/*
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poly-fill
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*/
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export default function () {
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// Object.assign
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if (typeof Object.assign != 'function') {
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Object.assign = function(target, varArgs) { // .length of function is 2
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if (target == null) { // TypeError if undefined or null
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throw new TypeError('Cannot convert undefined or null to object')
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}
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var to = Object(target)
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for (var index = 1; index < arguments.length; index++) {
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var nextSource = arguments[index]
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if (nextSource != null) { // Skip over if undefined or null
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for (var nextKey in nextSource) {
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// Avoid bugs when hasOwnProperty is shadowed
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if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
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to[nextKey] = nextSource[nextKey]
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}
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}
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}
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}
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return to
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}
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}
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// IE 中兼容 Element.prototype.matches
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if (!Element.prototype.matches) {
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Element.prototype.matches =
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Element.prototype.matchesSelector ||
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Element.prototype.mozMatchesSelector ||
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Element.prototype.msMatchesSelector ||
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Element.prototype.oMatchesSelector ||
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Element.prototype.webkitMatchesSelector ||
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function(s) {
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var matches = (this.document || this.ownerDocument).querySelectorAll(s),
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i = matches.length;
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while (--i >= 0 && matches.item(i) !== this) {}
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return i > -1;
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};
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}
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}
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