react-router-ga/example/node_modules/@babel/runtime/helpers/esm/classPrivateFieldDestructureSet.js

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export default function _classPrivateFieldDestructureSet(receiver, privateMap) {
  if (!privateMap.has(receiver)) {
    throw new TypeError("attempted to set private field on non-instance");
  }

  var descriptor = privateMap.get(receiver);

  if (descriptor.set) {
    if (!("__destrObj" in descriptor)) {
      descriptor.__destrObj = {
        set value(v) {
          descriptor.set.call(receiver, v);
        }

      };
    }

    return descriptor.__destrObj;
  } else {
    if (!descriptor.writable) {
      throw new TypeError("attempted to set read only private field");
    }

    return descriptor;
  }
}