Hoist PerformanceLogger primitives out of react-native (#56580)

Summary:
Pull Request resolved: #56580

Changelog: [General][Deprecated] Deprecated second argument for hook function passed to `AppRegistry.setComponentProviderInstrumentationHook` as it's not usable by apps. Passed stub that warns when used.

## Context

The performance-logger primitives (`createPerformanceLogger`, `GlobalPerformanceLogger`, `PerformanceLoggerContext`, the `IPerformanceLogger` implementation) and the telemetry they emitted have always been internal — they were never part of the OSS package's public API. Keeping them inside `react-native` is dead weight for external consumers and forces every change to that surface to land through OSS sync.

## Changes

Removes the perf-logger source files and their telemetry emission from `react-native`. The `IPerformanceLogger` interface (the only consumer-visible artifact) is kept in its own `Libraries/ReactNative/IPerformanceLogger.{flow.js,d.ts}` file so embedders can still type their own implementations against it.

Public API surface kept stable:
- `XMLHttpRequest.setPerformanceLogger(...)` is preserved, typed against a thin local `XHRPerformanceLogger` interface (just `startTimespan` / `stopTimespan`). Defaults to `null`; emits no `network_XMLHttpRequest_<friendlyName>` timespan when no logger is set.
- `AppRegistry.setComponentProviderInstrumentationHook(...)` is preserved with its 2-arg signature. The second argument is now a no-op `IPerformanceLogger` stub that emits a one-time `console.warn` flagging it as deprecated — embedders should provide their own per-app context if they need it.

## Impact

Non-breaking for OSS consumers — nothing that was importable from `react-native` becomes unavailable. Telemetry that the package used to emit (`renderApplication_React_render`, `usedReactConcurrentRoot/Fabric/Profiler` extras, `initializeCore_*` markers, the `'GlobalPerformanceLogger'` callable native module) was never wired to anything in the OSS package; embedders that were consuming those signals through their own integration can re-emit them at the call site that registers the surface.

Differential Revision: D102166537

Author: rubennorte

packages/react-native/Libraries/Core/InitializeCore.js

@@ -26,17 +26,4 @@
 
 'use strict';
 
-const start = Date.now();
-
 require('../../src/private/setup/setUpDefaultReactNativeEnvironment').default();
-
-const GlobalPerformanceLogger =
-  require('../Utilities/GlobalPerformanceLogger').default;
-// We could just call GlobalPerformanceLogger.markPoint at the top of the file,
-// but then we'd be excluding the time it took to require the logger.
-// Instead, we just use Date.now and backdate the timestamp.
-GlobalPerformanceLogger.markPoint(
-  'initializeCore_start',
-  GlobalPerformanceLogger.currentTimestamp() - (Date.now() - start),
-);
-GlobalPerformanceLogger.markPoint('initializeCore_end');

packages/react-native/Libraries/Core/setUpBatchedBridge.js

@@ -25,10 +25,6 @@ registerModule(
   'RCTNativeAppEventEmitter',
   () => require('../EventEmitter/RCTNativeAppEventEmitter').default,
 );
-registerModule(
-  'GlobalPerformanceLogger',
-  () => require('../Utilities/GlobalPerformanceLogger').default,
-);
 
 if (__DEV__) {
   registerModule('HMRClient', () => require('../Utilities/HMRClient').default);

packages/react-native/Libraries/Network/XMLHttpRequest.js

@@ -14,7 +14,6 @@ import type {
   EventCallback,
   EventListener,
 } from '../../src/private/webapis/dom/events/EventTarget';
-import type {IPerformanceLogger} from '../Utilities/createPerformanceLogger';
 
 import Event from '../../src/private/webapis/dom/events/Event';
 import {
@@ -27,8 +26,6 @@ import ProgressEvent from '../../src/private/webapis/xhr/events/ProgressEvent';
 import {type EventSubscription} from '../vendor/emitter/EventEmitter';
 
 const BlobManager = require('../Blob/BlobManager').default;
-const GlobalPerformanceLogger =
-  require('../Utilities/GlobalPerformanceLogger').default;
 const RCTNetworking = require('./RCTNetworking').default;
 const base64 = require('base64-js');
 const invariant = require('invariant');
@@ -58,6 +55,17 @@ type XHRInterceptor = interface {
   loadingFailed(id: number, error: string): void,
 };
 
+/**
+ * Minimal contract for the optional performance logger that callers may attach
+ * via `setPerformanceLogger(...)`. Defined locally so this module stays
+ * self-contained and does not depend on any specific logger implementation.
+ * Any object satisfying these two methods structurally is accepted.
+ */
+type XHRPerformanceLogger = interface {
+  startTimespan(key: string): void,
+  stopTimespan(key: string): void,
+};
+
 // The native blob module is optional so inject it here if available.
 if (BlobManager.isAvailable) {
   BlobManager.addNetworkingHandler();
@@ -167,8 +175,7 @@ class XMLHttpRequest extends EventTarget {
   _timedOut: boolean = false;
   _trackingName: ?string;
   _incrementalEvents: boolean = false;
-  _startTime: ?number = null;
-  _performanceLogger: IPerformanceLogger = GlobalPerformanceLogger;
+  _performanceLogger: ?XHRPerformanceLogger = null;
 
   static __setInterceptor_DO_NOT_USE(interceptor: ?XHRInterceptor) {
     XMLHttpRequest._interceptor = interceptor;
@@ -334,8 +341,10 @@ class XMLHttpRequest extends EventTarget {
     responseURL: ?string,
   ): void {
     if (requestId === this._requestId) {
-      this._perfKey != null &&
-        this._performanceLogger.stopTimespan(this._perfKey);
+      const performanceLogger = this._performanceLogger;
+      if (this._perfKey != null && performanceLogger != null) {
+        performanceLogger.stopTimespan(this._perfKey);
+      }
       this.status = status;
       this.setResponseHeaders(responseHeaders);
       this.setReadyState(this.HEADERS_RECEIVED);
@@ -521,9 +530,15 @@ class XMLHttpRequest extends EventTarget {
   }
 
   /**
-   * Custom extension for setting a custom performance logger
+   * Custom extension that lets callers attach a performance logger receiving
+   * a `network_XMLHttpRequest_<friendlyName>` start/stop timespan around each
+   * dispatched request. The logger only needs to implement
+   * `startTimespan(key)` / `stopTimespan(key)` (see the `XHRPerformanceLogger`
+   * interface above). When no logger is set the timespan is not emitted.
    */
-  setPerformanceLogger(performanceLogger: IPerformanceLogger): XMLHttpRequest {
+  setPerformanceLogger(
+    performanceLogger: XHRPerformanceLogger,
+  ): XMLHttpRequest {
     this._performanceLogger = performanceLogger;
     return this;
   }
@@ -598,9 +613,11 @@ class XMLHttpRequest extends EventTarget {
 
     const doSend = () => {
       const friendlyName = this._trackingName ?? this._url;
-      this._perfKey = 'network_XMLHttpRequest_' + String(friendlyName);
-      this._performanceLogger.startTimespan(this._perfKey);
-      this._startTime = performance.now();
+      const performanceLogger = this._performanceLogger;
+      if (performanceLogger != null) {
+        this._perfKey = 'network_XMLHttpRequest_' + String(friendlyName);
+        performanceLogger.startTimespan(this._perfKey);
+      }
       invariant(
         this._method,
         'XMLHttpRequest method needs to be defined (%s).',

packages/react-native/Libraries/Network/__tests__/XMLHttpRequest-test.js

@@ -10,15 +10,10 @@
 
 'use strict';
 
-const createPerformanceLogger =
-  require('../../Utilities/createPerformanceLogger').default;
-const GlobalPerformanceLogger =
-  require('../../Utilities/GlobalPerformanceLogger').default;
 const Platform = require('../../Utilities/Platform').default;
 const XMLHttpRequest = require('../XMLHttpRequest').default;
 
 jest.unmock('../../Utilities/Platform');
-jest.mock('../../Utilities/GlobalPerformanceLogger');
 let requestId = 1;
 function setRequestId(id: number) {
   if (Platform.OS === 'ios') {
@@ -246,30 +241,11 @@ describe('XMLHttpRequest', function () {
     );
   });
 
-  it('should log to GlobalPerformanceLogger if a custom performance logger is not set', () => {
-    xhr.open('GET', 'blabla');
-    xhr.send();
-
-    expect(GlobalPerformanceLogger.startTimespan).toHaveBeenCalledWith(
-      'network_XMLHttpRequest_blabla',
-    );
-    expect(GlobalPerformanceLogger.stopTimespan).not.toHaveBeenCalled();
-
-    setRequestId(8);
-    xhr.__didReceiveResponse(requestId, 200, {
-      'Content-Type': 'text/plain; charset=utf-8',
-      'Content-Length': '32',
-    });
-
-    expect(GlobalPerformanceLogger.stopTimespan).toHaveBeenCalledWith(
-      'network_XMLHttpRequest_blabla',
-    );
-  });
-
   it('should log to a custom performance logger if set', () => {
-    const performanceLogger = createPerformanceLogger();
-    jest.spyOn(performanceLogger, 'startTimespan');
-    jest.spyOn(performanceLogger, 'stopTimespan');
+    const performanceLogger = {
+      startTimespan: jest.fn(),
+      stopTimespan: jest.fn(),
+    };
 
     xhr.setPerformanceLogger(performanceLogger);
 
@@ -279,7 +255,6 @@ describe('XMLHttpRequest', function () {
     expect(performanceLogger.startTimespan).toHaveBeenCalledWith(
       'network_XMLHttpRequest_blabla',
     );
-    expect(GlobalPerformanceLogger.startTimespan).not.toHaveBeenCalled();
     expect(performanceLogger.stopTimespan).not.toHaveBeenCalled();
 
     setRequestId(9);
@@ -291,7 +266,6 @@ describe('XMLHttpRequest', function () {
     expect(performanceLogger.stopTimespan).toHaveBeenCalledWith(
       'network_XMLHttpRequest_blabla',
     );
-    expect(GlobalPerformanceLogger.stopTimespan).not.toHaveBeenCalled();
   });
 
   it('should sort and lowercase response headers', function () {

packages/react-native/Libraries/ReactNative/AppRegistry.d.ts

@@ -8,8 +8,8 @@
  */
 
 import type * as React from 'react';
-import type {IPerformanceLogger} from '../Utilities/IPerformanceLogger';
 import type {ViewStyle} from '../StyleSheet/StyleSheetTypes';
+import type {IPerformanceLogger} from './IPerformanceLogger';
 
 type Task = (taskData: any) => Promise<void>;
 type TaskProvider = () => Task;

packages/react-native/Libraries/ReactNative/AppRegistry.flow.js

@@ -10,8 +10,8 @@
 
 import type {ViewStyleProp} from '../StyleSheet/StyleSheet';
 import type {RootTag} from '../Types/RootTagTypes';
-import type {IPerformanceLogger} from '../Utilities/createPerformanceLogger';
 import type {DisplayModeType} from './DisplayMode';
+import type {IPerformanceLogger} from './IPerformanceLogger.flow';
 
 type HeadlessTask = (taskData: any) => Promise<void>;
 export type TaskProvider = () => HeadlessTask;

packages/react-native/Libraries/ReactNative/AppRegistryImpl.js

@@ -21,8 +21,8 @@ import type {
   TaskProvider,
   WrapperComponentProvider,
 } from './AppRegistry.flow';
+import type {IPerformanceLogger} from './IPerformanceLogger.flow';
 
-import createPerformanceLogger from '../Utilities/createPerformanceLogger';
 import SceneTracker from '../Utilities/SceneTracker';
 import {coerceDisplayMode} from './DisplayMode';
 import HeadlessJsTaskError from './HeadlessJsTaskError';
@@ -31,6 +31,65 @@ import invariant from 'invariant';
 type TaskCanceller = () => void;
 type TaskCancelProvider = () => TaskCanceller;
 
+let didWarnDeprecatedScopedPerformanceLogger: boolean = false;
+function warnDeprecatedScopedPerformanceLogger(): void {
+  if (didWarnDeprecatedScopedPerformanceLogger) {
+    return;
+  }
+  didWarnDeprecatedScopedPerformanceLogger = true;
+  console.warn(
+    'AppRegistry: the `scopedPerformanceLogger` argument passed to ' +
+      '`componentProviderInstrumentationHook` is deprecated and will be ' +
+      'removed in a future release. The instance provided today is a no-op ' +
+      'stub.',
+  );
+}
+
+const DEPRECATED_NOOP_SCOPED_PERFORMANCE_LOGGER: IPerformanceLogger = {
+  addTimespan: () => warnDeprecatedScopedPerformanceLogger(),
+  append: () => warnDeprecatedScopedPerformanceLogger(),
+  clear: () => warnDeprecatedScopedPerformanceLogger(),
+  clearCompleted: () => warnDeprecatedScopedPerformanceLogger(),
+  close: () => warnDeprecatedScopedPerformanceLogger(),
+  currentTimestamp: () => {
+    warnDeprecatedScopedPerformanceLogger();
+    return 0;
+  },
+  getExtras: () => {
+    warnDeprecatedScopedPerformanceLogger();
+    return {};
+  },
+  getPoints: () => {
+    warnDeprecatedScopedPerformanceLogger();
+    return {};
+  },
+  getPointExtras: () => {
+    warnDeprecatedScopedPerformanceLogger();
+    return {};
+  },
+  getTimespans: () => {
+    warnDeprecatedScopedPerformanceLogger();
+    return {};
+  },
+  hasTimespan: () => {
+    warnDeprecatedScopedPerformanceLogger();
+    return false;
+  },
+  isClosed: () => {
+    warnDeprecatedScopedPerformanceLogger();
+    return false;
+  },
+  logEverything: () => warnDeprecatedScopedPerformanceLogger(),
+  markPoint: () => warnDeprecatedScopedPerformanceLogger(),
+  removeExtra: () => {
+    warnDeprecatedScopedPerformanceLogger();
+    return undefined;
+  },
+  setExtra: () => warnDeprecatedScopedPerformanceLogger(),
+  startTimespan: () => warnDeprecatedScopedPerformanceLogger(),
+  stopTimespan: () => warnDeprecatedScopedPerformanceLogger(),
+};
+
 const runnables: Runnables = {};
 const sections: Runnables = {};
 const taskProviders: Map<string, TaskProvider> = new Map();
@@ -81,20 +140,19 @@ export function registerComponent(
   componentProvider: ComponentProvider,
   section?: boolean,
 ): string {
-  const scopedPerformanceLogger = createPerformanceLogger();
   runnables[appKey] = (appParameters, displayMode) => {
     const renderApplication = require('./renderApplication').default;
     renderApplication(
       componentProviderInstrumentationHook(
         componentProvider,
-        scopedPerformanceLogger,
+        DEPRECATED_NOOP_SCOPED_PERFORMANCE_LOGGER,
       ),
       appParameters.initialProps,
       appParameters.rootTag,
       wrapperComponentProvider && wrapperComponentProvider(appParameters),
       rootViewStyleProvider && rootViewStyleProvider(appParameters),
       true, // fabric - deprecated, always true
-      scopedPerformanceLogger,
+      undefined, // formerly scopedPerformanceLogger; reserved positional slot
       appKey === 'LogBox', // is logbox
       appKey,
       displayMode,

…raries/Utilities/IPerformanceLogger.d.ts …ries/ReactNative/IPerformanceLogger.d.tspackages/react-native/Libraries/Utilities/IPerformanceLogger.d.ts renamed to packages/react-native/Libraries/ReactNative/IPerformanceLogger.d.ts packages/react-native/Libraries/Utilities/IPerformanceLogger.d.ts renamed to packages/react-native/Libraries/ReactNative/IPerformanceLogger.d.ts

@@ -7,6 +7,8 @@
  * @format
  */
 
+export type ExtraValue = number | string | boolean;
+export type Extras = {[key: string]: ExtraValue};
 export type Timespan = {
   startTime: number;
   endTime?: number | undefined;
@@ -15,11 +17,12 @@ export type Timespan = {
   endExtras?: Extras | undefined;
 };
 
-// Extra values should be serializable primitives
-export type ExtraValue = number | string | boolean;
-
-export type Extras = {[key: string]: ExtraValue};
-
+/**
+ * @deprecated The scoped performance logger argument passed to the
+ * `componentProviderInstrumentationHook` is no longer used by `react-native`
+ * itself and will be removed in a future release. The instance supplied today
+ * is a no-op stub.
+ */
 export interface IPerformanceLogger {
   addTimespan(
     key: string,

…ibraries/Utilities/IPerformanceLogger.js …s/ReactNative/IPerformanceLogger.flow.jspackages/react-native/Libraries/Utilities/IPerformanceLogger.js renamed to packages/react-native/Libraries/ReactNative/IPerformanceLogger.flow.js packages/react-native/Libraries/Utilities/IPerformanceLogger.js renamed to packages/react-native/Libraries/ReactNative/IPerformanceLogger.flow.js

@@ -8,6 +8,8 @@
  * @format
  */
 
+export type ExtraValue = number | string | boolean;
+export type Extras = {[key: string]: ExtraValue};
 export type Timespan = {
   startTime: number,
   endTime?: number,
@@ -16,11 +18,12 @@ export type Timespan = {
   endExtras?: Extras,
 };
 
-// Extra values should be serializable primitives
-export type ExtraValue = number | string | boolean;
-
-export type Extras = {[key: string]: ExtraValue};
-
+/**
+ * @deprecated The scoped performance logger argument passed to the
+ * `componentProviderInstrumentationHook` is no longer used by `react-native`
+ * itself and will be removed in a future release. The instance supplied today
+ * is a no-op stub.
+ */
 export interface IPerformanceLogger {
   addTimespan(
     key: string,
@@ -34,10 +37,10 @@ export interface IPerformanceLogger {
   clearCompleted(): void;
   close(): void;
   currentTimestamp(): number;
-  getExtras(): Readonly<{[key: string]: ?ExtraValue, ...}>;
-  getPoints(): Readonly<{[key: string]: ?number, ...}>;
-  getPointExtras(): Readonly<{[key: string]: ?Extras, ...}>;
-  getTimespans(): Readonly<{[key: string]: ?Timespan, ...}>;
+  getExtras(): Readonly<{[key: string]: ?ExtraValue}>;
+  getPoints(): Readonly<{[key: string]: ?number}>;
+  getPointExtras(): Readonly<{[key: string]: ?Extras}>;
+  getTimespans(): Readonly<{[key: string]: ?Timespan}>;
   hasTimespan(key: string): boolean;
   isClosed(): boolean;
   logEverything(): void;