duplicate event handlers generated for svelte:element on:x

[dominikg]

Describe the bug

<svelte:element this="a" on:keydown></svelte:element>

leads to

function instance($$self) {
	function keydown_handler(event) {
		bubble.call(this, $$self, event);
	}

	function keydown_handler(event) {
		bubble.call(this, $$self, event);
	}

	return [keydown_handler];
}

this triggers an error in esbuild 0.16.9 that prevents duplicate names - which might be a bug in esbuild too since their changelog mentions same name functions are ok. see sveltejs/kit#8217

Reproduction

// svelte:element added in 3.47.0
https://svelte.dev/repl/31ddc37cfd684fd78310e6eb74b63e2c?version=3.47.0

// same behavior in current 3.55.0
https://svelte.dev/repl/31ddc37cfd684fd78310e6eb74b63e2c?version=3.55.0

Logs

No response

System Info

-

Severity

annoyance

[Conduitry]

Fixed in 3.55.1 - https://svelte.dev/repl/31ddc37cfd684fd78310e6eb74b63e2c?version=3.55.1