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4 years ago
"use strict";
exports.__esModule = true;
exports.default = unesc;
var whitespace = '[\\x20\\t\\r\\n\\f]';
var unescapeRegExp = new RegExp('\\\\([\\da-f]{1,6}' + whitespace + '?|(' + whitespace + ')|.)', 'ig');
function unesc(str) {
return str.replace(unescapeRegExp, function (_, escaped, escapedWhitespace) {
var high = '0x' + escaped - 0x10000; // NaN means non-codepoint
// Workaround erroneous numeric interpretation of +"0x"
// eslint-disable-next-line no-self-compare
return high !== high || escapedWhitespace ? escaped : high < 0 ? // BMP codepoint
String.fromCharCode(high + 0x10000) : // Supplemental Plane codepoint (surrogate pair)
String.fromCharCode(high >> 10 | 0xd800, high & 0x3ff | 0xdc00);
});
}
module.exports = exports.default;