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perf(@vant/lazyload): remove CustomEvent polyfill (#9589)

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neverland 2021-09-29 17:31:05 +08:00 committed by GitHub
parent e8186795b7
commit 7aba794d80
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2 changed files with 0 additions and 21 deletions
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1
packages/vant-lazyload/src/lazy.js
View File

@ -1,7 +1,6 @@
import { nextTick } from 'vue';
import {
inBrowser,
CustomEvent,
remove,
find,
_,

20
packages/vant-lazyload/src/util.js
View File

@ -11,25 +11,6 @@ export const modeType = {
observer: 'observer',
};
// CustomEvent polyfill
const CustomEvent = (function () {
if (!inBrowser) return;
if (typeof window.CustomEvent === 'function') return window.CustomEvent;
function CustomEvent(event, params) {
params = params || { bubbles: false, cancelable: false, detail: undefined };
const evt = document.createEvent('CustomEvent');
evt.initCustomEvent(
event,
params.bubbles,
params.cancelable,
params.detail
);
return evt;
}
CustomEvent.prototype = window.Event.prototype;
return CustomEvent;
})();
function remove(arr, item) {
if (!arr.length) return;
const index = arr.indexOf(item);
@ -284,7 +265,6 @@ class ImageCache {
export {
ImageCache,
inBrowser,
CustomEvent,
remove,
find,
noop,