TypeScript isolatedModules true export generator function

Question

I have a index.ts file that exports a generator function

export function* myFunction() { [...] }

It works fine with --isolatedModules = false but fails to compile with --isolatedModules = true

Error message during compilation:

All files must be modules when the '--isolatedModules' flag is provided.  TS1208

Answer 1

All files must be modules when the '--isolatedModules' flag is provided. TS1208

This error happens when there is no import or export statement in a file (these make a file a module).

The example you provided will not result in this error. However where that error is occurring, just add an export or import.