mirror of https://github.com/sveltejs/svelte
fix: ensure reactions are correctly attached for unowned deriveds (#15158)
* fix: ensure reactions are correctly attached for unowned deriveds * tunepull/15156/head
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---
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'svelte': patch
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---
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fix: ensure reactions are correctly attached for unowned deriveds
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<script>
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let { value = $bindable() } = $props()
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</script>
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<button onclick={() => value = 'a'}>change</button>
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<script>
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let {disabled = false} = $props()
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</script>
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{disabled}
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import { flushSync } from 'svelte';
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import { test } from '../../test';
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export default test({
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async test({ assert, target }) {
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let [btn1, btn2] = target.querySelectorAll('button');
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btn1?.click();
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flushSync();
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btn2?.click();
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flushSync();
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assert.htmlEqual(target.innerHTML, `<button>change</button><button>change</button>\nfalse`);
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}
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});
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<script>
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import Child2 from './Child2.svelte'
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import Child from './Child.svelte'
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let loginname = $state('')
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let password = $state('')
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</script>
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<Child bind:value={loginname} />
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<Child bind:value={password} />
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<Child2 disabled={!loginname || !password} />
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