Types are not visually recognized in VSCode after build

[piusidev]

After building my code with tsup, the types are not visually identified as such in VSCode. The type icon is not displayed correctly, causing confusion when working in the editor, although functionality is not affected.

The source code:

export interface ButtonProps
  extends React.ButtonHTMLAttributes<HTMLButtonElement>,
    VariantProps<typeof buttonVariants> {
  asChild?: boolean
}

The generated types:

interface ButtonProps extends React.ButtonHTMLAttributes<HTMLButtonElement>, VariantProps<typeof buttonVariants> {
    asChild?: boolean;
}

export { type ButtonProps };

Causes this behavior:

And if i manually change the builded code to export the interface directly:

I don't know if this is really a problem, but I'd like to know why it's happening :)