React DevTools pre-release build - updated 12/17/2018 at 2:20pm PDT

If you already have the React DevTools extension installed, you may need to temporarily remove it in order to install this prerelease build.

Chrome

  1. download extension
  2. Double-click to extract
  3. Visit chrome://extensions
  4. Ensure "Developer Mode" is enabled
  5. Click "LOAD UNPACKED"
  6. Select extension

Firefox

  1. download extension
  2. Visit about:debugging
  3. Click "Load Temporary Add-on"
  4. Select extension

Testing

Pre-built

Custom

  1. First install the canary release of react, react-dom, and scheduler:
    yarn add react@canary react-dom@canary scheduler@canary
  2. Then run your app in development mode.
  3. Profit!