1 var coreJsData = require(
'./_coreJsData');
4 var maskSrcKey = (
function() {
5 var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO ||
'');
6 return uid ? (
'Symbol(src)_1.' + uid) :
'';
16 function isMasked(func) {
17 return !!maskSrcKey && (maskSrcKey in func);
20 module.exports = isMasked;