As long as it is supported — and at least esbuild does, who cares (as a user). Should I start avoiding every JS feature that is hard to implement in alternative JS runtimes?
At least TypeScript cares enough to have added the `isolatedModules` and the `preserveValueImports` flags:
https://www.typescriptlang.org/tsconfig#isolatedModules
https://www.typescriptlang.org/tsconfig#preserveValueImports
