Set Helpers
Utility functions for working with set operations.
Functions
Section titled “Functions”| Function | Description |
|---|---|
countBy |
Groups the values of a Set by a derived key and counts how many fall into each group. |
difference |
native JS Set.prototype.difference() (ES2025 (Set methods)) |
filter |
Creates a new Set containing only the values for which the predicate returns true. |
forEach |
native JS Set.prototype.forEach((value, value2, set) => ...) (ES2015) |
groupBy |
native JS Map.groupBy(set.values(), fn) (ES2024) |
intersection |
native JS Set.prototype.intersection() (ES2025 (Set methods)) |
map |
Creates a new Set with each value transformed by a function. |
map / filter |
native JS new Set(set.values().map(fn)) / new Set(set.values().filter(fn)) (ES2025 (Iterator Helpers)) |
reduce / some / every / find |
native JS set.values().reduce(fn, init) / .some(fn) / .every(fn) / .find(fn) (ES2025 (Iterator Helpers)) |
symmetricDifference |
native JS Set.prototype.symmetricDifference() (ES2025 (Set methods)) |
toMapByKey |
Builds a Map from a Set, keyed by a derived key. |
union |
native JS Set.prototype.union() (ES2025 (Set methods)) |