Summary: Upgrade metro-bundler to v0.9.0. This version has no functional change. The only change is that the structure of the npm package reflects the structure of the source code.
Reviewed By: bestander
Differential Revision: D5315651
fbshipit-source-id: 3a69337106d4ccf708823c80d304941973360e8e
Summary:
`retainLines` is no longer necessary with the much improved source map generation.
`sourceMaps` is handled by the transformer itself.
Reviewed By: cpojer
Differential Revision: D5237103
fbshipit-source-id: e5c6bf5aa9d553fce9c3f4d59b3ea0057d45cfdc
Summary: This folder is not necessary any longer. All the code now lives in https://github.com/facebook/metro-bundler
Reviewed By: davidaurelio, jeanlauliac
Differential Revision: D5199196
fbshipit-source-id: 35bf0f10a9163f53426db9a76f8f853dceb69167
Summary:
Pass `localPath` to transformers to allow usage of plugins like `transform-react-jsx-source` that don’t conflict with x-machine caches, e.g. Buck or our own global cache.
These caches don’t work properly if paths local to a specific machine are part of cached outputs.
Reviewed By: jeanlauliac
Differential Revision: D5044147
fbshipit-source-id: 1177afb48d6dd9351738fcd4da8f9f6357e25e81
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
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
Marshall Roch
Eli White
David Aurelio
Christoph Pojer
Jean Lauliac
Cristian Carlesso