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Order of execution between script and teardown #16563

@gyzerok

Description

@gyzerok

Describe the bug

Whenever component inside {#key} gets remounted code inside <script> tag executes earlier than the teardown code inside onDestroy.

<script>
	import { onMount, onDestroy, getAbortSignal } from 'svelte'

	console.log('script')

	onMount(() => {
		console.log('mount')
		const signal = getAbortSignal()
		signal.addEventListener('abort', () => console.log('abort'))
	})

	onDestroy(() => {
		console.log('destroy')
	})
</script>
script
mount
script
abort
destroy
mount

To me personally thats a bit counter-intuitive. If we change something inside <script module> for example then we can't rely on cleanup happening before new render.

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irrelevant

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annoyance

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