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Brian Vaughn
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Double Invoke Effects in __DEV__ (in old reconciler fork) (#20415)
We originally added a new DEV behavior of double-invoking effects during mount to our new reconciler fork in PRs #19523 and #19935 and later refined it to only affect modern roots in PR #20028. This PR adds that behavior to the old reconciler fork with a small twist– the behavior applies to StrictMode subtrees, regardless of the root type. This commit also adds a few additional tests that weren't in the original commits.
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-50
lines changed

7 files changed

+1099
-50
lines changed

‎packages/react-reconciler/src/ReactFiberClassComponent.old.js‎

Lines changed: 39 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -12,13 +12,14 @@ import type {Lanes} from './ReactFiberLane.old';
1212
import type {UpdateQueue} from './ReactUpdateQueue.old';
1313

1414
import * as React from 'react';
15-
import {Update, Snapshot} from './ReactFiberFlags';
15+
import {Update, Snapshot, MountLayoutDev} from './ReactFiberFlags';
1616
import {
1717
debugRenderPhaseSideEffectsForStrictMode,
1818
disableLegacyContext,
1919
enableDebugTracing,
2020
enableSchedulingProfiler,
2121
warnAboutDeprecatedLifecycles,
22+
enableDoubleInvokingEffects,
2223
} from 'shared/ReactFeatureFlags';
2324
import ReactStrictModeWarnings from './ReactStrictModeWarnings.old';
2425
import {isMounted} from './ReactFiberTreeReflection';
@@ -29,7 +30,7 @@ import invariant from 'shared/invariant';
2930
import {REACT_CONTEXT_TYPE, REACT_PROVIDER_TYPE} from 'shared/ReactSymbols';
3031

3132
import {resolveDefaultProps} from './ReactFiberLazyComponent.old';
32-
import {DebugTracingMode, StrictMode} from './ReactTypeOfMode';
33+
import {DebugTracingMode, NoMode, StrictMode} from './ReactTypeOfMode';
3334

3435
import {
3536
enqueueUpdate,
@@ -890,7 +891,15 @@ function mountClassInstance(
890891
}
891892

892893
if (typeof instance.componentDidMount === 'function') {
893-
workInProgress.flags |= Update;
894+
if (
895+
__DEV__ &&
896+
enableDoubleInvokingEffects &&
897+
(workInProgress.mode & StrictMode) !== NoMode
898+
) {
899+
workInProgress.flags |= MountLayoutDev | Update;
900+
} else {
901+
workInProgress.flags |= Update;
902+
}
894903
}
895904
}
896905

@@ -960,7 +969,15 @@ function resumeMountClassInstance(
960969
// If an update was already in progress, we should schedule an Update
961970
// effect even though we're bailing out, so that cWU/cDU are called.
962971
if (typeof instance.componentDidMount === 'function') {
963-
workInProgress.flags |= Update;
972+
if (
973+
__DEV__ &&
974+
enableDoubleInvokingEffects &&
975+
(workInProgress.mode & StrictMode) !== NoMode
976+
) {
977+
workInProgress.flags |= MountLayoutDev | Update;
978+
} else {
979+
workInProgress.flags |= Update;
980+
}
964981
}
965982
return false;
966983
}
@@ -1003,13 +1020,29 @@ function resumeMountClassInstance(
10031020
}
10041021
}
10051022
if (typeof instance.componentDidMount === 'function') {
1006-
workInProgress.flags |= Update;
1023+
if (
1024+
__DEV__ &&
1025+
enableDoubleInvokingEffects &&
1026+
(workInProgress.mode & StrictMode) !== NoMode
1027+
) {
1028+
workInProgress.flags |= MountLayoutDev | Update;
1029+
} else {
1030+
workInProgress.flags |= Update;
1031+
}
10071032
}
10081033
} else {
10091034
// If an update was already in progress, we should schedule an Update
10101035
// effect even though we're bailing out, so that cWU/cDU are called.
10111036
if (typeof instance.componentDidMount === 'function') {
1012-
workInProgress.flags |= Update;
1037+
if (
1038+
__DEV__ &&
1039+
enableDoubleInvokingEffects &&
1040+
(workInProgress.mode & StrictMode) !== NoMode
1041+
) {
1042+
workInProgress.flags |= MountLayoutDev | Update;
1043+
} else {
1044+
workInProgress.flags |= Update;
1045+
}
10131046
}
10141047

10151048
// If shouldComponentUpdate returned false, we should still update the

‎packages/react-reconciler/src/ReactFiberCommitWork.old.js‎

Lines changed: 115 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -35,6 +35,7 @@ import {
3535
enableFundamentalAPI,
3636
enableSuspenseCallback,
3737
enableScopeAPI,
38+
enableDoubleInvokingEffects,
3839
} from 'shared/ReactFeatureFlags';
3940
import {
4041
FunctionComponent,
@@ -1798,6 +1799,116 @@ function commitResetTextContent(current: Fiber) {
17981799
resetTextContent(current.stateNode);
17991800
}
18001801

1802+
function invokeLayoutEffectMountInDEV(fiber: Fiber): void {
1803+
if (__DEV__ && enableDoubleInvokingEffects) {
1804+
switch (fiber.tag) {
1805+
case FunctionComponent:
1806+
case ForwardRef:
1807+
case SimpleMemoComponent: {
1808+
invokeGuardedCallback(
1809+
null,
1810+
commitHookEffectListMount,
1811+
null,
1812+
HookLayout | HookHasEffect,
1813+
fiber,
1814+
);
1815+
if (hasCaughtError()) {
1816+
const mountError = clearCaughtError();
1817+
captureCommitPhaseError(fiber, mountError);
1818+
}
1819+
break;
1820+
}
1821+
case ClassComponent: {
1822+
const instance = fiber.stateNode;
1823+
invokeGuardedCallback(null, instance.componentDidMount, instance);
1824+
if (hasCaughtError()) {
1825+
const mountError = clearCaughtError();
1826+
captureCommitPhaseError(fiber, mountError);
1827+
}
1828+
break;
1829+
}
1830+
}
1831+
}
1832+
}
1833+
1834+
function invokePassiveEffectMountInDEV(fiber: Fiber): void {
1835+
if (__DEV__ && enableDoubleInvokingEffects) {
1836+
switch (fiber.tag) {
1837+
case FunctionComponent:
1838+
case ForwardRef:
1839+
case SimpleMemoComponent: {
1840+
invokeGuardedCallback(
1841+
null,
1842+
commitHookEffectListMount,
1843+
null,
1844+
HookPassive | HookHasEffect,
1845+
fiber,
1846+
);
1847+
if (hasCaughtError()) {
1848+
const mountError = clearCaughtError();
1849+
captureCommitPhaseError(fiber, mountError);
1850+
}
1851+
break;
1852+
}
1853+
}
1854+
}
1855+
}
1856+
1857+
function invokeLayoutEffectUnmountInDEV(fiber: Fiber): void {
1858+
if (__DEV__ && enableDoubleInvokingEffects) {
1859+
switch (fiber.tag) {
1860+
case FunctionComponent:
1861+
case ForwardRef:
1862+
case SimpleMemoComponent: {
1863+
invokeGuardedCallback(
1864+
null,
1865+
commitHookEffectListUnmount,
1866+
null,
1867+
HookLayout | HookHasEffect,
1868+
fiber,
1869+
fiber.return,
1870+
);
1871+
if (hasCaughtError()) {
1872+
const unmountError = clearCaughtError();
1873+
captureCommitPhaseError(fiber, unmountError);
1874+
}
1875+
break;
1876+
}
1877+
case ClassComponent: {
1878+
const instance = fiber.stateNode;
1879+
if (typeof instance.componentWillUnmount === 'function') {
1880+
safelyCallComponentWillUnmount(fiber, instance);
1881+
}
1882+
break;
1883+
}
1884+
}
1885+
}
1886+
}
1887+
1888+
function invokePassiveEffectUnmountInDEV(fiber: Fiber): void {
1889+
if (__DEV__ && enableDoubleInvokingEffects) {
1890+
switch (fiber.tag) {
1891+
case FunctionComponent:
1892+
case ForwardRef:
1893+
case SimpleMemoComponent: {
1894+
invokeGuardedCallback(
1895+
null,
1896+
commitHookEffectListUnmount,
1897+
null,
1898+
HookPassive | HookHasEffect,
1899+
fiber,
1900+
fiber.return,
1901+
);
1902+
if (hasCaughtError()) {
1903+
const unmountError = clearCaughtError();
1904+
captureCommitPhaseError(fiber, unmountError);
1905+
}
1906+
break;
1907+
}
1908+
}
1909+
}
1910+
}
1911+
18011912
export {
18021913
commitBeforeMutationLifeCycles,
18031914
commitResetTextContent,
@@ -1807,4 +1918,8 @@ export {
18071918
commitLifeCycles,
18081919
commitAttachRef,
18091920
commitDetachRef,
1921+
invokeLayoutEffectMountInDEV,
1922+
invokeLayoutEffectUnmountInDEV,
1923+
invokePassiveEffectMountInDEV,
1924+
invokePassiveEffectUnmountInDEV,
18101925
};

‎packages/react-reconciler/src/ReactFiberHooks.old.js‎

Lines changed: 87 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -28,9 +28,15 @@ import {
2828
enableCache,
2929
decoupleUpdatePriorityFromScheduler,
3030
enableUseRefAccessWarning,
31+
enableDoubleInvokingEffects,
3132
} from 'shared/ReactFeatureFlags';
3233

33-
import {NoMode, BlockingMode, DebugTracingMode} from './ReactTypeOfMode';
34+
import {
35+
NoMode,
36+
BlockingMode,
37+
DebugTracingMode,
38+
StrictMode,
39+
} from './ReactTypeOfMode';
3440
import {
3541
NoLane,
3642
NoLanes,
@@ -49,6 +55,8 @@ import {readContext} from './ReactFiberNewContext.old';
4955
import {
5056
Update as UpdateEffect,
5157
Passive as PassiveEffect,
58+
MountLayoutDev as MountLayoutDevEffect,
59+
MountPassiveDev as MountPassiveDevEffect,
5260
} from './ReactFiberFlags';
5361
import {
5462
HasEffect as HookHasEffect,
@@ -467,7 +475,20 @@ export function bailoutHooks(
467475
lanes: Lanes,
468476
) {
469477
workInProgress.updateQueue = current.updateQueue;
470-
workInProgress.flags &= ~(PassiveEffect | UpdateEffect);
478+
if (
479+
__DEV__ &&
480+
enableDoubleInvokingEffects &&
481+
(workInProgress.mode & StrictMode) !== NoMode
482+
) {
483+
workInProgress.flags &= ~(
484+
MountLayoutDevEffect |
485+
MountPassiveDevEffect |
486+
PassiveEffect |
487+
UpdateEffect
488+
);
489+
} else {
490+
workInProgress.flags &= ~(PassiveEffect | UpdateEffect);
491+
}
471492
current.lanes = removeLanes(current.lanes, lanes);
472493
}
473494

@@ -1303,12 +1324,26 @@ function mountEffect(
13031324
warnIfNotCurrentlyActingEffectsInDEV(currentlyRenderingFiber);
13041325
}
13051326
}
1306-
return mountEffectImpl(
1307-
UpdateEffect | PassiveEffect,
1308-
HookPassive,
1309-
create,
1310-
deps,
1311-
);
1327+
1328+
if (
1329+
__DEV__ &&
1330+
enableDoubleInvokingEffects &&
1331+
(currentlyRenderingFiber.mode & StrictMode) !== NoMode
1332+
) {
1333+
return mountEffectImpl(
1334+
UpdateEffect | PassiveEffect | MountPassiveDevEffect,
1335+
HookPassive,
1336+
create,
1337+
deps,
1338+
);
1339+
} else {
1340+
return mountEffectImpl(
1341+
UpdateEffect | PassiveEffect,
1342+
HookPassive,
1343+
create,
1344+
deps,
1345+
);
1346+
}
13121347
}
13131348

13141349
function updateEffect(
@@ -1333,7 +1368,20 @@ function mountLayoutEffect(
13331368
create: () => (() => void) | void,
13341369
deps: Array<mixed> | void | null,
13351370
): void {
1336-
return mountEffectImpl(UpdateEffect, HookLayout, create, deps);
1371+
if (
1372+
__DEV__ &&
1373+
enableDoubleInvokingEffects &&
1374+
(currentlyRenderingFiber.mode & StrictMode) !== NoMode
1375+
) {
1376+
return mountEffectImpl(
1377+
UpdateEffect | MountLayoutDevEffect,
1378+
HookLayout,
1379+
create,
1380+
deps,
1381+
);
1382+
} else {
1383+
return mountEffectImpl(UpdateEffect, HookLayout, create, deps);
1384+
}
13371385
}
13381386

13391387
function updateLayoutEffect(
@@ -1392,12 +1440,25 @@ function mountImperativeHandle<T>(
13921440
const effectDeps =
13931441
deps !== null && deps !== undefined ? deps.concat([ref]) : null;
13941442

1395-
return mountEffectImpl(
1396-
UpdateEffect,
1397-
HookLayout,
1398-
imperativeHandleEffect.bind(null, create, ref),
1399-
effectDeps,
1400-
);
1443+
if (
1444+
__DEV__ &&
1445+
enableDoubleInvokingEffects &&
1446+
(currentlyRenderingFiber.mode & StrictMode) !== NoMode
1447+
) {
1448+
return mountEffectImpl(
1449+
UpdateEffect | MountLayoutDevEffect,
1450+
HookLayout,
1451+
imperativeHandleEffect.bind(null, create, ref),
1452+
effectDeps,
1453+
);
1454+
} else {
1455+
return mountEffectImpl(
1456+
UpdateEffect,
1457+
HookLayout,
1458+
imperativeHandleEffect.bind(null, create, ref),
1459+
effectDeps,
1460+
);
1461+
}
14011462
}
14021463

14031464
function updateImperativeHandle<T>(
@@ -1678,7 +1739,17 @@ function mountOpaqueIdentifier(): OpaqueIDType | void {
16781739
const setId = mountState(id)[1];
16791740

16801741
if ((currentlyRenderingFiber.mode & BlockingMode) === NoMode) {
1681-
currentlyRenderingFiber.flags |= UpdateEffect | PassiveEffect;
1742+
if (
1743+
__DEV__ &&
1744+
enableDoubleInvokingEffects &&
1745+
(currentlyRenderingFiber.mode & StrictMode) !== NoMode
1746+
) {
1747+
currentlyRenderingFiber.flags |=
1748+
UpdateEffect | PassiveEffect | MountPassiveDevEffect;
1749+
} else {
1750+
currentlyRenderingFiber.flags |= UpdateEffect | PassiveEffect;
1751+
}
1752+
16821753
pushEffect(
16831754
HookHasEffect | HookPassive,
16841755
() => {

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