ReferenceError: process is undefined

[SKCrawford]

The error: ReferenceError: process is undefined

The cause: Installing peer dependency graphql with the version provided in ra-data-opencrud's package.json.

  "peerDependencies": {
    "graphql": "^0.13.2", <------
    "react-admin": "^2.3.0"
  },

The fix: Install the peer dependency graphql with the latest version (currently ^14.3.1).

I don't guarantee that it works perfectly as there may be breaking changes between the major versions, but it at least resolves this specific error for me.