@babel/runtime/helpers/esm/superPropBase.js

babel's modular runtime helpers

import getPrototypeOf from "./getPrototypeOf";
export default function _superPropBase(object, property) {
  while (!Object.prototype.hasOwnProperty.call(object, property)) {
    object = getPrototypeOf(object);
    if (object === null) break;
  }

  return object;
}