Speedtest-Tracker/conf/site/node_modules/@babel/runtime/helpers/classPrivateFieldLooseBase.js

function _classPrivateFieldBase(receiver, privateKey) {
  if (!Object.prototype.hasOwnProperty.call(receiver, privateKey)) {
    throw new TypeError("attempted to use private field on non-instance");
  }

  return receiver;
}

module.exports = _classPrivateFieldBase;