facebook · sebmarkbage · Apr 1, 2021 · Mar 29, 2021 · Apr 1, 2021 · Apr 1, 2021
diff --git a/packages/react-dom/src/client/ReactDOMComponent.js b/packages/react-dom/src/client/ReactDOMComponent.js
@@ -13,6 +13,7 @@ import {
 } from '../events/EventRegistry';
 
 import {canUseDOM} from 'shared/ExecutionEnvironment';
+import hasOwnProperty from 'shared/hasOwnProperty';
 
 import {
   getValueForAttribute,
@@ -443,7 +444,7 @@ export function createElement(
         !isCustomComponentTag &&
         Object.prototype.toString.call(domElement) ===
           '[object HTMLUnknownElement]' &&
-        !Object.prototype.hasOwnProperty.call(warnedUnknownTags, type)
+        !hasOwnProperty.call(warnedUnknownTags, type)
       ) {
         warnedUnknownTags[type] = true;
         console.error(

diff --git a/packages/react-dom/src/server/ReactDOMServerFormatConfig.js b/packages/react-dom/src/server/ReactDOMServerFormatConfig.js
@@ -44,9 +44,9 @@ import warnValidStyle from '../shared/warnValidStyle';
 import escapeTextForBrowser from './escapeTextForBrowser';
 import hyphenateStyleName from '../shared/hyphenateStyleName';
 import invariant from 'shared/invariant';
+import hasOwnProperty from 'shared/hasOwnProperty';
 import sanitizeURL from '../shared/sanitizeURL';
 
-const hasOwnProperty = Object.prototype.hasOwnProperty;
 const isArray = Array.isArray;
 
 // Per response, global state that is not contextual to the rendering subtree.

diff --git a/packages/react-dom/src/server/ReactPartialRenderer.js b/packages/react-dom/src/server/ReactPartialRenderer.js
@@ -77,6 +77,7 @@ import warnValidStyle from '../shared/warnValidStyle';
 import {validateProperties as validateARIAProperties} from '../shared/ReactDOMInvalidARIAHook';
 import {validateProperties as validateInputProperties} from '../shared/ReactDOMNullInputValuePropHook';
 import {validateProperties as validateUnknownProperties} from '../shared/ReactDOMUnknownPropertyHook';
+import hasOwnProperty from 'shared/hasOwnProperty';
 
 export type ServerOptions = {
   identifierPrefix?: string,
@@ -340,7 +341,6 @@ function flattenOptionChildren(children: mixed): ?string {
   return content;
 }
 
-const hasOwnProperty = Object.prototype.hasOwnProperty;
 const STYLE = 'style';
 const RESERVED_PROPS = {
   children: null,

diff --git a/packages/react-dom/src/shared/DOMProperty.js b/packages/react-dom/src/shared/DOMProperty.js
@@ -8,6 +8,7 @@
  */
 
 import {enableFilterEmptyStringAttributesDOM} from 'shared/ReactFeatureFlags';
+import hasOwnProperty from 'shared/hasOwnProperty';
 
 type PropertyType = 0 | 1 | 2 | 3 | 4 | 5 | 6;
 
@@ -67,7 +68,6 @@ export const VALID_ATTRIBUTE_NAME_REGEX = new RegExp(
   '^[' + ATTRIBUTE_NAME_START_CHAR + '][' + ATTRIBUTE_NAME_CHAR + ']*$',
 );
 
-const hasOwnProperty = Object.prototype.hasOwnProperty;
 const illegalAttributeNameCache = {};
 const validatedAttributeNameCache = {};
 

diff --git a/packages/react-dom/src/shared/ReactDOMInvalidARIAHook.js b/packages/react-dom/src/shared/ReactDOMInvalidARIAHook.js
@@ -8,13 +8,12 @@
 import {ATTRIBUTE_NAME_CHAR} from './DOMProperty';
 import isCustomComponent from './isCustomComponent';
 import validAriaProperties from './validAriaProperties';
+import hasOwnProperty from 'shared/hasOwnProperty';
 
 const warnedProperties = {};
 const rARIA = new RegExp('^(aria)-[' + ATTRIBUTE_NAME_CHAR + ']*$');
 const rARIACamel = new RegExp('^(aria)[A-Z][' + ATTRIBUTE_NAME_CHAR + ']*$');
 
-const hasOwnProperty = Object.prototype.hasOwnProperty;
-
 function validateProperty(tagName, name) {
   if (__DEV__) {
     if (hasOwnProperty.call(warnedProperties, name) && warnedProperties[name]) {

diff --git a/packages/react-dom/src/shared/ReactDOMUnknownPropertyHook.js b/packages/react-dom/src/shared/ReactDOMUnknownPropertyHook.js
@@ -14,12 +14,12 @@ import {
 } from './DOMProperty';
 import isCustomComponent from './isCustomComponent';
 import possibleStandardNames from './possibleStandardNames';
+import hasOwnProperty from 'shared/hasOwnProperty';
 
 let validateProperty = () => {};
 
 if (__DEV__) {
   const warnedProperties = {};
-  const hasOwnProperty = Object.prototype.hasOwnProperty;
   const EVENT_NAME_REGEX = /^on./;
   const INVALID_EVENT_NAME_REGEX = /^on[^A-Z]/;
   const rARIA = new RegExp('^(aria)-[' + ATTRIBUTE_NAME_CHAR + ']*$');

diff --git a/packages/react-server-dom-relay/src/ReactFlightDOMRelayServerHostConfig.js b/packages/react-server-dom-relay/src/ReactFlightDOMRelayServerHostConfig.js
@@ -13,6 +13,8 @@ import type {Request, ReactModel} from 'react-server/src/ReactFlightServer';
 
 import JSResourceReference from 'JSResourceReference';
 
+import hasOwnProperty from 'shared/hasOwnProperty';
+
 export type ModuleReference<T> = JSResourceReference<T>;
 
 import type {
@@ -72,8 +74,6 @@ export function processErrorChunk(
   ];
 }
 
-const hasOwnProperty = Object.prototype.hasOwnProperty;
-
 function convertModelToJSON(
   request: Request,
   parent: {+[key: string]: ReactModel} | $ReadOnlyArray<ReactModel>,

diff --git a/packages/react-server-native-relay/src/ReactFlightNativeRelayServerHostConfig.js b/packages/react-server-native-relay/src/ReactFlightNativeRelayServerHostConfig.js
@@ -10,7 +10,7 @@
 import type {RowEncoding, JSONValue} from './ReactFlightNativeRelayProtocol';
 
 import type {Request, ReactModel} from 'react-server/src/ReactFlightServer';
-
+import hasOwnProperty from 'shared/hasOwnProperty';
 import JSResourceReferenceImpl from 'JSResourceReferenceImpl';
 
 export type ModuleReference<T> = JSResourceReferenceImpl<T>;
@@ -72,8 +72,6 @@ export function processErrorChunk(
   ];
 }
 
-const hasOwnProperty = Object.prototype.hasOwnProperty;
-
 function convertModelToJSON(
   request: Request,
   parent: {+[key: string]: ReactModel} | $ReadOnlyArray<ReactModel>,

diff --git a/packages/react/src/ReactElement.js b/packages/react/src/ReactElement.js
@@ -8,11 +8,10 @@
 import getComponentNameFromType from 'shared/getComponentNameFromType';
 import invariant from 'shared/invariant';
 import {REACT_ELEMENT_TYPE} from 'shared/ReactSymbols';
+import hasOwnProperty from 'shared/hasOwnProperty';
 
 import ReactCurrentOwner from './ReactCurrentOwner';
 
-const hasOwnProperty = Object.prototype.hasOwnProperty;
-
 const RESERVED_PROPS = {
   key: true,
   ref: true,

diff --git a/packages/react/src/ReactElementValidator.js b/packages/react/src/ReactElementValidator.js
@@ -33,6 +33,7 @@ import {
 } from './ReactElement';
 import {setExtraStackFrame} from './ReactDebugCurrentFrame';
 import {describeUnknownElementTypeFrameInDEV} from 'shared/ReactComponentStackFrame';
+import hasOwnProperty from 'shared/hasOwnProperty';
 
 function setCurrentlyValidatingElement(element) {
   if (__DEV__) {
@@ -56,8 +57,6 @@ if (__DEV__) {
   propTypesMisspellWarningShown = false;
 }
 
-const hasOwnProperty = Object.prototype.hasOwnProperty;
-
 function getDeclarationErrorAddendum() {
   if (ReactCurrentOwner.current) {
     const name = getComponentNameFromType(ReactCurrentOwner.current.type);

diff --git a/packages/react/src/jsx/ReactJSXElement.js b/packages/react/src/jsx/ReactJSXElement.js
@@ -7,13 +7,11 @@
 
 import getComponentNameFromType from 'shared/getComponentNameFromType';
 import ReactSharedInternals from 'shared/ReactSharedInternals';
-
+import hasOwnProperty from 'shared/hasOwnProperty';
 import {REACT_ELEMENT_TYPE} from 'shared/ReactSymbols';
 
 const ReactCurrentOwner = ReactSharedInternals.ReactCurrentOwner;
 
-const hasOwnProperty = Object.prototype.hasOwnProperty;
-
 const RESERVED_PROPS = {
   key: true,
   ref: true,

diff --git a/packages/react/src/jsx/ReactJSXElementValidator.js b/packages/react/src/jsx/ReactJSXElementValidator.js
@@ -22,7 +22,7 @@ import {
   REACT_ELEMENT_TYPE,
 } from 'shared/ReactSymbols';
 import {warnAboutSpreadingKeyToJSX} from 'shared/ReactFeatureFlags';
-
+import hasOwnProperty from 'shared/hasOwnProperty';
 import {jsxDEV} from './ReactJSXElement';
 
 import {describeUnknownElementTypeFrameInDEV} from 'shared/ReactComponentStackFrame';
@@ -54,8 +54,6 @@ if (__DEV__) {
   propTypesMisspellWarningShown = false;
 }
 
-const hasOwnProperty = Object.prototype.hasOwnProperty;
-
 /**
  * Verifies the object is a ReactElement.
  * See https://reactjs.org/docs/react-api.html#isvalidelement

diff --git a/packages/shared/checkPropTypes.js b/packages/shared/checkPropTypes.js
@@ -12,6 +12,7 @@ const loggedTypeFailures = {};
 import {describeUnknownElementTypeFrameInDEV} from 'shared/ReactComponentStackFrame';
 
 import ReactSharedInternals from 'shared/ReactSharedInternals';
+import hasOwnProperty from 'shared/hasOwnProperty';
 
 const ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
 
@@ -40,7 +41,7 @@ export default function checkPropTypes(
 ): void {
   if (__DEV__) {
     // $FlowFixMe This is okay but Flow doesn't know it.
-    const has = Function.call.bind(Object.prototype.hasOwnProperty);
+    const has = Function.call.bind(hasOwnProperty);
     for (const typeSpecName in typeSpecs) {
       if (has(typeSpecs, typeSpecName)) {
         let error;

diff --git a/packages/shared/hasOwnProperty.js b/packages/shared/hasOwnProperty.js
@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ */
+
+const hasOwnProperty = Object.prototype.hasOwnProperty;
+
+export default hasOwnProperty;
diff --git a/packages/shared/shallowEqual.js b/packages/shared/shallowEqual.js
@@ -8,8 +8,7 @@
  */
 
 import is from './objectIs';
-
-const hasOwnProperty = Object.prototype.hasOwnProperty;
+import hasOwnProperty from './hasOwnProperty';
 
 /**
  * Performs equality by iterating through keys on an object and returning false