77 lines
2.8 KiB
JavaScript
77 lines
2.8 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports["default"] = throttleByAnimationFrame;
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exports.throttleByAnimationFrameDecorator = throttleByAnimationFrameDecorator;
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var _raf = _interopRequireDefault(require("raf"));
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
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function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }
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function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
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function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(n); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
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function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter); }
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function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }
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function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
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function throttleByAnimationFrame(fn) {
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var requestId;
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var later = function later(args) {
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return function () {
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requestId = null;
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fn.apply(void 0, _toConsumableArray(args));
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};
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};
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var throttled = function throttled() {
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if (requestId == null) {
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for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
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args[_key] = arguments[_key];
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}
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requestId = (0, _raf["default"])(later(args));
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}
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};
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throttled.cancel = function () {
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return _raf["default"].cancel(requestId);
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};
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return throttled;
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}
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function throttleByAnimationFrameDecorator() {
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// eslint-disable-next-line func-names
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return function (target, key, descriptor) {
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var fn = descriptor.value;
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var definingProperty = false;
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return {
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configurable: true,
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get: function get() {
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// eslint-disable-next-line no-prototype-builtins
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if (definingProperty || this === target.prototype || this.hasOwnProperty(key)) {
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return fn;
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}
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var boundFn = throttleByAnimationFrame(fn.bind(this));
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definingProperty = true;
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Object.defineProperty(this, key, {
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value: boundFn,
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configurable: true,
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writable: true
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});
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definingProperty = false;
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return boundFn;
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}
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};
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};
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} |