recharts/es6/util/createEventProxy.js

React charts

export function createEventProxy(reactEvent) {
  reactEvent.persist();
  var {
    currentTarget
  } = reactEvent;
  return new Proxy(reactEvent, {
    get: (target, prop) => {
      if (prop === 'currentTarget') {
        return currentTarget;
      }
      var value = Reflect.get(target, prop);
      if (typeof value === 'function') {
        return value.bind(target);
      }
      return value;
    }
  });
}