Can not erasure types

[CHOYSEN]

Reproduction

https://github.com/CHOYSEN/esbuild-types-issue

b.ts export interface Car
a.ts import Car then export it, should it be erasure?
It works as my expect when a.ts doesn't export Car

[CHOYSEN]

The original issue vitejs/vite#2117

[evanw]

From the documentation:

You should probably enable the isolatedModules TypeScript configuration option if you use TypeScript with esbuild. This prevents you from using features which could cause mis-compilation in environments like esbuild where each file is compiled independently without tracing type references across files. For example, it prevents you from re-exporting types from another module using export {T} from './types' (you need to use export type {T} from './types' instead).

[CHOYSEN]

Thanks, get it!