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rubennorterubennorte
authored
Add support for event information in React scheduler tracks in React Native (#35947)
## Summary This defines the same fiber configuration for RN as used in DOM, so we can expose event timing information in the React scheduler tracks in performance traces. This was unblocked by #35913 and #35912. ## How did you test this change? Manually compiled the renderer and tested e2e in FB infra: <img width="1217" height="161" alt="Screenshot 2026-03-03 at 10 10 44" src="https://github.com/user-attachments/assets/6ca1512e-dcaf-49cf-8da9-1c6ae554733a" />
1 parent aac12ce commit 4cc5b7a

1 file changed

Lines changed: 37 additions & 3 deletions

File tree

‎packages/react-native-renderer/src/ReactFiberConfigFabric.js‎

Lines changed: 37 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -422,14 +422,48 @@ export function resolveUpdatePriority(): EventPriority {
422422
returnDefaultEventPriority;
423423
}
424424

425-
exportfunctiontrackSchedulerEvent(): void{}
425+
letschedulerEvent: void|Event=undefined;
426+
exportfunctiontrackSchedulerEvent(): void{
427+
schedulerEvent=global.event;
428+
}
429+
430+
functiongetEventType(event: Event): null|string{
431+
if(event.type){
432+
returnevent.type;
433+
}
434+
435+
// Legacy implementation. RN does not define the `type` property on the event object yet.
436+
// $FlowExpectedError[prop-missing]
437+
constdispatchConfig=event.dispatchConfig;
438+
if(
439+
dispatchConfig==null||
440+
dispatchConfig.phasedRegistrationNames==null
441+
){
442+
returnnull;
443+
}
444+
445+
constrawEventType=
446+
dispatchConfig.phasedRegistrationNames.bubbled||
447+
dispatchConfig.phasedRegistrationNames.captured;
448+
if(!rawEventType){
449+
returnnull;
450+
}
451+
452+
if(rawEventType.startsWith('on')){
453+
returnrawEventType.slice(2).toLowerCase();
454+
}
455+
456+
returnrawEventType.toLowerCase();
457+
}
426458

427459
export functionresolveEventType(): null|string{
428-
returnnull;
460+
constevent=global.event;
461+
returnevent&&event!==schedulerEvent ? getEventType(event) : null;
429462
}
430463

431464
exportfunctionresolveEventTimeStamp(): number{
432-
return-1.1;
465+
constevent=global.event;
466+
returnevent&&event!==schedulerEvent ? event.timeStamp : -1.1;
433467
}
434468

435469
exportfunctionshouldAttemptEagerTransition(): boolean{

0 commit comments

Comments
 (0)
, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
Add support for event information in React scheduler tracks in React … · react/react@4cc5b7a · GitHub
Skip to content
Commit 4cc5b7a
Browse files
rubennorterubennorte
authored
Add support for event information in React scheduler tracks in React Native (#35947)
## Summary
This defines the same fiber configuration for RN as used in DOM, so we
can expose event timing information in the React scheduler tracks in
performance traces.
This was unblocked by #35913 and #35912.
## How did you test this change?
Manually compiled the renderer and tested e2e in FB infra: <img width="1217" height="161" alt="Screenshot 2026-03-03 at 10 10 44"
src="https://github.com/user-attachments/assets/6ca1512e-dcaf-49cf-8da9-1c6ae554733a"
/>
1 parent aac12ce commit 4cc5b7a
1 file changed
Lines changed: 37 additions & 3 deletions
File tree
‎packages/react-native-renderer/src/ReactFiberConfigFabric.js‎
Lines changed: 37 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -422,14 +422,48 @@ export function resolveUpdatePriority(): EventPriority {
422422
returnDefaultEventPriority;
423423
}
424424

425-
exportfunctiontrackSchedulerEvent(): void{}
425+
letschedulerEvent: void|Event=undefined;
426+
exportfunctiontrackSchedulerEvent(): void{
427+
schedulerEvent=global.event;
428+
}
429+
430+
functiongetEventType(event: Event): null|string{
431+
if(event.type){
432+
returnevent.type;
433+
}
434+
435+
// Legacy implementation. RN does not define the `type` property on the event object yet.
436+
// $FlowExpectedError[prop-missing]
437+
constdispatchConfig=event.dispatchConfig;
438+
if(
439+
dispatchConfig==null||
440+
dispatchConfig.phasedRegistrationNames==null
441+
){
442+
returnnull;
443+
}
444+
445+
constrawEventType=
446+
dispatchConfig.phasedRegistrationNames.bubbled||
447+
dispatchConfig.phasedRegistrationNames.captured;
448+
if(!rawEventType){
449+
returnnull;
450+
}
451+
452+
if(rawEventType.startsWith('on')){
453+
returnrawEventType.slice(2).toLowerCase();
454+
}
455+
456+
returnrawEventType.toLowerCase();
457+
}
426458

427459
export functionresolveEventType(): null|string{
428-
returnnull;
460+
constevent=global.event;
461+
returnevent&&event!==schedulerEvent ? getEventType(event) : null;
429462
}
430463

431464
exportfunctionresolveEventTimeStamp(): number{
432-
return-1.1;
465+
constevent=global.event;
466+
returnevent&&event!==schedulerEvent ? event.timeStamp : -1.1;
433467
}
434468

435469
exportfunctionshouldAttemptEagerTransition(): boolean{
0 commit comments
Comments
 (0)

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Add support for event information in React scheduler tracks in React … · react/react@4cc5b7a · GitHub
Skip to content
Commit 4cc5b7a
Browse files
rubennorterubennorte
authored
Add support for event information in React scheduler tracks in React Native (#35947)
## Summary
This defines the same fiber configuration for RN as used in DOM, so we
can expose event timing information in the React scheduler tracks in
performance traces.
This was unblocked by #35913 and #35912.
## How did you test this change?
Manually compiled the renderer and tested e2e in FB infra: <img width="1217" height="161" alt="Screenshot 2026-03-03 at 10 10 44"
src="https://github.com/user-attachments/assets/6ca1512e-dcaf-49cf-8da9-1c6ae554733a"
/>
1 parent aac12ce commit 4cc5b7a
1 file changed
Lines changed: 37 additions & 3 deletions
File tree
‎packages/react-native-renderer/src/ReactFiberConfigFabric.js‎
Lines changed: 37 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -422,14 +422,48 @@ export function resolveUpdatePriority(): EventPriority {
422422
returnDefaultEventPriority;
423423
}
424424

425-
exportfunctiontrackSchedulerEvent(): void{}
425+
letschedulerEvent: void|Event=undefined;
426+
exportfunctiontrackSchedulerEvent(): void{
427+
schedulerEvent=global.event;
428+
}
429+
430+
functiongetEventType(event: Event): null|string{
431+
if(event.type){
432+
returnevent.type;
433+
}
434+
435+
// Legacy implementation. RN does not define the `type` property on the event object yet.
436+
// $FlowExpectedError[prop-missing]
437+
constdispatchConfig=event.dispatchConfig;
438+
if(
439+
dispatchConfig==null||
440+
dispatchConfig.phasedRegistrationNames==null
441+
){
442+
returnnull;
443+
}
444+
445+
constrawEventType=
446+
dispatchConfig.phasedRegistrationNames.bubbled||
447+
dispatchConfig.phasedRegistrationNames.captured;
448+
if(!rawEventType){
449+
returnnull;
450+
}
451+
452+
if(rawEventType.startsWith('on')){
453+
returnrawEventType.slice(2).toLowerCase();
454+
}
455+
456+
returnrawEventType.toLowerCase();
457+
}
426458

427459
export functionresolveEventType(): null|string{
428-
returnnull;
460+
constevent=global.event;
461+
returnevent&&event!==schedulerEvent ? getEventType(event) : null;
429462
}
430463

431464
exportfunctionresolveEventTimeStamp(): number{
432-
return-1.1;
465+
constevent=global.event;
466+
returnevent&&event!==schedulerEvent ? event.timeStamp : -1.1;
433467
}
434468

435469
exportfunctionshouldAttemptEagerTransition(): boolean{
0 commit comments
Comments
 (0)

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Add support for event information in React scheduler tracks in React … · react/react@4cc5b7a · GitHub
Skip to content
Commit 4cc5b7a
Browse files
rubennorterubennorte
authored
Add support for event information in React scheduler tracks in React Native (#35947)
## Summary
This defines the same fiber configuration for RN as used in DOM, so we
can expose event timing information in the React scheduler tracks in
performance traces.
This was unblocked by #35913 and #35912.
## How did you test this change?
Manually compiled the renderer and tested e2e in FB infra: <img width="1217" height="161" alt="Screenshot 2026-03-03 at 10 10 44"
src="https://github.com/user-attachments/assets/6ca1512e-dcaf-49cf-8da9-1c6ae554733a"
/>
1 parent aac12ce commit 4cc5b7a
1 file changed
Lines changed: 37 additions & 3 deletions
File tree
‎packages/react-native-renderer/src/ReactFiberConfigFabric.js‎
Lines changed: 37 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -422,14 +422,48 @@ export function resolveUpdatePriority(): EventPriority {
422422
returnDefaultEventPriority;
423423
}
424424

425-
exportfunctiontrackSchedulerEvent(): void{}
425+
letschedulerEvent: void|Event=undefined;
426+
exportfunctiontrackSchedulerEvent(): void{
427+
schedulerEvent=global.event;
428+
}
429+
430+
functiongetEventType(event: Event): null|string{
431+
if(event.type){
432+
returnevent.type;
433+
}
434+
435+
// Legacy implementation. RN does not define the `type` property on the event object yet.
436+
// $FlowExpectedError[prop-missing]
437+
constdispatchConfig=event.dispatchConfig;
438+
if(
439+
dispatchConfig==null||
440+
dispatchConfig.phasedRegistrationNames==null
441+
){
442+
returnnull;
443+
}
444+
445+
constrawEventType=
446+
dispatchConfig.phasedRegistrationNames.bubbled||
447+
dispatchConfig.phasedRegistrationNames.captured;
448+
if(!rawEventType){
449+
returnnull;
450+
}
451+
452+
if(rawEventType.startsWith('on')){
453+
returnrawEventType.slice(2).toLowerCase();
454+
}
455+
456+
returnrawEventType.toLowerCase();
457+
}
426458

427459
export functionresolveEventType(): null|string{
428-
returnnull;
460+
constevent=global.event;
461+
returnevent&&event!==schedulerEvent ? getEventType(event) : null;
429462
}
430463

431464
exportfunctionresolveEventTimeStamp(): number{
432-
return-1.1;
465+
constevent=global.event;
466+
returnevent&&event!==schedulerEvent ? event.timeStamp : -1.1;
433467
}
434468

435469
exportfunctionshouldAttemptEagerTransition(): boolean{
0 commit comments
Comments
 (0)

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
Add support for event information in React scheduler tracks in React … · react/react@4cc5b7a · GitHub
Skip to content
Commit 4cc5b7a
Browse files
rubennorterubennorte
authored
Add support for event information in React scheduler tracks in React Native (#35947)
## Summary
This defines the same fiber configuration for RN as used in DOM, so we
can expose event timing information in the React scheduler tracks in
performance traces.
This was unblocked by #35913 and #35912.
## How did you test this change?
Manually compiled the renderer and tested e2e in FB infra: <img width="1217" height="161" alt="Screenshot 2026-03-03 at 10 10 44"
src="https://github.com/user-attachments/assets/6ca1512e-dcaf-49cf-8da9-1c6ae554733a"
/>
1 parent aac12ce commit 4cc5b7a
1 file changed
Lines changed: 37 additions & 3 deletions
File tree
‎packages/react-native-renderer/src/ReactFiberConfigFabric.js‎
Lines changed: 37 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -422,14 +422,48 @@ export function resolveUpdatePriority(): EventPriority {
422422
returnDefaultEventPriority;
423423
}
424424

425-
exportfunctiontrackSchedulerEvent(): void{}
425+
letschedulerEvent: void|Event=undefined;
426+
exportfunctiontrackSchedulerEvent(): void{
427+
schedulerEvent=global.event;
428+
}
429+
430+
functiongetEventType(event: Event): null|string{
431+
if(event.type){
432+
returnevent.type;
433+
}
434+
435+
// Legacy implementation. RN does not define the `type` property on the event object yet.
436+
// $FlowExpectedError[prop-missing]
437+
constdispatchConfig=event.dispatchConfig;
438+
if(
439+
dispatchConfig==null||
440+
dispatchConfig.phasedRegistrationNames==null
441+
){
442+
returnnull;
443+
}
444+
445+
constrawEventType=
446+
dispatchConfig.phasedRegistrationNames.bubbled||
447+
dispatchConfig.phasedRegistrationNames.captured;
448+
if(!rawEventType){
449+
returnnull;
450+
}
451+
452+
if(rawEventType.startsWith('on')){
453+
returnrawEventType.slice(2).toLowerCase();
454+
}
455+
456+
returnrawEventType.toLowerCase();
457+
}
426458

427459
export functionresolveEventType(): null|string{
428-
returnnull;
460+
constevent=global.event;
461+
returnevent&&event!==schedulerEvent ? getEventType(event) : null;
429462
}
430463

431464
exportfunctionresolveEventTimeStamp(): number{
432-
return-1.1;
465+
constevent=global.event;
466+
returnevent&&event!==schedulerEvent ? event.timeStamp : -1.1;
433467
}
434468

435469
exportfunctionshouldAttemptEagerTransition(): boolean{
0 commit comments
Comments
 (0)

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Add support for event information in React scheduler tracks in React … · react/react@4cc5b7a · GitHub
Skip to content
Commit 4cc5b7a
Browse files
rubennorterubennorte
authored
Add support for event information in React scheduler tracks in React Native (#35947)
## Summary
This defines the same fiber configuration for RN as used in DOM, so we
can expose event timing information in the React scheduler tracks in
performance traces.
This was unblocked by #35913 and #35912.
## How did you test this change?
Manually compiled the renderer and tested e2e in FB infra: <img width="1217" height="161" alt="Screenshot 2026-03-03 at 10 10 44"
src="https://github.com/user-attachments/assets/6ca1512e-dcaf-49cf-8da9-1c6ae554733a"
/>
1 parent aac12ce commit 4cc5b7a
1 file changed
Lines changed: 37 additions & 3 deletions
File tree
‎packages/react-native-renderer/src/ReactFiberConfigFabric.js‎
Lines changed: 37 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -422,14 +422,48 @@ export function resolveUpdatePriority(): EventPriority {
422422
returnDefaultEventPriority;
423423
}
424424

425-
exportfunctiontrackSchedulerEvent(): void{}
425+
letschedulerEvent: void|Event=undefined;
426+
exportfunctiontrackSchedulerEvent(): void{
427+
schedulerEvent=global.event;
428+
}
429+
430+
functiongetEventType(event: Event): null|string{
431+
if(event.type){
432+
returnevent.type;
433+
}
434+
435+
// Legacy implementation. RN does not define the `type` property on the event object yet.
436+
// $FlowExpectedError[prop-missing]
437+
constdispatchConfig=event.dispatchConfig;
438+
if(
439+
dispatchConfig==null||
440+
dispatchConfig.phasedRegistrationNames==null
441+
){
442+
returnnull;
443+
}
444+
445+
constrawEventType=
446+
dispatchConfig.phasedRegistrationNames.bubbled||
447+
dispatchConfig.phasedRegistrationNames.captured;
448+
if(!rawEventType){
449+
returnnull;
450+
}
451+
452+
if(rawEventType.startsWith('on')){
453+
returnrawEventType.slice(2).toLowerCase();
454+
}
455+
456+
returnrawEventType.toLowerCase();
457+
}
426458

427459
export functionresolveEventType(): null|string{
428-
returnnull;
460+
constevent=global.event;
461+
returnevent&&event!==schedulerEvent ? getEventType(event) : null;
429462
}
430463

431464
exportfunctionresolveEventTimeStamp(): number{
432-
return-1.1;
465+
constevent=global.event;
466+
returnevent&&event!==schedulerEvent ? event.timeStamp : -1.1;
433467
}
434468

435469
exportfunctionshouldAttemptEagerTransition(): boolean{
0 commit comments
Comments
 (0)

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Add support for event information in React scheduler tracks in React … · react/react@4cc5b7a · GitHub
Skip to content
Commit 4cc5b7a
Browse files
rubennorterubennorte
authored
Add support for event information in React scheduler tracks in React Native (#35947)
## Summary
This defines the same fiber configuration for RN as used in DOM, so we
can expose event timing information in the React scheduler tracks in
performance traces.
This was unblocked by #35913 and #35912.
## How did you test this change?
Manually compiled the renderer and tested e2e in FB infra: <img width="1217" height="161" alt="Screenshot 2026-03-03 at 10 10 44"
src="https://github.com/user-attachments/assets/6ca1512e-dcaf-49cf-8da9-1c6ae554733a"
/>
1 parent aac12ce commit 4cc5b7a
1 file changed
Lines changed: 37 additions & 3 deletions
File tree
‎packages/react-native-renderer/src/ReactFiberConfigFabric.js‎
Lines changed: 37 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -422,14 +422,48 @@ export function resolveUpdatePriority(): EventPriority {
422422
returnDefaultEventPriority;
423423
}
424424

425-
exportfunctiontrackSchedulerEvent(): void{}
425+
letschedulerEvent: void|Event=undefined;
426+
exportfunctiontrackSchedulerEvent(): void{
427+
schedulerEvent=global.event;
428+
}
429+
430+
functiongetEventType(event: Event): null|string{
431+
if(event.type){
432+
returnevent.type;
433+
}
434+
435+
// Legacy implementation. RN does not define the `type` property on the event object yet.
436+
// $FlowExpectedError[prop-missing]
437+
constdispatchConfig=event.dispatchConfig;
438+
if(
439+
dispatchConfig==null||
440+
dispatchConfig.phasedRegistrationNames==null
441+
){
442+
returnnull;
443+
}
444+
445+
constrawEventType=
446+
dispatchConfig.phasedRegistrationNames.bubbled||
447+
dispatchConfig.phasedRegistrationNames.captured;
448+
if(!rawEventType){
449+
returnnull;
450+
}
451+
452+
if(rawEventType.startsWith('on')){
453+
returnrawEventType.slice(2).toLowerCase();
454+
}
455+
456+
returnrawEventType.toLowerCase();
457+
}
426458

427459
export functionresolveEventType(): null|string{
428-
returnnull;
460+
constevent=global.event;
461+
returnevent&&event!==schedulerEvent ? getEventType(event) : null;
429462
}
430463

431464
exportfunctionresolveEventTimeStamp(): number{
432-
return-1.1;
465+
constevent=global.event;
466+
returnevent&&event!==schedulerEvent ? event.timeStamp : -1.1;
433467
}
434468

435469
exportfunctionshouldAttemptEagerTransition(): boolean{
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Comments
 (0)

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
Add support for event information in React scheduler tracks in React … · react/react@4cc5b7a · GitHub
Skip to content
Commit 4cc5b7a
Browse files
rubennorterubennorte
authored
Add support for event information in React scheduler tracks in React Native (#35947)
## Summary
This defines the same fiber configuration for RN as used in DOM, so we
can expose event timing information in the React scheduler tracks in
performance traces.
This was unblocked by #35913 and #35912.
## How did you test this change?
Manually compiled the renderer and tested e2e in FB infra: <img width="1217" height="161" alt="Screenshot 2026-03-03 at 10 10 44"
src="https://github.com/user-attachments/assets/6ca1512e-dcaf-49cf-8da9-1c6ae554733a"
/>
1 parent aac12ce commit 4cc5b7a
1 file changed
Lines changed: 37 additions & 3 deletions
File tree
‎packages/react-native-renderer/src/ReactFiberConfigFabric.js‎
Lines changed: 37 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -422,14 +422,48 @@ export function resolveUpdatePriority(): EventPriority {
422422
returnDefaultEventPriority;
423423
}
424424

425-
exportfunctiontrackSchedulerEvent(): void{}
425+
letschedulerEvent: void|Event=undefined;
426+
exportfunctiontrackSchedulerEvent(): void{
427+
schedulerEvent=global.event;
428+
}
429+
430+
functiongetEventType(event: Event): null|string{
431+
if(event.type){
432+
returnevent.type;
433+
}
434+
435+
// Legacy implementation. RN does not define the `type` property on the event object yet.
436+
// $FlowExpectedError[prop-missing]
437+
constdispatchConfig=event.dispatchConfig;
438+
if(
439+
dispatchConfig==null||
440+
dispatchConfig.phasedRegistrationNames==null
441+
){
442+
returnnull;
443+
}
444+
445+
constrawEventType=
446+
dispatchConfig.phasedRegistrationNames.bubbled||
447+
dispatchConfig.phasedRegistrationNames.captured;
448+
if(!rawEventType){
449+
returnnull;
450+
}
451+
452+
if(rawEventType.startsWith('on')){
453+
returnrawEventType.slice(2).toLowerCase();
454+
}
455+
456+
returnrawEventType.toLowerCase();
457+
}
426458

427459
export functionresolveEventType(): null|string{
428-
returnnull;
460+
constevent=global.event;
461+
returnevent&&event!==schedulerEvent ? getEventType(event) : null;
429462
}
430463

431464
exportfunctionresolveEventTimeStamp(): number{
432-
return-1.1;
465+
constevent=global.event;
466+
returnevent&&event!==schedulerEvent ? event.timeStamp : -1.1;
433467
}
434468

435469
exportfunctionshouldAttemptEagerTransition(): boolean{
0 commit comments
Comments
 (0)