@babel/runtime-corejs2/helpers/esm/classExtractFieldDescriptor.js

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

export default function _classExtractFieldDescriptor(receiver, privateMap, action) {
  if (!privateMap.has(receiver)) {
    throw new TypeError("attempted to " + action + " private field on non-instance");
  }
  return privateMap.get(receiver);
}