hybrid push based reactivity ➡️
Modern signals implementations in JavaScript are all implemented using push-pull-push and tri-coloring. However, this approach requires overeager marking of all recursive dependencies, making it impossible to make an O(1) implementation of createSelector or createProjection (which require marking only a subset of children based on the return value of a computation).
This library implements a different approach to reactivity using topological execution (height ordering).
To allow for nodes to dynamically change sources (and therefore heights), we fallback to the push-pull-push algorithm.