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rollup / rollup-watch

Fast incremental rebuilds with Rollup CLI
MIT License
91 stars 23 forks source link

Slow builds #5

Closed PaulBGD closed 8 years ago

PaulBGD commented 8 years ago

First off, congrats on the release. This is a much awaited feature.

The build times however are not too great. I'm bundling react and a couple of internal files and my build times look like:

2715ms > 2065ms > 2052ms > ...

700ms is definitely an improvement, but not by much. What needs to be done to improve the rebuild speed?

TrySound commented 8 years ago

Now rollup caches and reuses transformations result, but it still parses and shakes modules each time.

TrySound commented 8 years ago

@Rich-Harris Some time ago disabling tree shaking was introduced. Maybe with that option we can cache a bit more and prevent reparsing for it? In this case we could enable tree shaking only for prod.

Rich-Harris commented 8 years ago

Hey – I've moved this issue over to https://github.com/rollup/rollup/issues/723, as rollup-watch is just a small wrapper that sits between Rollup and the filesystem.