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feat(collection): honour subclassing via @@species in static methods (#10723)

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* feat(collection): use @@species in static methods

* test(collection): subclassing tests

* chore: trigger ci

---------

Co-authored-by: almeidx <github@almeidx.dev>
This commit is contained in:
René
2025-01-26 13:14:48 +00:00
committed by GitHub
parent 0ab6abbcff
commit b7e0fe3689
2 changed files with 63 additions and 3 deletions
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11
packages/collection/src/collection.ts
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@@ -11,11 +11,11 @@ export type ReadonlyCollection<Key, Value> = Omit<
export interface Collection<Key, Value> {
/**
* Ambient declaration to allow `this.constructor[@@species]` in class methods.
* Ambient declaration to allow references to `this.constructor` in class methods.
*
* @internal
*/
constructor: typeof Collection & { readonly [Symbol.species]: typeof Collection };
constructor: typeof Collection;
}
/**
@@ -1076,7 +1076,7 @@ export class Collection<Key, Value> extends Map<Key, Value> {
entries: Iterable<[Key, Value]>,
combine: (firstValue: Value, secondValue: Value, key: Key) => Value,
): Collection<Key, Value> {
const coll = new Collection<Key, Value>();
const coll = new this[Symbol.species]<Key, Value>();
for (const [key, value] of entries) {
if (coll.has(key)) {
coll.set(key, combine(coll.get(key)!, value, key));
@@ -1087,6 +1087,11 @@ export class Collection<Key, Value> extends Map<Key, Value> {
return coll;
}
/**
* @internal
*/
declare public static readonly [Symbol.species]: typeof Collection;
}
/**