## [3.4.1](https://github.com/socketio/engine.io-client/compare/3.4.0...3.4.1) (2020-04-17)


### Bug Fixes

* use globalThis polyfill instead of self/global ([357f01d](https://github.com/socketio/engine.io-client/commit/357f01d90448d8565b650377bc7cabb351d991bd))