Pro Express.js pp 321-327 | Cite as

Migrating Express.js 3.x to 4.x: Middleware, Route, and Other Changes

  • Azat Mardan


Express.js 4 ( ) is the latest (as of May 2014) major version of the most popular, mature, and robust Node.js framework for web apps, services, and APIs. There are some breaking changes in the transition from 3.x to 4.x, so this appendix serves as a brief migration guide, with coverage of the following:


Production Configuration Framework Version Major Version Included Module Update Post 
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Copyright information

© Azat Mardan 2014

Authors and Affiliations

  • Azat Mardan
    • 1
  1. 1.OaklandUS

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