doesn't works with Leaflet 0.7.7

[Hippipers]

With Leaflet 0.7.7, console returns "leaflet.scalefactor.min.js:5 Uncaught TypeError: e.distance is not a function"

[Hippipers]

Ok, I've replaced

var RealWorlMetersPer100Pixels = map.distance(
map.containerPointToLatLng([0, CenterOfMap]),
map.containerPointToLatLng([100, CenterOfMap])
);
by

var RealWorlMetersPer100Pixels = (
map.containerPointToLatLng([0, CenterOfMap]).distanceTo(
map.containerPointToLatLng([100, CenterOfMap]))
);

And now it works