Summary:
This fixes issues that only surface when running with node4 / npm2.
Closes https://github.com/facebook/react-native/pull/11888
Differential Revision: D4415021
Pulled By: bestander
fbshipit-source-id: 8672cd892c9dae41cc7b5b7b3227eb24dd780d22
Summary:
Introduces a new mechanism to build source maps that allows us to use real mapping segments instead of just mapping line-by-line.
This mechanism is only used when building development bundles to improve the debugging experience in Chrome.
The new mechanism takes advantage of a new feature in babel-generator that exposes raw mapping objects. These raw mapping objects are converted to arrays with 2, 4, or 5 for the most compact representation possible.
We no longer generate a source map for the bundle that maps each line to itself in conjunction with configuring babel generator to retain lines.
Instead, we create a source map with a large mappings object produced from the mappings of each individual file in conjunction with a “carry over” – the number of preceding lines in the bundle.
The implementation makes a couple of assumptions that hold true for babel transform results, e.g. mappings being in the order of the generated code, and that a block of mappings always belongs to the same source file. In addition, the implementation avoids allocation of objects and strings at all costs. All calculations are purely numeric, and base64 vlq produces numeric ascii character codes. These are written to a preallocated buffer objects, which is turned to a string only at the end of the building process. This implementation is ~5x faster than using the source-map library.
In addition to providing development source maps that work better, we can now also produce individual high-quality source maps for production builds and combine them to an “index source map”. This approach is unfeasable for development source maps, because index source map consistently crash Chrome.
Better production source maps are useful to get precise information about source location and symbol names when symbolicating stack traces from crashes in production.
Reviewed By: jeanlauliac
Differential Revision: D4382290
fbshipit-source-id: 365a176fa142729d0a4cef43edeb81084361e54d
Summary:
This code is a bit sloppy, I need to rethink about it. So I prefer to remove it altogether for now.
The problem with this is that it is disabling the global cache "put" operations at the same time, so the script supposed to update the cache actually doesn't do the job past the fist few hundred files. This defeats the purpose of the global cache.
Reviewed By: cpojer
Differential Revision: D4346927
fbshipit-source-id: 5b668e66b1909f53783772c613781753ac605546
Summary:
Keep track of the number of cache misses. If we have a series of misses but then we
start seeing hits, then we progressively reset the counter. If there are too many misses, we just give up on the global cache.
Reviewed By: cpojer
Differential Revision: D4326689
fbshipit-source-id: 5606fc860cbb9d7e9e877c0d1dc4e6a6a1cbcd98
Summary:
This kills fastfs in favor of Jest's hasteFS. It gets rid of a ton of code, including the mocking code in ResolutionRequest which we don't need any more. Next step after this is to rewrite HasteMap, ModuleCache, Module/Package. We are getting closer to a nicer and faster world! :)
Here is what I did:
* Use Jest's HasteFS instead of fastfs. A fresh instance is received every time something changes on the FS.
* HasteFS is not shared with everything any more. Only one reference is kept in DependencyGraph and there are a few smaller functions that are passed around (getClosestPackage and dirExists). Note: `dirExists` now does fs access instead of an offline check. This sucks but stat calls aren't slow and aren't going to be a bottleneck in ResolutionRequest, I promise! When it is time to tackle a ResolutionRequest rewrite with jest-resolve, this will go away. "It gets worse before it gets better" :) The ModuleGraph equivalent does *not* do fs access and retains the previous way of doing things because we shouldn't do online fs access there.
* Add flow annotations to ResolutionRequest. This required a few tiny hacks for now because of ModuleGraph's duck typing. I'll get rid of this soon.
* Updated ModuleGraph to work with the new code, also created a mock HasteFS instance there.
* I fixed a few tiny mock issues for `fs` to make the tests work; I had to add one tiny little internal update to `dgraph._hasteFS._files` because the file watching in the tests isn't real. It is instrumented through some function calls, therefore the hasteFS instance doesn't get automatically updated. One way to solve this is to add `JestHasteMap.emit('change', …)` for testing but I didn't want to cut a Jest release just for that. #movefast
(Note: I will likely land this in 1.5 weeks from now after my vacation and I have yet to fully test all the product flows. Please give me feedback so I can make sure this is solid!)
Reviewed By: davidaurelio
Differential Revision: D4204082
fbshipit-source-id: d6dc9fcb77ac224df4554a59f0fce241c01b0512
Summary:
This removes support for `require('image!…')`, which has been deprecated for a long time.
It is still possible to use images that are already bundled by the native app using the `nativeImageSource` module.
Check http://facebook.github.io/react-native/docs/images.html for detailed documentation.
Reviewed By: matryoshcow
Differential Revision: D4231208
fbshipit-source-id: 05ec4c1ca0fabdc3fbb652f8ad1acdf240a67955
Summary: This fixes a piece of promise code that didn’t handle nested rejections. This caused the packager not to recover from transform errors, as the server was waiting for an in-limbo promise forever.
Reviewed By: cpojer
Differential Revision: D4207138
fbshipit-source-id: 8e94ddebd033073f90b79b1c4820c09ac98a4932
Summary: In addition to adding flow in that file, I also had to fix `Module.js` and others to make everything compatible together.
Reviewed By: davidaurelio
Differential Revision: D4118829
fbshipit-source-id: 4f6dbc515741c38817cc4c9757e981fabb03915a
Summary: I originally added fastpath to node-haste to speed up `path` operations by an order of magnitude. Now we are exclusively using Node 6 at FB so we don't need to ship this thing any more.
Reviewed By: bestander
Differential Revision: D4029092
fbshipit-source-id: 064cf67f4f79ce4f2774fb4e430d22eef4a95434
Summary:
Since jest stopped using node-haste a while ago, we are the only client left.
This brings back node-haste back to fbsource to allow us to iterate faster.
Reviewed By: bestander
Differential Revision: D3641341
fbshipit-source-id: a859f8834765723a3515e2cf265581b9dd83997c
Jean Lauliac
Jing Chen
David Aurelio
Christoph Pojer
Gabe Levi
Ovidiu Viorel Iepure