Adds `.update(newElement)` and `.unmount()` and makes children reorders and composite type swapping work.
Part of #7148.
(cherry picked from commit caec8d5ce7)
Previously, the extract-components script would create the same number of layers of composites as the page it captures, but it would output a new class for each time any composite is used (since we don't want to replicate all the component logic).
I changed the script to output a single type for each type in the input -- and each generated component takes an index for which output it should return. This should be closer to how the original code behaves, especially with respect to VM function call lookups where the amount of polymorphism makes a difference.
I re-recorded the benchmarks with the new scripts. They run significantly faster:
```
Comparing old.txt (control) vs new.txt (test)
Significant differences marked by ***
% change from control to test, with 99% CIs:
* ssr_pe_cold_ms_jsc_jit
% change: -41.73% [-43.37%, -40.09%] ***
means: 39.3191 (control), 22.9127 (test)
* ssr_pe_cold_ms_jsc_nojit
% change: -44.24% [-46.69%, -41.80%] ***
means: 45.8646 (control), 25.5764 (test)
* ssr_pe_cold_ms_node
% change: -45.61% [-47.38%, -43.85%] ***
means: 90.1118 (control), 49.0116 (test)
```
This is probably in part due to the changes here, but also the page I captured has changed somewhat in the meantime and there seem to be slightly fewer components in the hierarchy, so they're not really comparable. But going forward we can use this benchmark which should be more accurate. I also included an identical copy that uses stateless functional components so we can test optimizations to those later.
(cherry picked from commit e5513eceff)
As reported in #7227, unmounting performance regressed with React 15.
It seems that `delete` has become much slower since we started using numeric keys.
Forcing dictionary keys to start with a dot fixes the issue.
(cherry picked from commit 64e7602b3b)
This provides an easy way to indicate that components should only rerender when given new props, like PureRenderMixin. If you rely on mutation in your React components, you can continue to use `React.Component`.
Inheriting from `React.PureComponent` indicates to React that your component doesn't need to rerender when the props are unchanged. We'll compare the old and new props before each render and short-circuit if they're unchanged. It's like an automatic shouldComponentUpdate.
(cherry picked from commit c8fbdac227)
* Warn if PropType function is called in production
* Check if console is undefined before warning
* Randomize value of ReactPropTypesSecret
* Remove dev environment tests
* Rename typeCheckPass to productionWarningCheck
* Rename productionWarningCheck to expectWarningInProduction
* Call toString on Math.random()
* Rename test block for React type checks
* Make sure warning isnt emitted for failing props
* Cache warning by component and prop, warn in dev
* Pass ReactPropTypesSecret to internal checks
* Move tests to ReactPropTypes-test.js
* Update the warning message to include link
* Do not test warning for unions with invalid args
(cherry picked from commit 95ac239cf3)
* Fix for 5468: Validate proptype definitions sooner
Added typeCheckWarn() func and updated the oneOf/oneOfType tests
Added __DEV__ warning for invalid oneOf/OneOfType args
* Suppress redundant error on warn; typeCheckWarn() removed
* Return no-op
* Using emptyFunction module for consistency
* Remove createChainableTypeChecker() call
* Adjust test to assert type check passes when warned
(cherry picked from commit 6cc037bd0d)
This was added to catch internal errors in React but doesn't seem to be doing much good except frustrating people more when their apps throw (#6895, FB-internal t11950821). Until more proper error boundaries land, let's make this a warning.
(cherry picked from commit abcd567325)
Although it is unreasonable to set every possible property for
simulated events, `type` is useful for event handlers that are shared
between types and potentially have different behaviors.
(cherry picked from commit 5a20d449f6)
* Resolve refs in the order of the children
React makes no guarantees about ref resolution order. Unfortunately, some of the internal Facebook component APIs (specifically, layer dialogs) currently depend on the ref resolution order. Specifically, the assumption is that if the layer dialog is placed as a last child, by the time it mounts or updates, the refs to any previously declared elements have been resolved.
With the current `ReactMultiChild`, this is *usually* the case but not always. Both initial mount and an update of all components satisfy this assumption: by the time a child mounts or updates, the previous children’s refs have been resolved. The one scenario where it isn’t true is when **a new child is mounted during an update**.
In this case, the `mountComponent()` call used to be delayed until `ReactMultiChild` processes the queue. However, this is inconsistent with how updates normally work: unlike mounting, updating and unmounting happens inside `ReactChildReconciler.updateChildren()` loop.
This PR changes the `mountComponent()` to be performed inside `ReactChildReconciler`, just like `receiveComponent()` and `unmountComponent()`, and thus ensures that `attachRef()` calls are enqueued in the order the children were processed, so by the time the next child flushes, the refs of the previous children have been resolved.
This is not ideal and will probably be broken by incremental reconciler in the future. However, since we are trying to get rid of mixins in the internal codebase, and layered components are one of the biggest blockers to that, it’s lesser evil to temporarily make ref resolution order more strict until we have time to fix up the layer APIs to not rely on it, and are able to relax it again (which would be a breaking change).
* Use array instead of object to avoid lookups
(cherry picked from commit 83cbc3e5fb)
* Add failing test demonstrating a ReactPerf warning
* Make the failing ReactPerf test more precise
* Make ReactPerf.start() work during reconciliation
* Reorder lifecycle methods for greater clarity
* Fix memory leak
* Error boundaries should not break ReactPerf
* Put onBeginFlush/onEndFlush into transaction wrappers
This looks cleaner even though it is not strictly necessary.
We still call them manually for unmounting because it doesn't have a transaction.
(cherry picked from commit 1a0e3a3215)
* Add failing tests for #7187 and #7190
* Pass shouldHaveDebugID flag to instantiateComponent
This allows us to remove a hack that was added in #6770 and caused #7187 and #7190.
* Move logic for choosing whether to use debugID outside instantiate
(cherry picked from commit d2ff462b79)
The src/core folder moved while this PR was pending so this file
didn't move with it.
Let's get rid of this annoying top level folder.
(cherry picked from commit 4f7a38c3b7)
Touch behavior is inconsistent across different platforms, and ResponderTouchHistoryStore currently fatals when assumptions are broken. In addition, the behavior differs between development and production.
This pull request does a few things to make ResponderTouchHistoryStore easier to deal with:
Adds Flow to keep the TouchEvent, Touch, and TouchRecord types straight.
Changes behavior to be consistent across environments. This means either always throwing or never throwing (and making use of warning and console.error as appropriate).
When an orphaned move or end event is received, print debug information and ignore it instead of crashing and burning.
(cherry picked from commit 2b226f5fa6)
Summary:
I had to cast into any because flow doesn't think that checking the lowercase version of nodeName is a valid way to refine the variable from HTMLElement to HTMLInputElement. I'm also not confident enough in changing the implementation to an instanceof HTMLInputElement to please flow. It also takes care of the null check in the process.
The `nodeName &&` condition wasn't useful since the two branches are checking it against concrete values and actually makes the type different since nodeName is not a boolean per se. I replaced them with if conditions to make it clearer what it actually did instead of doing boolean logic tricks.
It is unclear why I had to type supportedInputTypes, see this internal post for a discussion: https://www.facebook.com/groups/flowtype/permalink/1084168611631753/
The only difference in behavior is that I now explicitely convert to boolean the object dereference via `!!`.
Test Plan:
npm run flow
Careful inspection of the code
Reviewers: @zpao @spicyj
(cherry picked from commit 309215fc40)
* Inline dev-only requires
This reduces the production bundled build size.
* Use new references after resetting module registry in tests
This fixes the tests which were broken due to inlining some requires.
(cherry picked from commit 8fe6b5fb46)
Paul O’Shannessy
Keyan Zhang
Ben Alpert
Kent C. Dodds
Usman
Samy Al Zahrani
Dan Abramov
yiminghe
Brandon Dail
Troy DeMonbreun
Swaroop SM
Evan Jacobs
Jim
Zac Smith
Varayut Lerdkanlayanawat
saiyagg
Andrey Okonetchnikov
Sebastian Markbåge
Marshall Bowers
Timothy Yung
Christopher Chedeau