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types: union value types on intersect and difference #56

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types: union value types on intersect and difference #56

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34c4a79
types: union types on `intersect` and `difference` when value types a…
suneettipirneni Jan 2, 2022
a0de811
types: remove utility type and overloads
suneettipirneni Jan 2, 2022
962d6ef
fix: intersect shouldn't merge value types
suneettipirneni Jan 3, 2022
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8 changes: 4 additions & 4 deletions src/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -629,8 +629,8 @@ export class Collection<K, V> extends Map<K, V> {
*
* @param other The other Collection to filter against
*/
public intersect(other: Collection<K, V>) {
const coll = new this.constructor[Symbol.species]<K, V>();
public intersect<T>(other: Collection<K, T>): Collection<K, T> {
const coll = new this.constructor[Symbol.species]<K, T>();
for (const [k, v] of other) {
if (this.has(k)) coll.set(k, v);
}
Expand All @@ -642,8 +642,8 @@ export class Collection<K, V> extends Map<K, V> {
*
* @param other The other Collection to filter against
*/
public difference(other: Collection<K, V>) {
const coll = new this.constructor[Symbol.species]<K, V>();
public difference<T>(other: Collection<K, T>): Collection<K, V | T> {
const coll = new this.constructor[Symbol.species]<K, V | T>();
for (const [k, v] of other) {
if (!this.has(k)) coll.set(k, v);
}
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