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Add alternate implementation of forEach #8

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Dec 18, 2021
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Add alternate implementation of forEach #8

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2 changes: 1 addition & 1 deletion arrayStringMap.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -250,7 +250,6 @@ describe("Map with two objects", () => {
it("Map forEach is called twice", () => {
let count = 0;
arrayStringMap.forEach((value, key, map) => {
count++;
assert(map === arrayStringMap, "Map is arrayStringMap");
if (count === 0){
assert(key === sampleArray1, "Key is sampleArray1");
Expand All @@ -260,6 +259,7 @@ describe("Map with two objects", () => {
assert(key === sampleArray3, "Key is sampleArray3");
assert(value === sampleValue2, "Value is sampleValue2");
}
count++;
});
assert(count === 2, "ForEach is called twice");
})
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8 changes: 3 additions & 5 deletions arrayStringMap.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -51,11 +51,9 @@ export default class ArrayStringMap<K extends any[], V> implements Map<K, V> {
}

forEach(callbackfn: (value: V, key: K, map: ArrayStringMap<K, V>) => void, thisArg?: any): void {
this._converterInfo.forEach((value, key) => {
// TypeScript complains that this will be undefined, but the items in
// `this._converterInfo` and `this._map` will always be defined in each other.
return callbackfn(this._map.get(key)!, value, thisArg);
});
for (const [key, value] of this.entries()) {
callbackfn.call(thisArg, value, key, this);
}
}

get(key: K): V | undefined {
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