mirror of https://github.com/sveltejs/svelte
fix: allow await expressions inside `{#await ...}` argument (#16514)
* fix: allow await expressions inside `{#await ...}` argument * add test * apply suggestion from review --------- Co-authored-by: 7nik <kifiranet@gmail.com>pull/16513/head
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---
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'svelte': patch
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---
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fix: allow await expressions inside `{#await ...}` argument
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@ -0,0 +1,43 @@
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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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async test({ assert, target }) {
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const [reset, one, two, reject] = target.querySelectorAll('button');
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await tick();
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assert.htmlEqual(
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target.innerHTML,
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'<button>reset</button><button>one</button><button>two</button><button>reject</button> waiting'
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);
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one.click();
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await tick();
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assert.htmlEqual(
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target.innerHTML,
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'<button>reset</button><button>one</button><button>two</button><button>reject</button> one_res'
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);
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reset.click();
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await tick();
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assert.htmlEqual(
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target.innerHTML,
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'<button>reset</button><button>one</button><button>two</button><button>reject</button> waiting'
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);
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two.click();
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await tick();
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assert.htmlEqual(
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target.innerHTML,
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'<button>reset</button><button>one</button><button>two</button><button>reject</button> two_res'
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);
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reset.click();
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reject.click();
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await tick();
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assert.htmlEqual(
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target.innerHTML,
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'<button>reset</button><button>one</button><button>two</button><button>reject</button> reject_catch'
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);
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}
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});
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@ -0,0 +1,22 @@
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<script>
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let deferred = $state(Promise.withResolvers());
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</script>
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<button onclick={() => deferred = Promise.withResolvers()}>reset</button>
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<button onclick={() => deferred.resolve("one")}>one</button>
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<button onclick={() => deferred.resolve("two")}>two</button>
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<button onclick={() => deferred.reject("reject")}>reject</button>
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<svelte:boundary>
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{#await await deferred.promise + "_res"}
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waiting
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{:then res}
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{res}
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{:catch err}
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{err}_catch
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{/await}
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{#snippet pending()}
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<p>pending</p>
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{/snippet}
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</svelte:boundary>
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