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.
21 lines (19 loc) • 469 B
text/typescript
/**
* @public
* Returns a map with keys from both A and B. If both A and B have the same key the value from B will be used.
*
* @remarks
* See {@link mapUnion}.
*/
export function mapUnion<TKey, TIem>
(
a: ReadonlyMap<TKey, TIem>,
b: ReadonlyMap<TKey, TIem>,
)
: Map<TKey, TIem>
{
const result = new Map<TKey, TIem>();
a.forEach((item, key) => result.set(key, item));
b.forEach((item, key) => result.set(key, item));
return result;
}