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