`verbatimModuleSyntax` leaves empty curly brackets in the JS output

[igordanchenko]

🔎 Search Terms

"verbatimModuleSyntax", "curly brackets", "empty brackets"

🕗 Version & Regression Information

• This is the behavior in every 5.x version I tried, and I reviewed the FAQ for entries about verbatimModuleSyntax

⏯ Playground Link

https://www.typescriptlang.org/play/?jsx=4&verbatimModuleSyntax=true&ts=5.9.2#code/JYWwDg9gTgLgBASRAQwOYFMA0cDeMCeY6iKGAClBGAM4C+cAZpSHAEQB26AHjAPShp0AOgBW1VgG4AUFO6RYcACboGyAK4AbeAzXsAxjGAR2JQQHUoyMESgAKMJRoAuU+UfUAlLilxfcKOgwalAmADxIgrhC0Q5UdLwAfFK0UkA

💻 Code

import Image, {type ImageProps} from "next/image.js";

export default function ImageWrapper(props: ImageProps) {
    return <Image {...props}/>
}

🙁 Actual behavior

TS produces the following JS output when verbatimModuleSyntax is set to true:

import { jsx as _jsx } from "react/jsx-runtime";
import Image, {} from "next/image.js";
export default function ImageWrapper(props) {
    return _jsx(Image, Object.assign({}, props));
}

Notice the empty curly brackets in the import statement that were left off after removing type-only named imports.

🙂 Expected behavior

The empty curly brackets are unnecessary in this case. It is precisely the output TS produces when verbatimModuleSyntax is not enabled:

import { jsx as _jsx } from "react/jsx-runtime";
import Image from "next/image.js";
export default function ImageWrapper(props) {
    return _jsx(Image, Object.assign({}, props));
}

https://www.typescriptlang.org/play/?jsx=4&verbatimModuleSyntax=false&ts=5.9.2#code/JYWwDg9gTgLgBASRAQwOYFMA0cDeMCeY6iKGAClBGAM4C+cAZpSHAEQB26AHjAPShp0AOgBW1VgG4AUFO6RYcACboGyAK4AbeAzXsAxjGAR2JQQHUoyMESgAKMJRoAuU+UfUAlLilxfcKOgwalAmADxIgrhC0Q5UdLwAfFK0UkA

Additional information about the issue

No response

[codenamenam]

The principle of verbatimModuleSyntax is to preserve module syntax exactly as written.
I assumed that keeping type-only named imports with empty braces was intentional, in order to avoid side effects.
However, since it looks awkward and unnecessary, I modified the code so that empty braces are removed only when a default import is present. In other cases, explicitly showing empty braces may still be necessary.