@babel/runtime-corejs2/helpers/isNativeFunction.js

babel's modular runtime helpers with core-js@2 polyfilling

function _isNativeFunction(fn) {
  try {
    return Function.toString.call(fn).indexOf("[native code]") !== -1;
  } catch (e) {
    return typeof fn === "function";
  }
}
module.exports = _isNativeFunction, module.exports.__esModule = true, module.exports["default"] = module.exports;