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Author SHA1 Message Date
Jean Lauliac 219328d000 packager: preprocess outdated dependencies 
Summary:
Note: if this changeset causes some breakage, consider disabling rather than reverting. To disable, the call to `_preprocessPotentialDependencies` in `ResolutionRequest` can be removed.

It's a bit of an experiment. I couldn't see any particular regression caused by this, but I could see net improvement of the global cache performance, as it unlock much, much stronger batching: indeed, instead of discovering dependencies progressively, we synchronously figure out the list of all potential modules of a bundle, and kick-off cache fetching and/or transformations. So when it comes to fetching from the global cache, it'll do less requests, and each requests will ask for considerably more keys at a time.

Potential problem caused by this changeset: if a module's dependencies completely changed, then the first time we try to build the bundle it'll start transforming modules that we probably don't care at all anymore, spending precious CPU time for nothing. I've been thinking about it and I cannot see such a case happening much often. Even if it happens, it should not cause any bug or corruption, it would just take additional time.

Other potential problem: that this new code doesn't handle some types of edge cases. It's quite hard to figure out what could possibly break in the `ResolutionRequest` code (and I think it would benefit from a larger refactor). We do have a good test coverage for `DependencyGraph` and it seems to work smoothly, so I'm relatively confident we're not breaking edge cases.

Reviewed By: davidaurelio

Differential Revision: D4875467

fbshipit-source-id: 2dfcc755bec638d3d1c47862ec1de5220953e812
 2017-04-13 10:31:30 -07:00
Christoph Pojer 5403946f09 Fix lint errors 1/n 
Reviewed By: davidaurelio

Differential Revision: D4627645

fbshipit-source-id: 3cf368c6a24a555b7d0a39045f6ba6fd92ae34e1
 2017-02-28 09:00:42 -08:00
Jean Lauliac bac576c433 packager: BatchProcessor: use Promise for queue() 
Reviewed By: cpojer

Differential Revision: D4572181

fbshipit-source-id: 34c3824f05efd93847df9ba5931b0735c6711c28
 2017-02-20 08:45:19 -08:00
Christoph Pojer fc60f5948a Change transformCacheKey to getTransformCacheKey 
Reviewed By: jeanlauliac

Differential Revision: D4506459

fbshipit-source-id: cd42cb4f09c0130d08c27e3a097710b91c5dc6ba
 2017-02-09 04:03:17 -08:00
Christoph Pojer a2c84d14ce Remove react-packager indirection. 
Summary:
This moves the `src` directory one level up and removes the `react-packager` folder. Personally, I always disliked this indirection. I'm reorganizing some things in RNP, so this seems to make sense.

Not sure if I forgot to update any paths. Can anyone advice if there are more places that need change?

Reviewed By: jeanlauliac

Differential Revision: D4487867

fbshipit-source-id: d63f9c79d6238300df9632d2e6a4e6a4196d5ccb
 2017-02-02 05:44:15 -08:00