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76 lines
1.9 KiB
TypeScript
76 lines
1.9 KiB
TypeScript
export default class Queue<ValueType> implements Iterable<ValueType> {
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/**
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The size of the queue.
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*/
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readonly size: number;
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/**
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Tiny queue data structure.
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The instance is an [`Iterable`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols), which means you can iterate over the queue front to back with a “for…of” loop, or use spreading to convert the queue to an array. Don't do this unless you really need to though, since it's slow.
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@example
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```
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import Queue from 'yocto-queue';
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const queue = new Queue();
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queue.enqueue('🦄');
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queue.enqueue('🌈');
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console.log(queue.size);
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//=> 2
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console.log(...queue);
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//=> '🦄 🌈'
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console.log(queue.dequeue());
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//=> '🦄'
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console.log(queue.dequeue());
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//=> '🌈'
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```
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*/
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constructor();
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/**
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The instance is an [`Iterable`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols), which means you can iterate over the queue front to back with a “for…of” loop. Using the iterator will not remove the items from the queue. If you want that, use `drain()` instead.
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You can also use spreading to convert the queue to an array. Don't do this unless you really need to though, since it's slow.
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*/
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[Symbol.iterator](): IterableIterator<ValueType>;
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/**
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Returns an iterator that dequeues items as you consume it.
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This allows you to empty the queue while processing its items.
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If you want to not remove items as you consume it, use the `Queue` object as an iterator.
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*/
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drain(): IterableIterator<ValueType>;
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/**
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Add a value to the queue.
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*/
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enqueue(value: ValueType): void;
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/**
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Remove the next value in the queue.
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@returns The removed value or `undefined` if the queue is empty.
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*/
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dequeue(): ValueType | undefined;
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/**
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Get the next value in the queue without removing it.
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@returns The value or `undefined` if the queue is empty.
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*/
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peek(): ValueType | undefined;
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/**
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Clear the queue.
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*/
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clear(): void;
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}
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