expandToNode(key): The getter 'key' was called on null.

[Federica Li Muti]

If the parent of the node is null the function fires with the error “The getter 'key' was called on null.“

[Kevin Armstrong]

Fixes issue #23. Refactored logic to prevent getter 'key' called on null error when calling expandToNode and collapseToNode functions.

→ <<cset 605edcb90afd>>

[Kevin Armstrong]

Hi Frederica. Seems this issue has been there for a while and just overlooked because it assumed the correct key would be passed. The code has been refactored and the package has been updated. Thanks for pointing out this issue.