Performance

[stefanpenner]

• cache already read and unchanged files
• improve performance of source-map related work -> https://github.com/hjdivad/fast-source-map/tree/concatenator
• more intelligent caching strategy.

[vitch]

I'm definitely interested in where this could be attacked. I've been optimising our builds and have got a rebuild down to 6s (from ~22s) but the remaining time seems to be down mostly to broccoli-concat:

This is compiling an addon so everything is ending up in vendor.js and there is a lot of other stuff in that file (ember, jquery, moment, lodash etc)...

I'd be happy to try and take a look at a solution if you have any pointers on how to approach it?

[stefanpenner]

@vitch In development I would turn off source-maps. If there were produce by babel they are likely already broken, and make debugging quite painful.

If turning off source-maps addresses the above issue. Thats a good workaround, but then you also know additional work needs to be directed at fast-sourcemap not specifically this project. Any improvements there should then help out here. @krisselden is a good person to ping regarding that, as he has some WIP in the area (I am sure he would love a hand with)