angular2.js vs angular2.dev.js

Question

I was wondering about the differences between angular2.js and angular2.dev.js, of course there are more files like: router.dev.js and

Answer 1

angular2.dev.js uses global.Zone.longStackTraceZone = require('../zones/long-stack-trace.js') via zone.js for showing long stacktrace for angular exceptions to help with your development.

Source: https://code.angularjs.org/2.0.0-alpha.28/angular2.dev.js

Line 1984 to Line 2089