mirror of https://github.com/sveltejs/svelte
fix: correctly handle closure passed to $derived.by when destructuring (#11028)
* fix: correctly handle closure passed to $derived.by when destructuring * oopspull/11018/head
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---
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"svelte": patch
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---
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fix: correctly handle closure passed to $derived.by when destructuring
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import { test } from '../../test';
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import { log } from './log.js';
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export default test({
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before_test() {
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log.length = 0;
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},
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html: `<button>0</button>`,
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async test({ assert, target, window }) {
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const btn = target.querySelector('button');
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const clickEvent = new window.Event('click', { bubbles: true });
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await btn?.dispatchEvent(clickEvent);
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assert.htmlEqual(target.innerHTML, `<button>2</button>`);
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assert.deepEqual(log, ['create_derived']);
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}
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});
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/** @type {any[]} */
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export const log = [];
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<script>
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import {log} from './log.js'
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let count = $state(0);
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function create_derived() {
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log.push('create_derived');
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return () => {
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return {
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get double() {
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return count * 2;
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}
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}
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}
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}
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let {double} = $derived.by(create_derived());
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</script>
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<button on:click={() => count++}>{double}</button>
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