Name 'GlobalFetch' not found despite having correct TS version

Question

I just built a web application repository using React/TypeScript, the application works, but the deployment fails:

> build:dev
> SNOWPACK_PUBLIC_APP_ENVIRONMENT=dev snowpack build

[@snowpack/plugin-typescript] src/api/runtime.ts(130,24): error TS2304: Cannot find name 'GlobalFetch'.
[@snowpack/plugin-typescript] Error: Command failed with exit code 2: tsc --noEmit
src/api/runtime.ts(130,24): error TS2304: Cannot find name 'GlobalFetch'.

The strange thing is that the project is running on another machine, so it is not a new development and there are no source code changes. The SO answer to "GlobalFetch" says there is a problem in some 3.x versions of the type script, but I see the installed version has a higher version:

Version "4.2.3"

Any ideas on where to look for the cause?

Answer 1

GlobalFetch The type has been removed from the definition in TS 3.6.

Your other development environments may use older versions of TS.

You either have to

• Downgrade your TS version
• Delete the GlobalFetch type in the code base
• Recreate the type using: declare type GlobalFetch = WindowOrWorkerGlobalScope