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9 lines
274 B
9 lines
274 B
var _indexOfInstanceProperty = require("../core-js/instance/index-of");
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function _isNativeFunction(fn) {
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var _context;
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return _indexOfInstanceProperty(_context = Function.toString.call(fn)).call(_context, "[native code]") !== -1;
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}
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module.exports = _isNativeFunction;
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