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Merge eaf527235a into 9f98d803c0

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Muthukumar M 2025-10-06 11:28:31 +05:30 committed by GitHub
parent 9f98d803c0 eaf527235a
commit 8fbce14d5b
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1 changed files with 13 additions and 3 deletions
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16
lib/util/Queue.js
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@ -18,6 +18,11 @@ class Queue {
* @type {Set<T>}
*/
this._set = new Set(items);
/**
* @private
* @type {Iterator<T>}
*/
this._iterator = this._set[Symbol.iterator]();
}
/**
@ -39,11 +44,16 @@ class Queue {
/**
* Retrieves and removes the head of this queue.
* @returns {T | undefined} The head of the queue of `undefined` if this queue is empty.
* @returns {T | undefined} The head of the queue or `undefined` if this queue is empty.
*/
dequeue() {
const result = this._set[Symbol.iterator]().next();
if (result.done) return;
let result = this._iterator.next();
const isInvalidIterator = result.done && this._set.size > 0;
if (isInvalidIterator) {
this._iterator = this._set[Symbol.iterator]();
result = this._iterator.next();
}
if (result.done) return undefined;
this._set.delete(result.value);
return result.value;
}