mirror of https://github.com/sveltejs/svelte
paoloricciuti
6 hours ago
commit
0af2ad75b1
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---
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'svelte': patch
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---
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fix: prevent untracked derived reads from retaining disconnected dependencies
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---
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'svelte': patch
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---
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fix: restore hydration state when custom element attribute updates throw
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---
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'svelte': patch
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---
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fix: flush anything pending before invoking flushSync callback function
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---
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'svelte': patch
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---
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fix: preserve location information for `await` wrappers
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---
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'svelte': patch
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---
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fix: keep a reactive assignment with no dependencies when `migrate` cannot turn it into a declaration
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---
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'svelte': patch
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---
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fix: don't hang `migrate` on a declaration that shares a line with its script tag
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---
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'svelte': patch
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---
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fix: don't warn about a redundant `link` role on `<area>` elements without an `href`
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---
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'svelte': patch
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---
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fix: read batch-local array on each-block commit
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---
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'svelte': patch
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---
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fix: error at compile time when a declaration in a snippet redeclares one of its parameters
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---
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'svelte': patch
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---
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fix: error when using `let:` directives on a component with a `children` snippet
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---
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'svelte': patch
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---
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fix: ignore stale boundary reset callbacks
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---
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'svelte': patch
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---
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fix: handle deferred transitions aborted before initialization
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import { test } from '../../test';
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export default test({
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error: {
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code: 'let_directive_snippet_conflict',
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message:
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'Cannot use `let:` directives on a component that has a `children` snippet. Use snippet parameters instead (e.g. `{#snippet children({ item: x })}`)',
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position: [62, 74]
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}
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});
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<script>
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import Child from './irrelevant';
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</script>
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<Child let:item={x}>
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{#snippet children()}{x}{/snippet}
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</Child>
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import { test } from '../../test';
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export default test({
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error: {
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code: 'let_directive_snippet_conflict',
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message:
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'Cannot use `let:` directives on a component that has a `children` snippet. Use snippet parameters instead (e.g. `{#snippet children({ value })}`)',
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position: [359, 368]
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}
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});
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<script>
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import Child from './irrelevant';
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import Parent from './irrelevant';
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</script>
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<!-- ok -->
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<Child let:value>
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{value}
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{#snippet foo()}x{/snippet}
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</Child>
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<Child>
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{#snippet children({ value })}{value}{/snippet}
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</Child>
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<Parent>
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<Child slot="foo" let:value>
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{#snippet children()}{value}{/snippet}
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</Child>
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</Parent>
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<!-- invalid -->
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<Child let:value>
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{#snippet children()}Value is: {value}{/snippet}
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</Child>
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<script>
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$: count = 7;
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$: other = 8;
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let obj = {};
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$: obj.x = 1;
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</script>
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<p>{count} {other} {obj.x}</p>
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<script>
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import { run } from 'svelte/legacy';
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let count = $state(7);
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let other = $state(8);
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let obj = $state({});
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run(() => {
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obj.x = 1;
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});
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</script>
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<p>{count} {other} {obj.x}</p>
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<script>export let answer</script>
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<p>{answer}</p>
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<script>
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let { answer } = $props();</script>
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<p>{answer}</p>
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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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const [button] = target.querySelectorAll('button');
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button.click();
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flushSync();
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assert.htmlEqual(target.innerHTML, '<button>Reproduce</button><p>Deferred outro</p>');
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}
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});
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<script>
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import { crossfade } from 'svelte/transition';
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let visible = $state(true);
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let restore = $state(false);
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const [send] = crossfade({});
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$effect(() => {
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if (restore) visible = true;
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});
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</script>
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<button
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onclick={() => {
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visible = false;
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restore = true;
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}}
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>
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Reproduce
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</button>
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{#if visible}
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<p out:send={{ key: 'item' }}>Deferred outro</p>
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{/if}
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import { tick } from 'svelte';
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import { test } from '../../test';
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/** @type {Array<() => void>} */
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const resolvers = [];
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export default test({
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transformError: (error) => new Promise((resolve) => resolvers.push(() => resolve(error))),
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async test({ assert, target, logs }) {
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const [error, toggle, reset, destroy] = target.querySelectorAll('button');
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const paragraph = /** @type {HTMLParagraphElement} */ (target.querySelector('p'));
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error.click();
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await tick();
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resolvers.shift()?.();
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await tick();
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assert.htmlEqual(paragraph.innerHTML, 'boom');
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// A retained reset is inert after its boundary has been destroyed
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toggle.click();
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await tick();
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reset.click();
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await tick();
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assert.htmlEqual(paragraph.innerHTML, 'boom');
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// Resolving an error transform cannot resume a destroyed boundary
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toggle.click();
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await tick();
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error.click();
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await tick();
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toggle.click();
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await tick();
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resolvers.shift()?.();
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await tick();
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assert.htmlEqual(paragraph.innerHTML, 'boom');
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// A failed snippet's reset is also inert while the boundary is being destroyed
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toggle.click();
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await tick();
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error.click();
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await tick();
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resolvers.shift()?.();
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await tick();
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destroy.click();
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await tick();
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assert.htmlEqual(paragraph.innerHTML, 'boom,boom');
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assert.deepEqual(logs, ['render', 'render', 'render']);
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}
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});
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<script>
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let show = $state(true);
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let must_throw = $state(false);
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let reset;
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let element;
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let errors = $state([]);
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let reset_during_cleanup = false;
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function throw_error() {
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throw new Error('boom');
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}
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function toggle() {
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must_throw = false;
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show = !show;
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}
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function reset_on_cleanup(_, reset_boundary) {
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return {
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destroy() {
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if (reset_during_cleanup) reset_boundary();
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}
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};
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}
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function track_render() {
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console.log('render');
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}
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</script>
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<button onclick={() => (must_throw = true)}>error</button>
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<button onclick={toggle}>toggle</button>
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<button onclick={() => reset()}>reset</button>
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<button onclick={() => { reset_during_cleanup = true; toggle(); }}>destroy</button>
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<p>{errors.join(',')}</p>
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{#if show}
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<svelte:boundary onerror={(error, fn) => { errors.push(error.message); reset = fn; }}>
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{track_render()}
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<input bind:this={element} />
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{must_throw ? throw_error() : ''}
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{#snippet failed(_, failed_reset)}
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<input bind:this={element} use:reset_on_cleanup={failed_reset} />
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{/snippet}
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</svelte:boundary>
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{/if}
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import { tick } from 'svelte';
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import { test } from '../../test';
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export default test({
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mode: ['hydrate'],
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async test({ assert, target }) {
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await tick();
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assert.htmlEqual(target.innerHTML, '<p>failed: setter error</p><p>after</p>');
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}
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});
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<script module>
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if (!customElements.get('throwing-element')) {
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customElements.define(
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'throwing-element',
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class extends HTMLElement {
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set value(_) {
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throw new Error('setter error');
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}
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}
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);
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}
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</script>
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<svelte:boundary>
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<throwing-element {...{ value: 'boom' }}></throwing-element>
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{#snippet failed(error)}
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<p>failed: {error.message}</p>
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{/snippet}
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</svelte:boundary>
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<p>after</p>
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[
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{
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"code": "declaration_duplicate",
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"message": "`item` has already been declared",
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"start": {
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"line": 13,
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"column": 8
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},
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"end": {
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"line": 13,
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"column": 12
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}
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}
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]
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<!-- this is ok -->
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{#snippet row1(item)}
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{#if item}
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{const item = 1}
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<p>{item}</p>
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{/if}
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{/snippet}
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{@render row1(5)}
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<!-- this is not -->
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{#snippet row2(item)}
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{const item = 1}
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<p>{item}</p>
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{/snippet}
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{@render row2(5)}
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