February 2025: Delivered groundwork for Network Inspection Panel in React Native DevTools. Implemented a feature-flagged approach to network inspection (fuseboxNetworkInspectionEnabled) to enable CDP backend inspection and Network.enable handling, and added a host-target metadata flag (networkInspectionEnabled) to report inspection capability to the CDT frontend. As a result, RN apps will be able to expose a Network panel in Chrome DevTools, enabling faster network diagnosis and performance tuning. This work positions RN DevTools for broader tooling integration and improved developer experience.

January 2025 monthly summary: Focused on stabilizing Metro WebSocket connectivity in facebook/react-native. Delivered critical reliability improvements and developer experience optimizations. Key changes removed a long-running loop, implemented asynchronous WebSocket handling, ensured the WebSocket is opened before sending messages, and fixed a missing WebSocket open call. This reduced connection lag, prevented message-sending before readiness, and improved iteration speed for developers. Commits 0e5adb9128537cb7401b709c78a1522a3c29aa4d and 9b977def6c228b3fdadc870ac0c34a422933560b implemented these fixes.

November 2024 performance summary for githubnext/discovery-agent__facebook__react-native. Delivered key debugger/DevTools improvements: synchronized the Debugger Frontend with upstream rn-chrome-devtools-frontend (BUILD_INFO updated to commit 05367de5e689f448a8474d1d1a8b6f12db52c369); fixed Metro DevTools issues causing unresponsive Reload and Open Dev Menu by listening to bundle URL changes and adding an observer for RCTTriggerReloadCommandNotification (commit 9a60038a40e16925ea1adeb3e3c937c22a615485); and strengthened DevTools WebSocket reconnection stability after relaunching Metro/target app (commit 8507204b533cf87d1e4345a9c062cd10cf0022c1).

October 2024 (mrousavy/hermes) delivered reliability-focused test infrastructure enhancements and debugger behavior improvements. Key features delivered include a dedicated test utility to preserve and reset the CDPAgent test environment across resets, resulting in more deterministic test runs; and a debugger capability change that lets setBreakpointsActive execute even when the debugger is not enabled, supported by new tests. These changes reduce flaky tests, improve CI stability, and broaden debugging capabilities. Commit references: 37540dc0f77c1745bd0b5a5bbb6e88e3cca4423a; b74db1a230d24a30b7f0ce0acd5b7d953da2a7e7.