listeners and can pass a callback function to be executed. Callback function can be asynchronous as well, also the return value should be TRUE to continue the event (create/edit/delete) else if your callback function returns False then that event is forfeited. This is implemented by ES6 promise.

• Polygon created: Started
• Polygon created: Ended
• Polygon edit: Started
• Polygon edit: Ended
• Polygon delete: Started
• Polygon delete: Ended

Work in PROGRESS:

1. Conversion to Typescript.
2. Adding functionality to create Polygon via clicking (similar to Leaflet.Draw).
3. Extending React-Leaflet to support React apps.

Thank you @wildhoney, @ankeetmaini and other contributors ❤️ . This library is actively maintained by @sagarpreet-chadha .