nl_tokens: Calculate which data - points exist in oldData and not nextData - these are the exiting data - points . Also calculate which data - points exist in nextData and not oldData - these are the entering data - points .
pl_tokens: function getNodeTransitions ( oldData , nextData ) { const oldDataKeyed = oldData && getKeyedData ( oldData ) ; const nextDataKeyed = nextData && getKeyedData ( nextData ) ; <mask> { entering : oldDataKeyed && getKeyedDataDifference ( nextDataKeyed , oldDataKeyed ) , exiting : nextDataKeyed && getKeyedDataDifference ( oldDataKeyed , nextDataKeyed ) } ; }