revert: "feat(browser): Add interactionsSampleRate to browserTracingIntegration options (#12023)" (#12048)

The reason for the revert is that we're concerned about 1. the usefulness and 2. the
name of this option and would like to revisit this without blocking the
8.1.0 release. This is not semver-breaking because in 8.0.0, this API
did not exist.

Author: Lms24

packages/browser-utils/src/metrics/inp.ts

@@ -17,10 +17,10 @@ import { getBrowserPerformanceAPI, msToSec } from './utils';
 /**
  * Start tracking INP webvital events.
  */
-export function startTrackingINP(interactionsSampleRate: number): () => void {
+export function startTrackingINP(): () => void {
   const performance = getBrowserPerformanceAPI();
   if (performance && browserPerformanceTimeOrigin) {
-    const inpCallback = _trackINP(interactionsSampleRate);
+    const inpCallback = _trackINP();
 
     return (): void => {
       inpCallback();
@@ -60,16 +60,8 @@ const INP_ENTRY_MAP: Record<string, 'click' | 'hover' | 'drag' | 'press'> = {
 };
 
 /** Starts tracking the Interaction to Next Paint on the current page. */
-function _trackINP(interactionsSampleRate: number): () => void {
+function _trackINP(): () => void {
   return addInpInstrumentationHandler(({ metric }) => {
-    // As specified in the `interactionsSampleRate` option, the sampling decision shall be based on
-    // `tracesSampleRate` x `interactionsSampleRate`
-    // This is the same as sampling here first on `interactionsSampleRate` and later again on `tracesSampleRate`
-    // (which is done in `startInactiveSpan`). Doing it this way is easier and more bundle-size efficient.
-    if (Math.random() > interactionsSampleRate) {
-      return;
-    }
-
     const client = getClient();
     if (!client || metric.value == undefined) {
       return;

packages/browser/src/tracing/browserTracingIntegration.ts

@@ -103,17 +103,6 @@ export interface BrowserTracingOptions {
    */
   enableInp: boolean;
 
-  /**
-   * Sample rate to determine interaction (INP) span sampling.
-   *
-   * The `interactionsSampleRate` is applied on top of the global `tracesSampleRate`.
-   * For example, a tracesSampleRate of 0.1 and interactionsSampleRate of 0.5 will result in a 0.05 sample rate
-   * for interactions.
-   *
-   * Default: 1
-   */
-  interactionsSampleRate: number;
-
   /**
    * Flag to disable patching all together for fetch requests.
    *
@@ -166,7 +155,6 @@ const DEFAULT_BROWSER_TRACING_OPTIONS: BrowserTracingOptions = {
   markBackgroundSpan: true,
   enableLongTask: true,
   enableInp: true,
-  interactionsSampleRate: 1,
   _experiments: {},
   ...defaultRequestInstrumentationOptions,
 };
@@ -185,7 +173,6 @@ export const browserTracingIntegration = ((_options: Partial<BrowserTracingOptio
 
   const {
     enableInp,
-    interactionsSampleRate,
     enableLongTask,
     _experiments: { enableInteractions },
     beforeStartSpan,
@@ -207,14 +194,7 @@ export const browserTracingIntegration = ((_options: Partial<BrowserTracingOptio
   const _collectWebVitals = startTrackingWebVitals();
 
   if (enableInp) {
-    const isValidInteractionsSampleRate = interactionsSampleRate >= 0 && interactionsSampleRate <= 1;
-    if (isValidInteractionsSampleRate) {
-      DEBUG_BUILD &&
-        logger.warn(
-          `[Tracing] \`interactionsSampleRate\` must be between 0 and 1. Got: ${interactionsSampleRate}. Setting to 100%`,
-        );
-    }
-    startTrackingINP(isValidInteractionsSampleRate ? interactionsSampleRate : 1);
+    startTrackingINP();
   }
 
   if (enableLongTask) {

packages/browser/test/unit/tracing/browserTracingIntegration.test.ts

@@ -36,8 +36,6 @@ import {
 } from '../../../src/tracing/browserTracingIntegration';
 import { getDefaultBrowserClientOptions } from '../helper/browser-client-options';
 
-import * as browserUtils from '@sentry-internal/browser-utils';
-
 // We're setting up JSDom here because the Next.js routing instrumentations requires a few things to be present on pageload:
 // 1. Access to window.document API for `window.document.getElementById`
 // 2. Access to window.location API for `window.location.pathname`
@@ -1000,28 +998,6 @@ describe('browserTracingIntegration', () => {
     });
   });
 
-  describe('INP - interactionsSampleRate', () => {
-    const startTrackingInpSpy = jest.spyOn(browserUtils, 'startTrackingINP');
-
-    it('sets interactionsSampleRate to 1 by default', () => {
-      browserTracingIntegration();
-      expect(startTrackingInpSpy).toHaveBeenCalledWith(1);
-    });
-
-    it.each([0, 0.5, 1])('passes on user-defined interactionsSampleRate', interactionsSampleRate => {
-      browserTracingIntegration({ interactionsSampleRate });
-      expect(startTrackingInpSpy).toHaveBeenCalledWith(interactionsSampleRate);
-    });
-
-    it.each([-1, 1.1, NaN, Infinity])(
-      'falls back to 100% when receiving an invalid interactionsSampleRate',
-      interactionsSampleRate => {
-        browserTracingIntegration({ interactionsSampleRate });
-        expect(startTrackingInpSpy).toHaveBeenCalledWith(1);
-      },
-    );
-  });
-
   // TODO(lforst): I cannot manage to get this test to pass.
   /*
   it('heartbeatInterval can be a custom value', () => {