xmpp.chapril.org-conversejs/src/polyfill.js

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if (!String.prototype.endsWith) {
String.prototype.endsWith = function (searchString, position) {
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var subjectString = this.toString();
if (position === undefined || position > subjectString.length) {
position = subjectString.length;
}
position -= searchString.length;
var lastIndex = subjectString.indexOf(searchString, position);
return lastIndex !== -1 && lastIndex === position;
};
}
if (!String.prototype.startsWith) {
String.prototype.startsWith = function (searchString, position) {
position = position || 0;
return this.substr(position, searchString.length) === searchString;
};
}
if (!String.prototype.splitOnce) {
String.prototype.splitOnce = function (delimiter) {
var components = this.split(delimiter);
return [components.shift(), components.join(delimiter)];
};
}
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if (!String.prototype.trim) {
String.prototype.trim = function () {
return this.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, '');
};
}