import “../selection/filter”; import “transition”;
d3_transitionPrototype.filter = function(filter) {
var subgroups = [], subgroup, group, node; if (typeof filter !== "function") filter = d3_selection_filter(filter); for (var j = 0, m = this.length; j < m; j++) { subgroups.push(subgroup = []); for (var group = this[j], i = 0, n = group.length; i < n; i++) { if ((node = group[i]) && filter.call(node, node.__data__, i)) { subgroup.push(node); } } } return d3_transition(subgroups, this.id, this.time).ease(this.ease());
};