#50292·expo

React-native dev tools never shows my sources

Author: lochnessopensourceCreated Sep 17, 2026Updated Sep 17, 2026
Labelsneeds reviewcontributor: external

Minimal reproducible example

N/A

Steps to reproduce

After running "npx create-expo-app@latest", and then running my application, my sources NEVER show up in react-native dev tools and therefore i can't set breakpoint. Any idea if this a bug or something on my machine that is causing this? I'm running a development build ( not expo go )

Environment

expo-env-info 2.1.0 environment info:
    System:
      OS: Windows 11 10.0.26200
    Binaries:
      Node: 24.19.0 - C:\Program Files\nodejs\node.EXE
      npm: 11.17.0 - C:\Program Files\nodejs\npm.CMD
    npmPackages:
      expo: ~57.0.23 => 57.0.23
      expo-router: ~57.0.21 => 57.0.21
      react: 19.2.3 => 19.2.3
      react-dom: 19.2.3 => 19.2.3
      react-native: 0.86.3 => 0.86.3
      react-native-web: ~0.21.0 => 0.21.2
    Expo Workflow: managed

Expo Doctor Diagnostics

21/21 checks passed. No issues detected!