[Joeri]

I worked with extjs 2 and 3 for years and honestly productivity was as high or higher than angular or react. It was a game changer and allowed us to build things an order of magnitude faster than before. I really liked it. What it lacked was a good responsiveness story, and by the time they added that I was already gone, first to backbone and later to angular and react.

The amount of vendor lock-in of Extjs is massive though. It had its own JSX-like pseudolanguage for describing UI that was impossible to port to anything else. Moving away meant a total rewrite.

[mike22]

I’m on my first gig involving front-end now, with ExtJS 3.4. A few years before I joined (was able to observe the team from a periphery) they tried using Sencha’s 3.x-to-4.0 migration tool, which left the app in a state still needing attention to every LoC. The post-Idera layoffs aren’t making 6.x look too attractive.