77 lines
2.3 KiB
JavaScript
77 lines
2.3 KiB
JavaScript
|
(function (global, factory) {
|
||
|
|
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
|
||
|
|
typeof define === 'function' && define.amd ? define(['exports'], factory) :
|
||
|
|
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.SapphireAsyncQueue = {}));
|
||
|
|
})(this, (function (exports) { 'use strict';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The AsyncQueue class used to sequentialize burst requests
|
||
|
|
*/
|
||
|
|
class AsyncQueue {
|
||
|
|
constructor() {
|
||
|
|
/**
|
||
|
|
* The promises array
|
||
|
|
*/
|
||
|
|
Object.defineProperty(this, "promises", {
|
||
|
|
enumerable: true,
|
||
|
|
configurable: true,
|
||
|
|
writable: true,
|
||
|
|
value: []
|
||
|
|
});
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* The remaining amount of queued promises
|
||
|
|
*/
|
||
|
|
get remaining() {
|
||
|
|
return this.promises.length;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* Waits for last promise and queues a new one
|
||
|
|
* @example
|
||
|
|
* ```typescript
|
||
|
|
* const queue = new AsyncQueue();
|
||
|
|
* async function request(url, options) {
|
||
|
|
* await queue.wait();
|
||
|
|
* try {
|
||
|
|
* const result = await fetch(url, options);
|
||
|
|
* // Do some operations with 'result'
|
||
|
|
* } finally {
|
||
|
|
* // Remove first entry from the queue and resolve for the next entry
|
||
|
|
* queue.shift();
|
||
|
|
* }
|
||
|
|
* }
|
||
|
|
*
|
||
|
|
* request(someUrl1, someOptions1); // Will call fetch() immediately
|
||
|
|
* request(someUrl2, someOptions2); // Will call fetch() after the first finished
|
||
|
|
* request(someUrl3, someOptions3); // Will call fetch() after the second finished
|
||
|
|
* ```
|
||
|
|
*/
|
||
|
|
wait() {
|
||
|
|
const next = this.promises.length ? this.promises[this.promises.length - 1].promise : Promise.resolve();
|
||
|
|
let resolve;
|
||
|
|
const promise = new Promise((res) => {
|
||
|
|
resolve = res;
|
||
|
|
});
|
||
|
|
this.promises.push({
|
||
|
|
resolve: resolve,
|
||
|
|
promise
|
||
|
|
});
|
||
|
|
return next;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* Frees the queue's lock for the next item to process
|
||
|
|
*/
|
||
|
|
shift() {
|
||
|
|
const deferred = this.promises.shift();
|
||
|
|
if (typeof deferred !== 'undefined')
|
||
|
|
deferred.resolve();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
exports.AsyncQueue = AsyncQueue;
|
||
|
|
|
||
|
|
Object.defineProperty(exports, '__esModule', { value: true });
|
||
|
|
|
||
|
|
}));
|
||
|
|
//# sourceMappingURL=index.umd.js.map
|