overleaf/libraries/overleaf-editor-core/lib/util.js

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/*
* Misc functions
*/
'use strict'
/*
* return true/false if the given string contains non-BMP chars
*/
exports.containsNonBmpChars = function utilContainsNonBmpChars(str) {
// check for first (high) surrogate in a non-BMP character
return /[\uD800-\uDBFF]/.test(str)
}