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refactor: make intersect perform a true intersection (#7211)

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Co-authored-by: Antonio Román <kyradiscord@gmail.com>
This commit is contained in:
Suneet Tipirneni
2022-01-11 06:29:41 -05:00
committed by GitHub
parent 9052e321d1
commit d8efba24e0
1 changed files with 4 additions and 2 deletions
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6
packages/collection/src/index.ts
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@@ -625,14 +625,16 @@ export class Collection<K, V> extends Map<K, V> {
} }
/** /**
* The intersect method returns a new structure containing items where the keys are present in both original structures. * The intersect method returns a new structure containing items where the keys and values are present in both original structures.
* *
* @param other The other Collection to filter against * @param other The other Collection to filter against
*/ */
public intersect<T>(other: Collection<K, T>): Collection<K, T> { public intersect<T>(other: Collection<K, T>): Collection<K, T> {
const coll = new this.constructor[Symbol.species]<K, T>(); const coll = new this.constructor[Symbol.species]<K, T>();
for (const [k, v] of other) { for (const [k, v] of other) {
if (this.has(k)) coll.set(k, v); if (this.has(k) && Object.is(v, this.get(k))) {
coll.set(k, v);
}
} }
return coll; return coll;
} }