tsgo doesn't allow importing from a commonJS module in a way that tsc does allow.

$ yarn run tsc

Done in 0.55s.

yarn run tsgo

index.ts:1:21 - error TS2497: This module can only be referenced with ECMAScript imports/exports by turning on the 'esModuleInterop' flag and referencing its default export.

1 import { foo } from "./shared.vars";
                      ~~~~~~~~~~~~~~~

Found 1 error in index.ts:1

error Command failed with exit code 2.