Javascript errors with leaflet 1.1.0

• I’m reporting a bug, not asking for help
• I’ve looked at the documentation to make sure the behaviour is documented and expected
• I’m sure this is a Leaflet Draw code issue, not an issue with my own code nor with the framework I’m using (Cordova, Ionic, Angular, React…)
• I’ve searched through the issues to make sure it’s not yet reported

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How to reproduce

• Leaflet version I’m using: 1.1.0
• Leaflet Draw version I’m using: 0.4.9

What behaviour I’m expecting and which behaviour I’m seeing

I expect the javascript to load without throwing errors but it reports:

TypeError: can't define property "segmentsIntersect": Object is not extensible

Minimal example reproducing the issue

Load https://jsfiddle.net/1fuq748y/1/ while watching the console.

[JonForest]

For a workaround on the “segmentsIntersect” bug you can pin the Leaflet version in your own package.json at “1.0.3”. This will satisfy the semver requirements of the Leaflet-draw package.json and work. Not sure what changed in the Leaflet package between 1.0.3 and 1.1.0. Might go have a quick look and see, but from a quick glance earlier, it seems the answer was ‘a lot’.

[ddproxy]

Lots of good information here. It does appear the minor release of Leaflet broke Draw.

Any patches to resolve the utility issue should reference #5589 (thanks @frehner for pointing that out).

ES6 Rollup would be nice, we can set up an ES6 branch to handle that. Leaflet.Editable is having a similar issue (looks like utility) and the next ‘major’ update to Leaflet.Draw will be piggybacking off Editable - just an FYI.

In the meantime, I’ll scope the compatibility of Leaflet.Draw to a ceiling of Leaflet 1.0.x. This will happen tomorrow morning.