rc-js-util
Version:
A collection of TS and C++ utilities to help writing performant and correct applications, achieved through strict typing and (removable) invariant checking.
16 lines • 321 B
JavaScript
/**
* @public
* Gets the first inserted key in a `Map`.
*
* @returns The first key in `map`, otherwise `undefined` where size 0.
*
* @remarks
* See {@link mapFirstKey}.
*/
export function mapFirstKey(map) {
return map
.keys()
.next()
.value;
}
//# sourceMappingURL=map-first-key.js.map