this["wp"] = this["wp"] || {}; this["wp"]["priorityQueue"] = /******/ (function(modules) { // webpackBootstrap /******/ // The module cache /******/ var installedModules = {}; /******/ /******/ // The require function /******/ function __webpack_require__(moduleId) { /******/ /******/ // Check if module is in cache /******/ if(installedModules[moduleId]) { /******/ return installedModules[moduleId].exports; /******/ } /******/ // Create a new module (and put it into the cache) /******/ var module = installedModules[moduleId] = { /******/ i: moduleId, /******/ l: false, /******/ exports: {} /******/ }; /******/ /******/ // Execute the module function /******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__); /******/ /******/ // Flag the module as loaded /******/ module.l = true; /******/ /******/ // Return the exports of the module /******/ return module.exports; /******/ } /******/ /******/ /******/ // expose the modules object (__webpack_modules__) /******/ __webpack_require__.m = modules; /******/ /******/ // expose the module cache /******/ __webpack_require__.c = installedModules; /******/ /******/ // define getter function for harmony exports /******/ __webpack_require__.d = function(exports, name, getter) { /******/ if(!__webpack_require__.o(exports, name)) { /******/ Object.defineProperty(exports, name, { enumerable: true, get: getter }); /******/ } /******/ }; /******/ /******/ // define __esModule on exports /******/ __webpack_require__.r = function(exports) { /******/ if(typeof Symbol !== 'undefined' && Symbol.toStringTag) { /******/ Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' }); /******/ } /******/ Object.defineProperty(exports, '__esModule', { value: true }); /******/ }; /******/ /******/ // create a fake namespace object /******/ // mode & 1: value is a module id, require it /******/ // mode & 2: merge all properties of value into the ns /******/ // mode & 4: return value when already ns object /******/ // mode & 8|1: behave like require /******/ __webpack_require__.t = function(value, mode) { /******/ if(mode & 1) value = __webpack_require__(value); /******/ if(mode & 8) return value; /******/ if((mode & 4) && typeof value === 'object' && value && value.__esModule) return value; /******/ var ns = Object.create(null); /******/ __webpack_require__.r(ns); /******/ Object.defineProperty(ns, 'default', { enumerable: true, value: value }); /******/ if(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key)); /******/ return ns; /******/ }; /******/ /******/ // getDefaultExport function for compatibility with non-harmony modules /******/ __webpack_require__.n = function(module) { /******/ var getter = module && module.__esModule ? /******/ function getDefault() { return module['default']; } : /******/ function getModuleExports() { return module; }; /******/ __webpack_require__.d(getter, 'a', getter); /******/ return getter; /******/ }; /******/ /******/ // Object.prototype.hasOwnProperty.call /******/ __webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); }; /******/ /******/ // __webpack_public_path__ /******/ __webpack_require__.p = ""; /******/ /******/ /******/ // Load entry module and return exports /******/ return __webpack_require__(__webpack_require__.s = 351); /******/ }) /************************************************************************/ /******/ ({ /***/ 351: /***/ (function(module, __webpack_exports__, __webpack_require__) { "use strict"; __webpack_require__.r(__webpack_exports__); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "createQueue", function() { return createQueue; }); /** * Enqueued callback to invoke once idle time permits. * * @typedef {()=>void} WPPriorityQueueCallback */ /** * An object used to associate callbacks in a particular context grouping. * * @typedef {{}} WPPriorityQueueContext */ /** * Function to add callback to priority queue. * * @typedef {(element:WPPriorityQueueContext,item:WPPriorityQueueCallback)=>void} WPPriorityQueueAdd */ /** * Function to flush callbacks from priority queue. * * @typedef {(element:WPPriorityQueueContext)=>boolean} WPPriorityQueueFlush */ /** * Priority queue instance. * * @typedef {Object} WPPriorityQueue * * @property {WPPriorityQueueAdd} add Add callback to queue for context. * @property {WPPriorityQueueFlush} flush Flush queue for context. */ /** @type {typeof window.requestIdleCallback|typeof window.requestAnimationFrame} */ var requestIdleCallback = window.requestIdleCallback ? window.requestIdleCallback : window.requestAnimationFrame; /** * Creates a context-aware queue that only executes * the last task of a given context. * * @example *```js * import { createQueue } from '@wordpress/priority-queue'; * * const queue = createQueue(); * * // Context objects. * const ctx1 = {}; * const ctx2 = {}; * * // For a given context in the queue, only the last callback is executed. * queue.add( ctx1, () => console.log( 'This will be printed first' ) ); * queue.add( ctx2, () => console.log( 'This won\'t be printed' ) ); * queue.add( ctx2, () => console.log( 'This will be printed second' ) ); *``` * * @return {WPPriorityQueue} Queue object with `add` and `flush` methods. */ var createQueue = function createQueue() { /** @type {WPPriorityQueueContext[]} */ var waitingList = []; /** @type {WeakMap} */ var elementsMap = new WeakMap(); var isRunning = false; /** * Callback to process as much queue as time permits. * * @type {IdleRequestCallback & FrameRequestCallback} * * @param {IdleDeadline|number} deadline Idle callback deadline object, or * animation frame timestamp. */ var runWaitingList = function runWaitingList(deadline) { var hasTimeRemaining = typeof deadline === 'number' ? function () { return false; } : function () { return deadline.timeRemaining() > 0; }; do { if (waitingList.length === 0) { isRunning = false; return; } var nextElement = /** @type {WPPriorityQueueContext} */ waitingList.shift(); var callback = /** @type {WPPriorityQueueCallback} */ elementsMap.get(nextElement); callback(); elementsMap.delete(nextElement); } while (hasTimeRemaining()); requestIdleCallback(runWaitingList); }; /** * Add a callback to the queue for a given context. * * @type {WPPriorityQueueAdd} * * @param {WPPriorityQueueContext} element Context object. * @param {WPPriorityQueueCallback} item Callback function. */ var add = function add(element, item) { if (!elementsMap.has(element)) { waitingList.push(element); } elementsMap.set(element, item); if (!isRunning) { isRunning = true; requestIdleCallback(runWaitingList); } }; /** * Flushes queue for a given context, returning true if the flush was * performed, or false if there is no queue for the given context. * * @type {WPPriorityQueueFlush} * * @param {WPPriorityQueueContext} element Context object. * * @return {boolean} Whether flush was performed. */ var flush = function flush(element) { if (!elementsMap.has(element)) { return false; } elementsMap.delete(element); var index = waitingList.indexOf(element); waitingList.splice(index, 1); return true; }; return { add: add, flush: flush }; }; /***/ }) /******/ });