Summary: When turning on Fast Refresh, we might have a compile error in previously saved files. We used to ignore it until a file is saved again, leading to a confusing experience. This changes it so that we remember the last compile error, and show it _either_ when we get it (if Fast Refresh is off), or when we _turn it on_.
Reviewed By: cpojer
Differential Revision: D16359160
fbshipit-source-id: 8dc237563c2a271a23019a32ff85b57de99cfabe
Summary: Right now we are using a local boolean and `bundle-registered` to hide the "Refresh" banner on the first update from the server (right after loading the bundle). This change adds `isInitialUpdate` to the `update-start` message which I'm now using to disable the banner. This also simplifies the HMRClient a little bit.
Reviewed By: cpojer
Differential Revision: D16357287
fbshipit-source-id: 29e72774989c4ba895a85be06a366e1b2fe7c02f
Summary:
If you change a file while Fast Refresh is off, this now stashes an update instead of ignoring it. When/if you turn it on, we will apply those stash updates. This solves the confusion that can happen when you enable it midway after making a bunch of changes, and therefore makes the experience more reliable.
**This current implementation is unfortunate because the app memory load increases with the number of file saves. This isn't really sustainable. So in the next diff I will change it to only remember the *latest versions* of every edited file instead.**
Reviewed By: cpojer
Differential Revision: D16344332
fbshipit-source-id: 69609a00eb9022f6b2797269fa091fa1b4125dd1
Summary:
We want to move to a world where Fast Refresh is on by default. As a first step, we can register the bundle early. This means we'll start receiving hot updates via the socket even if Fast Refresh is off. We'll just be ignoring those.
Anecdotally people with Fast Refresh on have had good experience even with invasive changes like branch switches. So this seems like a good way to test the waters further. It's also a prerequisite to unlocking a nicer experience where you can turn it on anytime and "catch up" on the changes you've missed. (That's out of scope of this diff.)
Reviewed By: cpojer
Differential Revision: D16344019
fbshipit-source-id: 6e5f8278909810b32c80e0af010251c876e4313b
Summary:
Two changes:
1. `disable` -> `close` to better match what's happening.
2. `enable` is inlined in the constructor because it's always called right after the constructor.
Reviewed By: rickhanlonii
Differential Revision: D16340009
fbshipit-source-id: 38a906b1ab3f5b39a57d2598ba400a2f03903951
Summary:
This adds a loading indicator when loading split bundles so that users get a visual indicator about what is going on.
Note that I am currently trying to get the dynamic message that shows the number of modules and percentage to work but it appears that the JavaScript networking client (XMLHttpRequest + RCTNetwork) are not set up to deal with multipart responses in the same way as our native multipart handlers are. I'd like to put this in place now and polish it later if it's possible to fix the issue (I spent all afternoon yesterday trying to make multipart messages work and failed :( ).
Reviewed By: gaearon
Differential Revision: D16281531
fbshipit-source-id: 84e53d7f25642398ed51d8f552919880b8090897
Summary:
This view will be re-used for bundle splitting so I'm changing the name to be more generic as it can be used for informing users of any loading activity.
I also cleaned up the files a bit from a class to just an object.
Reviewed By: gaearon
Differential Revision: D16281367
fbshipit-source-id: 5c2ee7790d29ccba473bd6e90737d2f0581e6291
Summary:
This diff builds on the previous ones and changes the setup process from using the WebSocket URL to using a message that is sent after the connection is established. It also exposes a function on the HMRClient that allows registering more bundles, which I will make use of in the next (and hopefully final :D ) diff.
I was initially planning on using structured data, like `{bundleName, platform}` but decided to keep using URLs as that is the format used throughout Metro. In fact, when we parse the options from the URL, we need to re-encode the input URL to create the `sourceMapUrl`. I thought it doesn't make sense to write more code to send structured data over the connection only to re-construct a URL on the server manually.
Finally, I also slightly modified the "Internal Bundler" error that is shown in a RedBox (now used by the websocket connection if an invalid message is received). I removed the "internal" wording from the message and I'm actually attaching the failure message to the error instead of directing users to the Terminal.
Reviewed By: gaearon
Differential Revision: D16162729
fbshipit-source-id: 977fde5f6c2f1c14efb4fd99ed30a6bf95a3b13e
Summary:
Previously, Fast Refresh socket was initialized lazily. This changes it to be initialized eagerly, even if Fast Refresh is off.
This makes it easier to reason about different states the app can be in. It also lets us later change the code to stash away updates even when Fast Refresh is off — and apply them when you turn it on. (That's out of scope of this diff).
This change should not be user observable. Even if setting up the socket fails, the error is saved, and should only be shown once you turn it on. (AFAIK, D16286232 fixes the last error that was shown unconditionally.)
Reviewed By: rickhanlonii
Differential Revision: D16287232
fbshipit-source-id: a88f9c9f72847074876087da46e19dffa4eb82eb
Summary: I originally added `forceFullRefresh` as an escape hatch in case Fast Refresh is too unreliable. In practice we haven't seen any major issues with it. Since this option is already very obscure, I'm just removing it.
Reviewed By: shergin
Differential Revision: D16286632
fbshipit-source-id: c3dc44cffd459912e194e273acf868f3380c64cc
Summary:
This fixes a problem that occurs when:
1. You run an Android app with Fast Refresh on
2. Kill the app
3. Start the app again
We used to redbox (on Android only). This is probably because we are missing some check on the native side, and we try to enable the socket anyway.
We could potentially fix this on the native side. But also, there's no good reason why this code needs to ever throw an error if Fast Refresh is disabled.
So I'm unifying it with the existing code path for other Fast Refresh errors. They are ignored when it's off, shown as yellowboxes when it's on, and shown as redboxes if you intentionally try to turn it off and on again.
I'm also adding core to prevent logging more than one Fast Refresh warning. Since they're not super actionable and usually indicate the same problem (e.g. Metro not running). The earliest one wins.
Reviewed By: rickhanlonii
Differential Revision: D16286232
fbshipit-source-id: bf3960f11c767a2352b1282d46950e4ba9e5031d
Summary: This diff changes a few things around so that a diff coming on top of this stack will be smaller. The aim of this change is to add a method `registerEntryPoint` which will allow a client to subscribe to updates for multiple bundles.
Reviewed By: gaearon
Differential Revision: D16131963
fbshipit-source-id: d460d6647b15a711021c7a3a51f52486a1aea535
Summary:
Running a PROD JS bundle with a DEV binary used to redbox with Fast Refresh on. The error said "HMRClient is not a registered callable module".
This isn't a new issue: https://www.google.com/search?q=%22hmrclient%20is%20not%20a%20registered%22. However, now it happens every time because `setup()` is now called unconditionally in a DEV native build.
Because a combination of DEV binary + PROD JS is technically possible, I'm adding a tiny shim that will make it a no-op instead of crashing. It will also explain what's wrong if you *intentionally* try to turn on Fast Refresh.
Reviewed By: sahrens
Differential Revision: D16145378
fbshipit-source-id: 0b9c0a6f30c02ca7f4a0133048450bdde3576ad2
Summary: D16107933 disabled the logs around setup unless they are explicitly enabled and this diff disables all logs from this module entirely unless they are explicitly turned on at the top of the file.
Reviewed By: gaearon
Differential Revision: D16108151
fbshipit-source-id: 355aaf8624fb0778884f25f02d58fe4e1237d686
Summary: This module logs helpful messages in `__DEV__` but it only logs actionable performance logs when the flag on top of the file is enabled. This diff changes those to only log when the toggle on top of the file is enabled as well.
Reviewed By: gaearon
Differential Revision: D16107933
fbshipit-source-id: 7671bc521af984d617a0f5ffc0eacd1aa5674a62
Summary:
Metro symbolication can be expensive in large apps. However, there is no need to symbolicate _runtime stacks from compile errors_. Those are pretty much useless anyway.
This will reduce the workload on Metro workers, and the delays when iterating with Fast Refresh, as the server will be busy much less often.
So I'm special-casing them and not sending the symbolication request anymore.
Reviewed By: rickhanlonii
Differential Revision: D16030087
fbshipit-source-id: 41f83ac01780c0a60cca777014e4ed95c0f3d14b
Summary: If you make a syntax error while there is a redbox while Fast Refresh is on, we should dismiss that redbox. Otherwise there is no way for you to tell why your code is not working.
Reviewed By: rickhanlonii
Differential Revision: D15970337
fbshipit-source-id: 1ca6c9a1b2269d198ae726d3b64e5c51506503db
Summary:
If the error doesn't come in direct response to a user action, I think a redbox is too severe. I think we don't want to associate turning on Fast Refresh with a higher frequency of redboxes. So this downgrades these messages to warnings.
If you manually try to turn it off and on again, we'll still show a redbox to remind why it's not working.
Reviewed By: rickhanlonii, cpojer
Differential Revision: D15958952
fbshipit-source-id: bd144c98e87a9836871391ac583c268dca8009b3
Summary:
We have too many options in the Dev Menu, and they're really hard to pick from. They're also somewhat conflicting. This replaces two menu choices that have a similar purpose (faster iteration cycle) with one.
"Fast Refresh" tries to only update the affected modules, but falls back to doing a full reload if the update can't be handled by the React components.
If for some reason you prefer the "Reload-on-Save" behavior, please:
- Reach out to me so I can learn more about your use case.
- As a workaround, you can add `if (__DEV__) require.Refresh.forceFullRefresh = true` to your app's entry point to always do a full refresh.
Also note that I only removed the user-facing part of "Reload-on-Save". So if you have automation depending on it, that's gonna keep working.
I moved it above Systrace since it's a more generic feature.
As a total aside nit, I renamed "Enable Inspector" and "Disable Inspector" to "Show Inspector" and "Hide Inspector" because... that's what those options do, really.
Reviewed By: rickhanlonii
Differential Revision: D15958697
fbshipit-source-id: 20e856d56f661fe4d39b5ab47d8c44754bf70f67
Summary:
Since we always create `module.hot` objects, the `module.hot` checks were unnecessary. They give a false impression that we're checking for a Hot Reloading mode. However, they're just Flow refinements and always exist in DEV. I made that explicit by throwing early.
Similarly, I removed a `module.hot` check inside `setupReactRefresh`, as it is always truish in DEV.
Finally, I'm adding a new mechanism as an escape hatch. It lets you do:
```
if (__DEV__) {
require.Refresh.forceFullRefresh = true;
}
```
in your entry point and opt into full refreshes on every edit. This sounds similar to "Reload-on-Save". That is because in the next diff, I plan to remove "Reload-on-Save" from user-visible options (but it'll stay for automated workflows).
So this workaround is intended for people who for one reason or another don't want to opt into Hot Reloading as an alternative. We'll need to talk to them and find out why.
Reviewed By: rickhanlonii
Differential Revision: D15958475
fbshipit-source-id: 674187ddf86a4e286dfae28f4182555a8b5d7396
Summary:
As we saw in D15947985, and later traced down to D5623623, the `hot` option isn't used by Metro anymore. The relevant transforms _always_ run in DEV regardless of the option.
Given that, it doesn't make sense that enabling or disabling Hot Reloading forces a full refresh. This significantly raises the usage barrier because **currently, you might have to wait ~20 seconds (on a large app) to just start using Hot Reloading when you're already in the middle of some screen.** So you just end up not using it.
This diff changes enabling/disabling Hot Reloading to be _instant_.
Here's how it works:
1. Now we always send the necessary info to the client via the new `HMRClient.setup()` function. It creates a Metro HMR client instance, but only actually sets up the socket if Hot Reloading is on.
2. The "Enable Hot Reloading" menu no longer forces a reload. Instead, it calls `HMRClient.enable()` which lazily sets up a socket (at most once).
3. The "Disable Hot Reloading" menu also doesn't trigger a refresh now. Instead, it calls `HMRClient.disable()`. We don't actually tear down the socket here because it's a pain to deal with race conditions and such. Instead, we keep the connection — but we _ignore the updates_ that come in while we're disabled.
4. As a result, it is possible to enable and disable it many times during a single session. (Updates while disabled would be ignored — which has a risk of making your running app inconsistent — but I'd argue it's expected and is worth it. You can always save a particular file to force it to update once the mode is on.)
5. In order to support "ignoring" updates, Metro's `HMRClient` (not to be confused with RN's module) now supports a `shouldApplyUpdates` field. The RN module uses it to disable handling updates when the mode is off.
6. In case there is an error that makes hot reloading unavailable (such as the server disconnecting), we surface the error only if the mode is on. If the mode is off, we stash the error message in the `_hmrUnavailableReason` variable, and display it next time you try to enable Hot Reloading.
Reviewed By: rickhanlonii
Differential Revision: D15958160
fbshipit-source-id: 8256fc4d5c2c3f653a78edf13b8515a5671953e4
Summary: The current grey one is very bland, hard to read (no contrast) and often looks like a bug. I've changed it to match the iOS Personal Hotspot colors which look more idiomatic.
Reviewed By: cpojer
Differential Revision: D15941200
fbshipit-source-id: d60a3744c73675b40f42c329c2a44e6b8b0a93dc
Summary:
D10527979 made the "update" message sequence part of initial connection signals. But the HMR client uses this sequence as a signal to show "Hot Reloading..." bar. As a result, we were showing it on every initial load when Hot Reloading is on. This is very confusing.
As a simple fix, I now send an explicit message to mark the end of the first load. I could infer that by first update message but figured this is more explicit and less likely to break. Until we receive `connection-done`, we now don't attempt to show the "Hot Reloading..." bar.
Reviewed By: rubennorte
Differential Revision: D15936085
fbshipit-source-id: b18b6aceea6c47d919b4265e58b21fc44f77b0b3
Summary:
This diff removes an option from the codegen and replaces it with two new options
Removes:
- `isDeprecatedPaperComponentNameRCT`
Adds:
- `paperComponentName`: a better version of the removed option that allows more than just adding RCT
- `paperComponentNameDeprecated`: a new option that allows migrating native code to a new name
```
// Use for components with no current paper rename in progress
// Does not check for new name
paperComponentName?: string,
// Use for components currently being renamed in paper
// Will use new name if it is available and fallback to this name
paperComponentNameDeprecated?: string,
```
For example, Slider uses `paperComponentName: 'RCTSlider'` because it has a different name in fabric but is not currently being migrated to a new name. Because of other work in progress, we don't want to use UIManager check if we don't need to
Reviewed By: shergin
Differential Revision: D15857629
fbshipit-source-id: ca0d3b7dc4a75e00d136ae1f5c84f7423960399d
Summary: For better perf with TurboModule, cache the return value of NativePlatformConstants*.getConstants() in JS so that we avoid going back into native (from JS) for each call. This specific method is called very frequently throughout RN codebase.
Reviewed By: mdvacca
Differential Revision: D15893289
fbshipit-source-id: ce8016ed7d3efb420df93e27dbfa77d7d4f06cf8
Summary: This diff adds the generated view config for View (in DEV)
Reviewed By: ejanzer
Differential Revision: D15780039
fbshipit-source-id: 1ec8ed1b57fd2341552746051980129848cb8e85
Summary: This diff turns on codegen for Slider and Switch
Reviewed By: TheSavior
Differential Revision: D15738544
fbshipit-source-id: a0dfb5b05fd62f28fc3865855986e49598dd5e19
Summary:
This diff adds a testing screen dev route to the facebook app for testing generated view configs
It's not pretty (i have 0 tetra experiance) but it gets the job done
There are three cases handled:
- No generated config �
- Invalid generated config (useful for dev) �
- Valid generated config �
On the description page we:
- Redbox it it's invalid (this could be used to redbox test all host components)
- Show diffs of the view config properties
- List all of the generated config properties
- List all of the native config properties
Using this tool, it's easy to see what the current config on native is, add correct flow types for the generated config, and validate the generated config
Coming later: adding all of the native configs to the list (will probably need filtering)
Reviewed By: cpojer
Differential Revision: D15683033
fbshipit-source-id: 5a566a56bef4f3f0bac3ea581c2e6acb2b9984e3
Summary: `verifyComponentAttributeEquivalence` checks the new JS view configs against what we get from native at runtime (in dev only). This breaks in bridgeless mode because there is no paper UIManager to ask for the viewconfigs from; this diff uses the flag from D15721940 to skip this check.
Reviewed By: fkgozali
Differential Revision: D15722127
fbshipit-source-id: d9227107e0ff7814c34beaae6461bb8232699c94
Summary:
This diff updated the codegen flow types syntax replacing:
```
type Options = {
isDeprecatedPaperComponentNameRCT: true,
};
type ActivityIndicatorNativeType = CodegenNativeComponent<
'ActivityIndicatorView',
NativeProps,
Options,
>;
module.exports = ((requireNativeComponent(
'RCTActivityIndicatorView',
): any): ActivityIndicatorNativeType);
```
with:
```
export default codegenNativeComponent<NativeProps>('ActivityIndicatorView', {
isDeprecatedPaperComponentNameRCT: true,
});
```
This is from Tim's comment in the [View Config Codegen Quip](https://fb.quip.com/jR2aASHad4Se):
> What it CodegenNativeComponent were instead `NativeComponent.fromFlow<T>('…')` that returned `'...'`?
>And the Babel plugin swapped it for NativeComponent.fromSchema('...', {…}) which would both register and return '...'?
I went with `codegenNativeComponent` because it has nice parity with `requireNativeComponent`
I also didn't update the babel output here (we can update that whenever) because I think `registerGeneratedViewConfig` is more clear for what it's doing
Reviewed By: cpojer
Differential Revision: D15602077
fbshipit-source-id: 2d24dc32136ba6d31724f8c929b51417ba625a58
Summary:
This diff updated the format of generated view configs so that they don't need to spread View props into every config, by adding a new registerGeneratedConfig function which will spread them instead
This is a bit of a cleanup of the generated output but is primarily so that the view config babel plugin will not need to rely on object spreading or object.assigns
Reviewed By: TheSavior, cpojer
Differential Revision: D15517199
fbshipit-source-id: 08e575578177bad12d40ee3dcad9381974b6466d
Summary:
Addresses a number of pieces of feedback regarding the debug menu.
- Simplify labels for the debugger actions (e.g. no "remote", no emoji).
- Reorder actions so that modal items are generally lower.
- Changed "Toggle Inspector" to "Show/Hide Inspector".
- Renamed "Live Reloading" to "Reload-on-Save".
- Hide disabled debug items when profiling is enabled.
- Changed "Start Systrace" to "Systrace Unavailable" when debugging.
- Renamed "Change packager location" to "Configure Bundler".
- Revised nomenclature in "Configure Bundler" menu to be clearer.
- Removed extraneous debug menu title.
- Consistently refer to HMR as "Hot Reloading".
Changelog:
[iOS] [Changed] - Cleaned up debug menu.
Reviewed By: axe-fb
Differential Revision: D15548628
fbshipit-source-id: 26b2ddca8280d1f6f8ff904439b403600e98a3b3
Summary:
This is an ESLint plugin that infers whether an import looks like a Haste module name. To keep the linter fast and simple, it does not look in the Haste map. Instead, it looks for uppercase characters in single-name import paths, since npm has disallowed uppercase letters in package names for a long time. There are some false negatives (e.g. "merge" is a Haste module and this linter rule would not pick it up) but those are about 1.1% of the module names in the RN repo, and unit tests and integration tests will fail anyway once Haste is turned off.
You can disable the lint rule on varying granular levels with ESLint's normal disabling/enabling mechanisms.
Also rewrote more Haste imports so that the linter passes (i.e. fixed lint errors as part of this PR).
## Changelog
[General] [Changed] - Add a lint rule to disallow Haste imports
Pull Request resolved: https://github.com/facebook/react-native/pull/25058
Differential Revision: D15515826
Pulled By: cpojer
fbshipit-source-id: d58a3c30dfe0887f8a530e3393af4af5a1ec1cac
Summary: Adding flow types for DeviceInfo module and migrating our codebase over to using `DeviceInfo.getConstants()`
Reviewed By: fkgozali
Differential Revision: D14645744
fbshipit-source-id: e30a060c6dc92938cd1420ba11a1d837c79d1e32
Summary: Rick manually created view config in JS for View; adding some missing attributes/events and using this instead of `requireNativeComponent`
Reviewed By: rickhanlonii
Differential Revision: D15488008
fbshipit-source-id: 48e925ec0ca2aeba9e6cc66edef0b70ee1c94d27
Summary:
This is another step in moving RN towards standard path-based requires, updating more code to use path-based requires. See the umbrella issue at https://github.com/facebook/react-native/issues/24316 for more detail.
## Changelog
[General] [Changed] - Replace more Haste imports with path-based imports
Pull Request resolved: https://github.com/facebook/react-native/pull/25001
Differential Revision: D15467829
Pulled By: cpojer
fbshipit-source-id: 58c364bb4c1c757689907d5ed0d0f3fac0e22f3f
Summary: Fixes a flow failure in the generated output and adds trailing commas to pass linting
Reviewed By: yungsters
Differential Revision: D15354725
fbshipit-source-id: 1eac27fa753af595a9a2787426b147e5f49a4e1d
