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

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

function _classCheckPrivateStaticFieldDescriptor(descriptor, action) {
  if (descriptor === undefined) {
    throw new TypeError("attempted to " + action + " private static field before its declaration");
  }
}
module.exports = _classCheckPrivateStaticFieldDescriptor, module.exports.__esModule = true, module.exports["default"] = module.exports;