I think once the ESM build is fixed (#7358), decap-cms-app will probably work with React 19.

As a stop-gap solution, I currently use https://github.com/fgnass/decapp – the main trick is to add the following overrides to package.json:

"overrides": {
  "react": "^19.0.0",
  "react-dom": "^19.0.0",
  "react-scroll-sync": "^0.11.2"
}

Any updates on react 19 support? I tried the override workaround, but that didn't seem to work

Edit: I ended up using rollup aliases to temporarily fix my issue:

import alias from '@rollup/plugin-alias';

    alias({
      entries: {
        react: path.resolve(
          __dirname,
          '../../../../node_modules/decap-cms-core/node_modules/react'
        ),
        'react-dom': path.resolve(
          __dirname,
          '../../../../node_modules/decap-cms-core/node_modules/react-dom'
        ),
      },
    }),

Just pointing rollup at react 18 while I'm able to use react 19 everywhere else. This is from a monorepo setup.

This is a pain. Someone (temporary) solved this? My whole app is running great on Nextjs 15 and React 19 but Decap is the only one (mainly because of previews) which breaks as it's using deprecated functions inside its dependencies.

Tried override (npm) / resolutions (yarn) but nothing works.