Summary:
`Libraries/JavaScriptAppEngine/Initialization/InitializeJavaScriptAppEngine.js` attempts to setup global variables typical in most JavaScript environments. It finds the previous property value using `Object.getOwnPropertyDescriptor` and preserves it as `original[PropertyName]` (if it existed), it then redefines the property using `Object.defineProperty`.
Properties may only be redefined if the property descriptor specifies that it is configurable ([MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyDescriptor)). Attempting to redefine an non-configurable property will result in an error: `TypeError: Cannot redefine property: [PropertyName]`.
Not all properties being setup in `InitializeJavaScriptAppEngine.js` are necessarily configurable in the target environment.
Closes https://github.com/facebook/react-native/pull/9244
Differential Revision: D3679683
fbshipit-source-id: cd3398ef2cdf38e58c58862e64b159951c2b22c2
Summary:
As per javache comments in #8734.
Also removes now useless feature detection check.
**Test plan**
Tested that rIC still works in UIExplorer example.
Closes https://github.com/facebook/react-native/pull/8795
Differential Revision: D3572566
Pulled By: javache
fbshipit-source-id: 261d13d8b03898313f8b4184d634c70f81a61b62
Summary:
This is a follow up of the work by brentvatne in #5052. This addresses the feedback by astreet.
- Uses ReactChoreographer with a new callback type
- Callback dispatch logic moved to JS
- Only calls into JS when needed, when there are pending callbacks, it even removes the Choreographer listener when no JS context listen for idle events.
** Test plan **
Tested by running a background task that burns all remaining idle time (see new UIExplorer example) and made sure that UI and JS fps stayed near 60 on a real device (Nexus 6) with dev mode disabled. Also tried adding a JS driven animation and it stayed smooth.
Tested that native only calls into JS when there are pending idle callbacks.
Also tested that timers are executed before idle callback.
```
requestIdleCallback(() => console.log(1));
setTimeout(() => console.log(2), 100);
burnCPU(1000);
// 2
// 1
```
I did *not* test with webworkers but it should work as I'm using executor tokens.
Closes https://github.com/facebook/react-native/pull/8569
Differential Revision: D3558869
Pulled By: astreet
fbshipit-source-id: 61fa82eb26001d2b8c2ea69c35bf3eb5ce5454ba
Summary: Changes the time drift error into a warning that will only get logged once per debugging session.
Reviewed By: jingc
Differential Revision: D3539067
fbshipit-source-id: 357db15750d867a91c39b5fc5fd6ed4ae2852bc7
Summary:
Currently, DevTools only work under ios (although this is undocumented!),
because the JavaScriptEngine initialization process skips setupDevTools() on
android.
DevTools work fine with Android, as tested on 0.26, 0.27, and 0.28 using
Nuclide's inspector.
For reference, the relevant issue on react-devtools.
Closes https://github.com/facebook/react-native/pull/8095
Reviewed By: bestander
Differential Revision: D3492788
Pulled By: andreicoman11
fbshipit-source-id: 1eda9196d7125da19a8d7baaab22b61b744ca629
Summary:
JS codes sometimes report exceptions with `null` details about stack traces, resulting in native `NullPointerException` crashes when parsing the stack traces.
Added null checking for the stack traces in `ExceptionsManager.js`, ensuring that we never call `updateExceptionMessage` with a null stack
Reviewed By: foghina
Differential Revision: D3455783
fbshipit-source-id: 027969afd8a5d6015e97fce0a26626730cfc83a4
Summary:
Currently, DevTools only work under ios (although this is undocumented!), because the JavaScriptEngine initialization process skips setupDevTools() on android.
DevTools work fine with Android, as tested on 0.26, 0.27, and 0.28 using Nuclide's inspector.
For reference, [the relevant issue on react-devtools](https://github.com/facebook/react-devtools/issues/229).
Closes https://github.com/facebook/react-native/pull/8095
Reviewed By: javache
Differential Revision: D3443980
Pulled By: bestander
fbshipit-source-id: ce0f7dd62ae0f7dfe6654380821660f8660318a6
Summary:
Currently, DevTools only work under ios (although this is undocumented!), because the JavaScriptEngine initialization process skips setupDevTools() on android.
DevTools work fine with Android, as tested on 0.26, 0.27, and 0.28 using Nuclide's inspector.
For reference, [the relevant issue on react-devtools](https://github.com/facebook/react-devtools/issues/229).
Closes https://github.com/facebook/react-native/pull/8095
Reviewed By: javache
Differential Revision: D3443980
Pulled By: andreicoman11
fbshipit-source-id: 3d7b2e83cf4158a1228d2e21510509ab63411a5d
Summary:
Cleans up `InitializeJavaScriptAppEngine` in a few ways:
- Fix bug where `global.navigation.geolocation` was being assigned to `global`.
- Rename `polyfillGlobal` to `defineProperty`.
- Rename `polyfillLazyGlobal` to `defineLazyProperty`.
- Inline `polyfillIfNeeded` (only used once).
- Rename `setUpMapAndSet` to `setUpCollections`.
- Add `flow`.
I've changed `defineProperty` and `defineLazyProperty` to always accept an `object` property since it is not only used for defining properties on `global`.
Reviewed By: davidaurelio
Differential Revision: D3472147
fbshipit-source-id: 492da62a303cf040211c386fa6260789e50b43c1
Summary:
This will let the JSC exception handling catch the error, and
display it in a red box.
Reviewed By: yungsters
Differential Revision: D3468336
fbshipit-source-id: b89335dbcebf16a881bba783c68242e2b0cd509f
Summary:
Currently, DevTools only work under ios (although this is undocumented!), because the JavaScriptEngine initialization process skips setupDevTools() on android.
DevTools work fine with Android, as tested on 0.26, 0.27, and 0.28 using Nuclide's inspector.
For reference, [the relevant issue on react-devtools](https://github.com/facebook/react-devtools/issues/229).
Closes https://github.com/facebook/react-native/pull/8095
Reviewed By: bestander
Differential Revision: D3430206
Pulled By: javache
fbshipit-source-id: 76f19407271a3779e12bd244f1bc31ef3a8659c7
Summary:
Currently, DevTools only work under ios (although this is undocumented!), because the JavaScriptEngine initialization process skips setupDevTools() on android.
DevTools work fine with Android, as tested on 0.26, 0.27, and 0.28 using Nuclide's inspector.
For reference, [the relevant issue on react-devtools](https://github.com/facebook/react-devtools/issues/229).
Closes https://github.com/facebook/react-native/pull/8095
Reviewed By: bestander
Differential Revision: D3430206
Pulled By: javache
fbshipit-source-id: 826f0252fff3f0ec2c843149540a0109e34d1d18
Summary:
`polyfillLazyGlobal` used a top level this which get stripped by babel `transform-es2015-modules-commonjs` with the default config. This is mainly an issues for people not using the react native babel preset.
This also replaces a few GLOBAL with global for consistency with the rest of the file.
**Test plan**
Tested that there was an error when using `['transform-es2015-modules-commonjs', { strict: true, allowTopLevelThis: false }]` in the babel config and that it was fixed after applying my changes.
Fixes#7700
Closes https://github.com/facebook/react-native/pull/7971
Differential Revision: D3427675
Pulled By: javache
fbshipit-source-id: 48f258b0db1bf21185193bd56df453ced9242e64
Summary:
In several pervious diffs we have moved symbolication of JS stack traces
to the packeger. This lets us save a bunch of memory (~80MB) and CPU on device,
reduces dependency on JS after exception occured.
This diff cleans up a bunch of code that was used to do symbolication on client side.
Reviewed By: javache
Differential Revision: D3348676
fbshipit-source-id: 88baa5c502836c9ca892896e1ee5d83db37486d3
Summary:
Having a function that symbolicates any given stack trace
is convenient, e.g. in #7459
More cleanup to follow.
Reviewed By: davidaurelio
Differential Revision: D3348616
fbshipit-source-id: 6313ec837869c6080829c811345a06aa1b2dcd21
Summary:
Many RN devtools (inspector, source maps, etc.) rely on packager.
This refactors individual SourceCode.scriptURL parsing into one function
that will be easier to change in the future.
Reviewed By: javache
Differential Revision: D3348465
fbshipit-source-id: 5a55939ea59e1517cb63bcbe4963f57f02ab15f3
Summary: When we're profiling, we want to load Systrace immediately and profile all the startup and initial render code. The code here used to load Systrace during startup only if `__DEV__` but would always start profiling once Systrace was otherwise required. That seems pretty hard to reason about, so I'm switching to always requiring Systrace during the startup path and enabling profiling if appropriate. In actual production that'll always be false, of course.
Reviewed By: javache
Differential Revision: D3338216
fbshipit-source-id: f173e82f34e110d83e7ff04f11af9b302a54b859
Summary:
Reuses the original property descriptor when overwriting / polyfilling globals to ensure enumerability and writability are the same
Closes https://github.com/facebook/react-native/pull/7704
Differential Revision: D3338119
Pulled By: davidaurelio
fbshipit-source-id: ab456324a3346cd3ec8b2c3e3a2378408c92087c
Summary:
See "D3291793 Symbolicate JS stacktrace using RN Packager" for the background
of why this matters. TLDR - saving tons of memory by moving symbolication from
JSC into server and cleaning up old hacks.
Before this change: a redbox causes +73MB JSC size
{F60869250}
{F60869249}
After this change: a redbox causes +1MB JSC size
{F61005061}
{F61005062}
Next step – replace JS implementation by native to show better progress and
clean up even more old APIs (ExceptionsManager.updateExceptionMessage).
Reviewed By: davidaurelio
Differential Revision: D3319151
fbshipit-source-id: 48ff4df27642ea4e1bc2414f48a8dd4d32adee50
Summary:
This make the transform behave closer to the standard for modules.
This removes the few places that a top level this was used to refer to the global space. It also clean up the usage of `GLOBAL` to use `global` instead as this is what is used everywhere else in the code base. We still define `GLOBAL` for compatibility with other modules.
**Test plan**
Clear the packager cache to make sure the transforms run again. (node ./local-cli/cli.js start --reset-cache).
Run the Movies example (UIExplorer is broken atm) and make sure there are no errors.
Closes https://github.com/facebook/react-native/pull/6255
Differential Revision: D3037227
Pulled By: mkonicek
fb-gh-sync-id: bcf1350ae7a6e92c77d3a87fc9d6e42eb93cb9b9
fbshipit-source-id: bcf1350ae7a6e92c77d3a87fc9d6e42eb93cb9b9
Summary:
This avoids requiring things that may never be used at all by the application such as WebSocket or Geolocation. It also stops us from asking for native modules
before we actually start the application enabling us to potentially be more lazy in the future.
Reviewed By: davidaurelio
Differential Revision: D3212802
fb-gh-sync-id: 70cf0d1a85f39fedc47758e5eb5df789a511bc9b
fbshipit-source-id: 70cf0d1a85f39fedc47758e5eb5df789a511bc9b
Summary: Fixes#6227 as discussed in FB group, also a follow up to ide commit 6ec4d65aec
Differential Revision: D3041185
Pulled By: javache
fb-gh-sync-id: 544c55b14d238eb8bfed3ab1588c6e48d164943e
shipit-source-id: 544c55b14d238eb8bfed3ab1588c6e48d164943e
Summary:Follow-up to https://github.com/facebook/react-native/pull/5084
This…
- changes all requires within RN to `require('fbjs/lib/…')`
- updates `.flowconfig`
- updates `packager/blacklist.js`
- adapts tests
- removes things from `Libraries/vendor/{core,emitter}` that are also in fbjs
- removes knowledge of `fbjs` from the packager
Closes https://github.com/facebook/react-native/pull/5084
Reviewed By: bestander
Differential Revision: D2926835
fb-gh-sync-id: 2095e22b2f38e032599d1f2601722b3560e8b6e9
shipit-source-id: 2095e22b2f38e032599d1f2601722b3560e8b6e9
Summary:Passing `undefined` or `null` to `clearImmediate` caused apps to crash. It it caused because we try to find the index of the null/undefined timer when we should just do nothing when passed these values.
It is already handled properly in the other Timer functions.
**Test plan**
Calling `clearImmediate` with `undefined` or `null` should do nothing.
Closes https://github.com/facebook/react-native/pull/6192
Differential Revision: D2987778
Pulled By: vjeux
fb-gh-sync-id: 6fd38cfa3c10012caa2afb27cbdab95df696a769
shipit-source-id: 6fd38cfa3c10012caa2afb27cbdab95df696a769
Summary:
public
To make sourcemaps work on Hot Loading work, we'll need to be able to serve them for each module that is dynamically replaced. To do so we introduced a new parameter to the bundler, namely `entryModuleOnly` to decide whether or not to process the full dependency tree or just the module associated to the entry file. Also we need to add `//sourceMappingURL` to the HMR updates so that in case of an error the runtime retrieves the sourcemaps for the file on which an error occurred from the server.
Finally, we need to refactor a bit how we load the HMR updates into JSC. Unfortunately, if the code is eval'ed when an error is thrown, the line and column number are missing. This is a bug/missing feature in JSC. To walkaround the issue we need to eval the code on native. This adds a bit of complexity to HMR as for both platforms we'll have to have a thin module to inject code but I don't see any other alternative. when debugging this is not needed as Chrome supports sourceMappingURLs on eval'ed code
Reviewed By: javache
Differential Revision: D2841788
fb-gh-sync-id: ad9370d26894527a151cea722463e694c670227e
Summary:
public
When we were debugging in the main window JS context in Chrome, the global environment had to be tweaked so that DOM features wouldn’t be detected.
Since we switched to debugging within a web worker, we don’t need to do this tweaks any more.
Reviewed By: bestander
Differential Revision: D2850239
fb-gh-sync-id: 886f2f7ac5c579c3fd4a424d5341bc6bc0432c0d
Summary:
At the moment we have to disable strict mode for the transform-es2015-modules-commonjs because strict mode leaks to the global scope and breaks the bridge. It was due to the way the polyfills were bundled in the package. To fix it, I wrapped the polyfill modules in an IIFE. Then when strict mode was enabled some polyfills were broken due to strict mode errors so that was fixed too. Also removed the IIFE from the polyfills that included one.
This diff doesn't enable the strict mode transform since some internal facebook modules depend on it not being enabled. When #5214 lands we could make the default babel config shipped with OSS react-native use strict mode modules and facebook could just modify the babel config to disable it if needed.
This will allow removing `"strict": false` from https://github.com/facebook/react-native/blob/master/packager/react-packager/.babelrc#L16Fixes#5316
Closes https://github.com/facebook/react-native/pull/5422
Reviewed By: svcscm
Differential Revision: D2846422
Pulled By: davidaurelio
fb-gh-sync-id: a3e2f8909aa87dabab2b872c61b887e80220fb56
Summary:
public
Map and Set are a standard JavaScript features, but are only supported in a subset of JSC versions that we target (e.g. iOS 7's JSC doesn't support Set).
The consequence of this is that failing to require('Set') before using it won't error during testing on a modern OS, but will fail on older OS versions. This diff makes the Map and Set polyfills available globally to all RN apps to avoid that problem.
Reviewed By: davidaurelio
Differential Revision: D2833997
fb-gh-sync-id: 713d8b69f6a1bce2472a1b2e6b84f69d75f30289
Alexander Blom
David Aurelio
Cameron Hunter
Gabe Levi
Janic Duplessis
Sokovikov
Tim Yung
Franklyn Tackitt
Siqi Liu
Marc Horowitz
Alex Kotliarskyi
Ben Alpert
David Aurelio
Spencer Ahrens
Pieter De Baets
Konstantin Raev
Christoph Pojer
Steven Luscher
Mike Grabowski
Martín Bigio
Dave Miller
Satyajit Sahoo
Nick Lockwood
Martin Konicek