* Add options for forked entry points
We currently fork .fb.js entry points. This adds a few more options.
.modern.fb.js - experimental FB builds
.classic.fb.js - stable FB builds
.fb.js - if no other FB build, use this for FB builds
.experimental.js - experimental builds
.stable.js - stable builds
.js - used if no other override exists
This will be used to have different ES exports for different builds.
* Switch React to named exports
* Export named exports from the export point itself
We need to re-export the Flow exported types so we can use them in our code.
We don't want to use the Flow types from upstream since it doesn't have the non-public APIs that we have.
This should be able to use export * but I don't know why it doesn't work.
This actually enables Flow typing of React which was just "any" before.
This exposed some Flow errors that needs fixing.
* Create forks for the react entrypoint
None of our builds expose all exports and they all differ in at least one
way, so we need four forks.
* Set esModule flag to false
We don't want to emit the esModule compatibility flag on our CommonJS
output. For now we treat our named exports as if they're CommonJS.
This is a potentially breaking change for scheduler (but all those apis
are unstable), react-is and use-subscription. However, it seems unlikely
that anyone would rely on this since these only have named exports.
* Remove unused Feature Flags
* Let jest observe the stable fork for stable tests
This lets it do the negative test by ensuring that the right tests fail.
However, this in turn will make other tests that are not behind
__EXPERIMENTAL__ fail. So I need to do that next.
* Put all tests that depend on exports behind __EXPERIMENTAL__
Since there's no way to override the exports using feature flags
in .intern.js anymore we can't use these APIs in stable.
The tradeoff here is that we can either enable the negative tests on
"stable" that means experimental are expected to fail, or we can disable
tests on stable. This is unfortunate since some of these APIs now run on
a "stable" config at FB instead of the experimental.
* Switch ReactDOM to named exports
Same strategy as React.
I moved the ReactDOMFB runtime injection to classic.fb.js
Since we only fork the entrypoint, the `/testing` entrypoint needs to
be forked too to re-export the same things plus `act`. This is a bit
unfortunate. If it becomes a pattern we can consider forking in the
module resolution deeply.
fix flow
* Fix ReactDOM Flow Types
Now that ReactDOM is Flow type checked we need to fix up its types.
* Configure jest to use stable entry for ReactDOM in non-experimental
* Remove additional FeatureFlags that are no longer needed
These are only flagging the exports and no implementation details so we
can control them fully through the export overrides.
Exports from ReactDOM represents React's public API. This include types
exported by React. At some point we'll start building Flow types from
these files.
The duplicate name between DOMContainer and Container seems confusing too
since it was used in the same files even though they're the same.
* import * as React from "react";
This is the correct way to import React from an ES module since the ES
module will not have a default export. Only named exports.
* import * as ReactDOM from "react-dom"
* Build both stable and experimental WWW builds
* Flip already experimental WWW flags to true
* Remove FB-specific internals from modern FB builds
We think we're not going to need these.
* Disable classic features in modern WWW builds
* Disable legacy ReactDOM API for modern WWW build
* Don’t include user timing in prod
* Fix bad copy paste and add missing flags to test renderer
* Add testing WWW feature flag file
We need it because WWW has a different meaning of experimental now.
The mock Scheduler that we use in our tests has its own fake timer
implementation. The `unstable_advanceTime` method advances the timeline.
Currently, a call to `unstable_advanceTime` will also flush any pending
expired work. But that's not how it works in the browser: when a timer
fires, the corresponding task is added to the Scheduler queue. However,
we will still wait until the next message event before flushing it.
This commit changes `unstable_advanceTime` to more closely resemble the
browser behavior, by removing the automatic flushing of expired work.
```js
// Before this commit
Scheduler.unstable_advanceTime(ms);
// Equivalent behavior after this commit
Scheduler.unstable_advanceTime(ms);
Scheduler.unstable_flushExpired();
```
The general principle is to prefer separate APIs for scheduling tasks
and flushing them.
This change does not affect any public APIs. `unstable_advanceTime` is
only used by our own test suite. It is not used by `act`.
However, we may need to update tests in www, like Relay's.
This PR introduces adds `react/testing` and `react-dom/testing`.
- changes infra to generate these builds
- exports act on ReactDOM in these testing builds
- uses the new test builds in fixtures/dom
In the next PR -
- I'll use the new builds for all our own tests
- I'll replace usages of TestUtils.act with ReactDOM.act.
* Simplify Continuous Hydration Targets
Let's use a constant priority for this. This helps us avoid restarting
a render when switching targets and simplifies the model.
The downside is that now we're not down-prioritizing the previous hover
target. However, we think that's ok because it'll only do one level too
much and then stop.
* Add test meant to show why it's tricky to merge both hydration levels
Having both levels co-exist works. However, if we deprioritize hydration
using a single level, we might deprioritize the wrong thing.
This adds a test that catches it if we ever try a naive deprioritization
in the future.
It also tests that we don't down-prioritize if we're changing the hover
in the middle of doing continuous priority work.
* Add test of Event Replaying using Flare
* Fix Event Replaying in Flare by Eagerly Adding Active Listeners
This effectively reverts part of https://github.com/facebook/react/pull/17513
The changes to the test code relate to changes in JSDOM that come with Jest 25:
* Several JSDOM workarounds are no longer needed.
* Several tests made assertions to match incorrect JSDOM behavior (e.g. setAttribute calls) that JSDOM has now patched to match browsers.
* https://codesandbox.io/s/resets-value-of-datetime-input-to-fix-bugs-in-ios-safari-1ppwh
* JSDOM no longer triggers default actions when dispatching click events.
* https://codesandbox.io/s/beautiful-cdn-ugn8f
* JSDOM fixed (jsdom/jsdom#2700) a bug so that calling focus() on an already focused element does not dispatch a FocusEvent.
* JSDOM now supports passive events.
* JSDOM has improved support for custom CSS properties.
* But requires jsdom/cssstyle#112 to land to support webkit prefixed properties.
When owner and self are different for string refs, we can't easily convert them to callback refs. This PR adds a warning for string refs when owner and self are different to tell users to manually update these refs.
* Update Flow to 0.84
* Fix violations
* Use inexact object syntax in files from fbsource
* Fix warning extraction to use a modern parser
* Codemod inexact objects to new syntax
* Tighten types that can be exact
* Revert unintentional formatting changes from codemod
* Remove toString of dangerouslySetInnerHTML
As far as I can tell, the toString call was added here:
https://github.com/facebook/react/commit/00297a5712eb6e9f64d0b4d677b10d9d344fef21#diff-5574f655d491348f422bca600ff6711dR887
It was never really needed. Subsequently when we added Trusted Types,
this needed to be changed to a special call but we really should just
always let it pass through.
* Remove special casing of toString values when enableTrustedTypesIntegration
As far as I can tell, we only toString in user space because of IE8/9.
We don't really support IE8/9 anymore and by the time this flag is on,
we should be able to deprecate it.
Unless this is also an issue in IE11. I haven't tested yet.
* Replace all warning/lowPriWarning with console calls
* Replace console.warn/error with a custom wrapper at build time
* Fail the build for console.error/warn() where we can't read the stack
* prep for codemod
* prep warnings
* rename lint rules
* codemod for ifs
* shim www functions
* Handle more cases in the transform
* Thanks De Morgan
* Run the codemod
* Delete the transform
* Fix up confusing conditions manually
* Fix up www shims to match expected API
* Also check for low-pri warning in the lint rule
* Replace Babel plugin with an ESLint plugin
* Fix ESLint rule violations
* Move shared conditions higher
* Test formatting nits
* Tweak ESLint rule
* Bugfix: inside else branch, 'if' tests are not satisfactory
* Use a stricter check for exactly if (__DEV__)
This makes it easier to see what's going on and matches dominant style in the codebase.
* Fix remaining files after stricter check
