feat(v8/react): Add a handled prop to ErrorBoundary (#14978)

backport of #14560

---------

Co-authored-by: Henry Huck <henryhuck@hotmail.fr>

Author: Lms24

CHANGELOG.md

@@ -10,6 +10,8 @@
 
 - "You miss 100 percent of the chances you don't take. — Wayne Gretzky" — Michael Scott
 
+Work in this release was contributed by @HHK1. Thank you for your contribution!
+
 ## 8.48.0
 
 ### Deprecations

packages/react/src/errorboundary.tsx

@@ -35,6 +35,12 @@ export type ErrorBoundaryProps = {
    *
    */
   fallback?: React.ReactElement | FallbackRender | undefined;
+  /**
+   * If set to `true` or `false`, the error `handled` property will be set to the given value.
+   * If unset, the default behaviour is to rely on the presence of the `fallback` prop to determine
+   * if the error was handled or not.
+   */
+  handled?: boolean | undefined;
   /** Called when the error boundary encounters an error */
   onError?: ((error: unknown, componentStack: string | undefined, eventId: string) => void) | undefined;
   /** Called on componentDidMount() */
@@ -107,7 +113,8 @@ class ErrorBoundary extends React.Component<ErrorBoundaryProps, ErrorBoundarySta
         beforeCapture(scope, error, passedInComponentStack);
       }
 
-      const eventId = captureReactException(error, errorInfo, { mechanism: { handled: !!this.props.fallback } });
+      const handled = this.props.handled != null ? this.props.handled : !!this.props.fallback;
+      const eventId = captureReactException(error, errorInfo, { mechanism: { handled } });
 
       if (onError) {
         onError(error, passedInComponentStack, eventId);

packages/react/test/errorboundary.test.tsx

@@ -4,7 +4,7 @@ import { fireEvent, render, screen } from '@testing-library/react';
 import * as React from 'react';
 import { useState } from 'react';
 
-import type { ErrorBoundaryProps } from '../src/errorboundary';
+import type { ErrorBoundaryProps, FallbackRender } from '../src/errorboundary';
 import { ErrorBoundary, UNKNOWN_COMPONENT, withErrorBoundary } from '../src/errorboundary';
 
 const mockCaptureException = jest.fn();
@@ -537,47 +537,47 @@ describe('ErrorBoundary', () => {
       expect(mockOnReset).toHaveBeenCalledTimes(1);
       expect(mockOnReset).toHaveBeenCalledWith(expect.any(Error), expect.any(String), expect.any(String));
     });
+    it.each`
+      fallback | handled      | expected
+      ${true}  | ${undefined} | ${true}
+      ${false} | ${undefined} | ${false}
+      ${true}  | ${false}     | ${false}
+      ${true}  | ${true}      | ${true}
+      ${false} | ${true}      | ${true}
+      ${false} | ${false}     | ${false}
+    `(
+      'sets `handled: $expected` when `handled` is $handled and `fallback` is $fallback',
+      async ({
+        fallback,
+        handled,
+        expected,
+      }: {
+        fallback: boolean;
+        handled: boolean | undefined;
+        expected: boolean;
+      }) => {
+        const fallbackComponent: FallbackRender | undefined = fallback
+          ? ({ resetError }) => <button data-testid="reset" onClick={resetError} />
+          : undefined;
+        render(
+          <TestApp handled={handled} fallback={fallbackComponent}>
+            <h1>children</h1>
+          </TestApp>,
+        );
 
-    it('sets `handled: true` when a fallback is provided', async () => {
-      render(
-        <TestApp fallback={({ resetError }) => <button data-testid="reset" onClick={resetError} />}>
-          <h1>children</h1>
-        </TestApp>,
-      );
-
-      expect(mockCaptureException).toHaveBeenCalledTimes(0);
-
-      const btn = screen.getByTestId('errorBtn');
-      fireEvent.click(btn);
-
-      expect(mockCaptureException).toHaveBeenCalledTimes(1);
-      expect(mockCaptureException).toHaveBeenLastCalledWith(expect.any(Object), {
-        captureContext: {
-          contexts: { react: { componentStack: expect.any(String) } },
-        },
-        mechanism: { handled: true },
-      });
-    });
-
-    it('sets `handled: false` when no fallback is provided', async () => {
-      render(
-        <TestApp>
-          <h1>children</h1>
-        </TestApp>,
-      );
-
-      expect(mockCaptureException).toHaveBeenCalledTimes(0);
-
-      const btn = screen.getByTestId('errorBtn');
-      fireEvent.click(btn);
+        expect(mockCaptureException).toHaveBeenCalledTimes(0);
 
-      expect(mockCaptureException).toHaveBeenCalledTimes(1);
-      expect(mockCaptureException).toHaveBeenLastCalledWith(expect.any(Object), {
-        captureContext: {
-          contexts: { react: { componentStack: expect.any(String) } },
-        },
-        mechanism: { handled: false },
-      });
-    });
+        const btn = screen.getByTestId('errorBtn');
+        fireEvent.click(btn);
+
+        expect(mockCaptureException).toHaveBeenCalledTimes(1);
+        expect(mockCaptureException).toHaveBeenLastCalledWith(expect.any(Object), {
+          captureContext: {
+            contexts: { react: { componentStack: expect.any(String) } },
+          },
+          mechanism: { handled: expected },
+        });
+      },
+    );
   });
 });