rn-cdp-bridge

Metro log forwarding was removed in RN 0.77, so connect to the CDP WebSocket instead. Run the cdp-console.mjs bridge script, which discovers the target via http://localhost:8081/json/list and streams Runtime.consoleAPICalled events to your terminal.

Run the bridge script with the --network flag to enable the CDP Network domain. It prints requestWillBeSent, responseReceived, and loadingFailed events with method, URL, and status code for each HTTP call.

Release builds use Hermes bytecode with minification, so index.bundle offsets cannot be symbolicated by Metro sourcemaps. Install the debug APK, run adb reverse tcp:8081, and reproduce the crash to get the exact error via RedBox and the CDP stream.

Yes, Expo SDK 50+ uses port 8081 like RN CLI (SDK 49 and earlier use 19000-19002). When multiple RN targets appear, pass --target with a device name or package name substring to attach to the correct app.

Flipper preempts the WebSocket debugging channel, blocking other CDP clients. Close Flipper and retry; also note chrome://inspect no longer works in RN 0.76+, so use the Metro j key or /open-debugger for the GUI.

Hermes CDP does not support async/await syntax, so write Promise chains with .then() and set awaitPromise: true. The require and global objects are unavailable; use globalThis instead, and note Network.getResponseBody is experimental.