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node-red/packages/node_modules/@node-red/editor-client/src/js/polyfills.js

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(function() {
var isIE11 = !!window.MSInputMethodContext && !!document.documentMode;
if (isIE11) {
// IE11 DOMTokenList.toggle does not support the two-argument variety
window.DOMTokenList.prototype.toggle = function(cl,bo) {
if (arguments.length === 1) {
bo = !this.contains(cl);
}
this[!!bo?"add":"remove"](cl);
}
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// IE11 does not provide classList on SVGElements
if (! ("classList" in SVGElement.prototype)) {
Object.defineProperty(SVGElement.prototype, 'classList', Object.getOwnPropertyDescriptor(HTMLElement.prototype, 'classList'));
}
// IE11 does not provide children on SVGElements
if (! ("children" in SVGElement.prototype)) {
Object.defineProperty(SVGElement.prototype, 'children', Object.getOwnPropertyDescriptor(HTMLElement.prototype, 'children'));
}
Array.from = function() {
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if (arguments.length > 1) {
throw new Error("Node-RED's IE11 Array.from polyfill doesn't support multiple arguments");
}
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var arrayLike = arguments[0]
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var result = [];
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if (arrayLike.forEach) {
arrayLike.forEach(function(i) {
result.push(i);
})
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} else {
for (var i=0;i<arrayLike.length;i++) {
result.push(arrayList[i]);
}
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}
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return result;
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}
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if (new Set([0]).size === 0) {
// IE does not support passing an iterable to Set constructor
var _Set = Set;
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/*global Set:true */
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Set = function Set(iterable) {
var set = new _Set();
if (iterable) {
iterable.forEach(set.add, set);
}
return set;
};
Set.prototype = _Set.prototype;
Set.prototype.constructor = Set;
}
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}
})();