fix

packages/svelte/src/compiler/phases/3-transform/client/visitors/SvelteBoundary.js

@@ -48,7 +48,11 @@ export function SvelteBoundary(node, context) {
 		if (child.type === 'ConstTag') {
 			has_const = true;
 			if (!context.state.options.experimental.async) {
-				context.visit(child, { ...context.state, consts: const_tags });
+				context.visit(child, {
+					...context.state,
+					consts: const_tags,
+					scope: context.state.scopes.get(node.fragment) ?? context.state.scope
+				});
 			}
 		}
 	}

packages/svelte/tests/snapshot/samples/async-in-derived/_expected/client/index.svelte.js

@@ -25,20 +25,23 @@ export default function Async_in_derived($$anchor, $$props) {
 
 	{
 		var consequent = ($$anchor) => {
-			$.async_body($$anchor, async ($$anchor) => {
+			let yes1;
-				const yes1 = (await $.save($.async_derived(async () => (await $.save(1))())))();
+			let yes2;
-				const yes2 = (await $.save($.async_derived(async () => foo((await $.save(1))()))))();
+			let no1;
+			let no2;
 
-				const no1 = $.derived(() => (async () => {
+			var promises = $.run([
-					return await 1;
+				async () => yes1 = (await $.save($.async_derived(async () => (await $.save(1))())))(),
-				})());
+				async () => yes2 = (await $.save($.async_derived(async () => foo((await $.save(1))()))))(),
 
-				const no2 = $.derived(() => (async () => {
+				() => no1 = $.derived(() => (async () => {
 					return await 1;
-				})());
+				})()),
 
-				if ($.aborted()) return;
+				() => no2 = $.derived(() => (async () => {
-			});
+					return await 1;
+				})())
+			]);
 		};
 
 		$.if(node, ($$render) => {

packages/svelte/tests/snapshot/samples/async-in-derived/_expected/server/index.svelte.js

@@ -18,24 +18,38 @@ export default function Async_in_derived($$renderer, $$props) {
 			}
 		]);
 
-		$$renderer.async_block([], async ($$renderer) => {
 		if (true) {
 			$$renderer.push('<!--[-->');
 
-				const yes1 = (await $.save(1))();
+			let yes1;
-				const yes2 = foo((await $.save(1))());
+			let yes2;
+			let no1;
+			let no2;
 
-				const no1 = (async () => {
+			var promises = $$renderer.run([
+				async () => {
+					yes1 = (await $.save(1))();
+				},
+
+				async () => {
+					yes2 = foo((await $.save(1))());
+				},
+
+				() => {
+					no1 = (async () => {
 						return await 1;
 					})();
+				},
 
-				const no2 = (async () => {
+				() => {
+					no2 = (async () => {
 						return await 1;
 					})();
+				}
+			]);
 		} else {
 			$$renderer.push('<!--[!-->');
 		}
-		});
 
 		$$renderer.push(`<!--]-->`);
 	});