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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
if (typeof isHighSurrogate === 'undefined') {
var isHighSurrogate = function isHighSurrogate(s) {
var c = s.charCodeAt(0);
return c >= 0xD800 && c <= 0xDBFF;
}
}
if (typeof isLowSurrogate === 'undefined') {
var isLowSurrogate = function isLowSurrogate(s) {
var c = s.charCodeAt(0);
return c >= 0xDC00 && c <= 0xDFFF;
}
}
if (typeof isSurrogatePair === 'undefined') {
var isSurrogatePair = function isSurrogatePair(s) {
return s.length == 2 && isHighSurrogate(s[0]) && isLowSurrogate(s[1]);
}
}
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