bc518174
 王天杨
提交两个项目文件
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"use strict";
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
exports.__esModule = true;
exports.request = exports.cancel = void 0;
var _canUseDOM = _interopRequireDefault(require("./canUseDOM"));
/* https://github.com/component/raf */
var prev = new Date().getTime();
function fallback(fn) {
var curr = new Date().getTime();
var ms = Math.max(0, 16 - (curr - prev));
var handle = setTimeout(fn, ms);
prev = curr;
return handle;
}
var vendors = ['', 'webkit', 'moz', 'o', 'ms'];
var cancelMethod = 'clearTimeout';
var rafImpl = fallback; // eslint-disable-next-line import/no-mutable-exports
var getKey = function getKey(vendor, k) {
return vendor + (!vendor ? k : k[0].toUpperCase() + k.substr(1)) + "AnimationFrame";
};
if (_canUseDOM.default) {
vendors.some(function (vendor) {
var rafMethod = getKey(vendor, 'request');
if (rafMethod in window) {
cancelMethod = getKey(vendor, 'cancel'); // @ts-ignore
rafImpl = function rafImpl(cb) {
return window[rafMethod](cb);
};
}
return !!rafImpl;
});
}
var cancel = function cancel(id) {
// @ts-ignore
if (typeof window[cancelMethod] === 'function') window[cancelMethod](id);
};
exports.cancel = cancel;
var request = rafImpl;
exports.request = request;
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