Rollup Version

4.19.0

Operating System (or Browser)

unrelated

Node Version (if applicable)

No response

Link To Reproduction

https://rollupjs.org/repl/?version=4.19.0&shareable=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

Expected Behaviour

function App($$anchor) {
	set_class(`abc ${('red')}`);
}

export { App as default };

Actual Behaviour

function App($$anchor) {
	set_class(`abc ${('red'}`);
}

export { App as default };

Credit for the discovery and the reproduction goes to @gtm-nayan

Related issue: sveltejs/svelte#12518