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Eagerly initialize an mutable object for instance.refs #25696

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merged 1 commit into from
Nov 16, 2022
Merged

Eagerly initialize an mutable object for instance.refs #25696

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7 changes: 1 addition & 6 deletions packages/react-reconciler/src/ReactChildFiber.new.js
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Original file line number Diff line number Diff line change
Expand Up @@ -39,7 +39,6 @@ import {
createFiberFromText,
createFiberFromPortal,
} from './ReactFiber.new';
import {emptyRefsObject} from './ReactFiberClassComponent.new';
import {isCompatibleFamilyForHotReloading} from './ReactFiberHotReloading.new';
import {StrictLegacyMode} from './ReactTypeOfMode';
import {getIsHydrating} from './ReactFiberHydrationContext.new';
Expand Down Expand Up @@ -192,11 +191,7 @@ function coerceRef(
return current.ref;
}
const ref = function(value) {
let refs = resolvedInst.refs;
if (refs === emptyRefsObject) {
// This is a lazy pooled frozen object, so we need to initialize.
refs = resolvedInst.refs = {};
}
const refs = resolvedInst.refs;
if (value === null) {
delete refs[stringRef];
} else {
Expand Down
7 changes: 1 addition & 6 deletions packages/react-reconciler/src/ReactChildFiber.old.js
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Original file line number Diff line number Diff line change
Expand Up @@ -39,7 +39,6 @@ import {
createFiberFromText,
createFiberFromPortal,
} from './ReactFiber.old';
import {emptyRefsObject} from './ReactFiberClassComponent.old';
import {isCompatibleFamilyForHotReloading} from './ReactFiberHotReloading.old';
import {StrictLegacyMode} from './ReactTypeOfMode';
import {getIsHydrating} from './ReactFiberHydrationContext.old';
Expand Down Expand Up @@ -192,11 +191,7 @@ function coerceRef(
return current.ref;
}
const ref = function(value) {
let refs = resolvedInst.refs;
if (refs === emptyRefsObject) {
// This is a lazy pooled frozen object, so we need to initialize.
refs = resolvedInst.refs = {};
}
const refs = resolvedInst.refs;
if (value === null) {
delete refs[stringRef];
} else {
Expand Down
9 changes: 1 addition & 8 deletions packages/react-reconciler/src/ReactFiberClassComponent.new.js
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,6 @@ import type {Lanes} from './ReactFiberLane.new';
import type {UpdateQueue} from './ReactFiberClassUpdateQueue.new';
import type {Flags} from './ReactFiberFlags';

import * as React from 'react';
import {
LayoutStatic,
Update,
Expand Down Expand Up @@ -80,12 +79,6 @@ import {

const fakeInternalInstance = {};

// React.Component uses a shared frozen object by default.
// We'll use it to determine whether we need to initialize legacy refs.
export const emptyRefsObject: $FlowFixMe = React.Component
? new React.Component().refs
: {};

let didWarnAboutStateAssignmentForComponent;
let didWarnAboutUninitializedState;
let didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate;
Expand Down Expand Up @@ -836,7 +829,7 @@ function mountClassInstance(
const instance = workInProgress.stateNode;
instance.props = newProps;
instance.state = workInProgress.memoizedState;
instance.refs = emptyRefsObject;
instance.refs = {};

initializeUpdateQueue(workInProgress);

Expand Down
9 changes: 1 addition & 8 deletions packages/react-reconciler/src/ReactFiberClassComponent.old.js
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,6 @@ import type {Lanes} from './ReactFiberLane.old';
import type {UpdateQueue} from './ReactFiberClassUpdateQueue.old';
import type {Flags} from './ReactFiberFlags';

import * as React from 'react';
import {
LayoutStatic,
Update,
Expand Down Expand Up @@ -80,12 +79,6 @@ import {

const fakeInternalInstance = {};

// React.Component uses a shared frozen object by default.
// We'll use it to determine whether we need to initialize legacy refs.
export const emptyRefsObject: $FlowFixMe = React.Component
? new React.Component().refs
: {};

let didWarnAboutStateAssignmentForComponent;
let didWarnAboutUninitializedState;
let didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate;
Expand Down Expand Up @@ -836,7 +829,7 @@ function mountClassInstance(
const instance = workInProgress.stateNode;
instance.props = newProps;
instance.state = workInProgress.memoizedState;
instance.refs = emptyRefsObject;
instance.refs = {};

initializeUpdateQueue(workInProgress);

Expand Down