From 05b69164d11aa241f16c9d3904d91fb4aa357970 Mon Sep 17 00:00:00 2001
From: Xia Chao <shapirolutts@gmail.com>
Date: Thu, 27 Aug 2026 21:44:40 +0800
Subject: [PATCH 1/5] fix: omit bind:focused from SSR output (#18724)

---------

Co-authored-by: Xia Chao <236466140+bun-unsafe@users.noreply.github.com>
Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
---
 .changeset/omit-bind-focused-ssr.md             | 5 +++++
 packages/svelte/src/compiler/phases/bindings.js | 4 +++-
 2 files changed, 8 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/omit-bind-focused-ssr.md

diff --git a/.changeset/omit-bind-focused-ssr.md b/.changeset/omit-bind-focused-ssr.md
new file mode 100644
index 0000000000..80200808aa
--- /dev/null
+++ b/.changeset/omit-bind-focused-ssr.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: omit `bind:focused` from SSR output (it has no HTML attribute)
diff --git a/packages/svelte/src/compiler/phases/bindings.js b/packages/svelte/src/compiler/phases/bindings.js
index 6714a6e77d..dfe78da98c 100644
--- a/packages/svelte/src/compiler/phases/bindings.js
+++ b/packages/svelte/src/compiler/phases/bindings.js
@@ -23,7 +23,9 @@ export const binding_properties = {
 		event: 'durationchange',
 		omit_in_ssr: true
 	},
-	focused: {},
+	focused: {
+		omit_in_ssr: true // no corresponding HTML attribute
+	},
 	paused: {
 		valid_elements: ['audio', 'video'],
 		omit_in_ssr: true,

From edbe11ebc93c26410867748a34c4ed311d128de0 Mon Sep 17 00:00:00 2001
From: Simon H <5968653+dummdidumm@users.noreply.github.com>
Date: Thu, 27 Aug 2026 16:27:08 +0200
Subject: [PATCH 2/5] fix: properly apply static textarea value attribute
 during CSR (#18727)

Fixes #18574
Simpler alternative to #18627 - we just special-case this in the "should
this be treated as a dynamic attribute" branches so `$.set_value(...)`
is always generated. Given how edge-case-y this is (why would you not
just write it into the body of the textarea?) this is fine.
---
 .changeset/polite-zoos-melt.md                  |  5 +++++
 .../client/visitors/RegularElement.js           |  1 +
 .../samples/textarea-value/_config.js           | 17 +++++++++++------
 .../samples/textarea-value/main.svelte          |  3 ++-
 4 files changed, 19 insertions(+), 7 deletions(-)
 create mode 100644 .changeset/polite-zoos-melt.md

diff --git a/.changeset/polite-zoos-melt.md b/.changeset/polite-zoos-melt.md
new file mode 100644
index 0000000000..cfff0e82e4
--- /dev/null
+++ b/.changeset/polite-zoos-melt.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: properly apply static textarea value attribute during CSR
diff --git a/packages/svelte/src/compiler/phases/3-transform/client/visitors/RegularElement.js b/packages/svelte/src/compiler/phases/3-transform/client/visitors/RegularElement.js
index adc9ec72dd..0a32e0dd53 100644
--- a/packages/svelte/src/compiler/phases/3-transform/client/visitors/RegularElement.js
+++ b/packages/svelte/src/compiler/phases/3-transform/client/visitors/RegularElement.js
@@ -240,6 +240,7 @@ export function RegularElement(node, context) {
 			if (
 				!is_custom_element &&
 				!cannot_be_set_statically(attribute.name) &&
+				(name !== 'value' || node.name !== 'textarea') &&
 				(attribute.value === true || is_text_attribute(attribute)) &&
 				(name !== 'class' || class_directives.length === 0) &&
 				(name !== 'style' || style_directives.length === 0)
diff --git a/packages/svelte/tests/runtime-legacy/samples/textarea-value/_config.js b/packages/svelte/tests/runtime-legacy/samples/textarea-value/_config.js
index 06264b653b..30e2633154 100644
--- a/packages/svelte/tests/runtime-legacy/samples/textarea-value/_config.js
+++ b/packages/svelte/tests/runtime-legacy/samples/textarea-value/_config.js
@@ -5,14 +5,19 @@ export default test({
 		return { foo: 42 };
 	},
 
-	html: '<textarea></textarea>',
-	ssrHtml: '<textarea>42</textarea>',
+	ssrHtml: '<textarea>42</textarea> <textarea>static</textarea>',
 
-	test({ assert, component, target }) {
-		const textarea = /** @type {HTMLTextAreaElement} */ (target.querySelector('textarea'));
-		assert.strictEqual(textarea.value, '42');
+	test({ assert, component, target, variant }) {
+		assert.htmlEqual(
+			target.innerHTML,
+			`<textarea></textarea> <textarea>${variant === 'hydrate' ? 'static' : ''}</textarea>`
+		);
+
+		const [textarea1, textarea2] = target.querySelectorAll('textarea');
+		assert.strictEqual(textarea1.value, '42');
+		assert.strictEqual(textarea2.value, 'static');
 
 		component.foo = 43;
-		assert.strictEqual(textarea.value, '43');
+		assert.strictEqual(textarea1.value, '43');
 	}
 });
diff --git a/packages/svelte/tests/runtime-legacy/samples/textarea-value/main.svelte b/packages/svelte/tests/runtime-legacy/samples/textarea-value/main.svelte
index 7eaf783f7f..203a3ed039 100644
--- a/packages/svelte/tests/runtime-legacy/samples/textarea-value/main.svelte
+++ b/packages/svelte/tests/runtime-legacy/samples/textarea-value/main.svelte
@@ -2,4 +2,5 @@
 	export let foo;
 </script>
 
-<textarea value='{foo}'/>
\ No newline at end of file
+<textarea value='{foo}'/>
+<textarea value="static"></textarea>

From 74197ccbe1d84cab76c1eefbf3def43903661691 Mon Sep 17 00:00:00 2001
From: Simon H <5968653+dummdidumm@users.noreply.github.com>
Date: Thu, 27 Aug 2026 17:05:23 +0200
Subject: [PATCH 3/5] feat: add getOrInsert/getOrInsertComputed to SvelteMap
 (#18728)

Closes #18014
---
 .changeset/tasty-years-hammer.md           |  5 ++
 packages/svelte/src/reactivity/map.js      | 22 ++++++
 packages/svelte/src/reactivity/map.test.ts | 79 ++++++++++++++++++++++
 packages/svelte/types/index.d.ts           |  4 ++
 4 files changed, 110 insertions(+)
 create mode 100644 .changeset/tasty-years-hammer.md

diff --git a/.changeset/tasty-years-hammer.md b/.changeset/tasty-years-hammer.md
new file mode 100644
index 0000000000..42b559ac9f
--- /dev/null
+++ b/.changeset/tasty-years-hammer.md
@@ -0,0 +1,5 @@
+---
+'svelte': minor
+---
+
+feat: add getOrInsert/getOrInsertComputed to SvelteMap
diff --git a/packages/svelte/src/reactivity/map.js b/packages/svelte/src/reactivity/map.js
index 48d06a05a7..935db8fcb1 100644
--- a/packages/svelte/src/reactivity/map.js
+++ b/packages/svelte/src/reactivity/map.js
@@ -153,6 +153,28 @@ export class SvelteMap extends Map {
 		return super.get(key);
 	}
 
+	/**
+	 * @param {K} key
+	 * @param {V} value
+	 * */
+	getOrInsert(key, value) {
+		if (!super.has(key)) {
+			this.set(key, value);
+		}
+		return /** @type {V} */ (this.get(key));
+	}
+
+	/**
+	 * @param {K} key
+	 * @param {(key: K) => V} callbackFn
+	 */
+	getOrInsertComputed(key, callbackFn) {
+		if (!super.has(key)) {
+			this.set(key, callbackFn(key));
+		}
+		return /** @type {V} */ (this.get(key));
+	}
+
 	/**
 	 * @param {K} key
 	 * @param {V} value
diff --git a/packages/svelte/src/reactivity/map.test.ts b/packages/svelte/src/reactivity/map.test.ts
index 8bb6f72f7b..f5cbb21923 100644
--- a/packages/svelte/src/reactivity/map.test.ts
+++ b/packages/svelte/src/reactivity/map.test.ts
@@ -100,6 +100,85 @@ test('map.get(...)', () => {
 	cleanup();
 });
 
+test('map.getOrInsert(...)', () => {
+	const map = new SvelteMap([
+		[2, 2],
+		[3, 3]
+	]);
+
+	const log: any = [];
+
+	const cleanup = effect_root(() => {
+		render_effect(() => {
+			log.push('get 1', map.getOrInsert(1, 1));
+		});
+
+		render_effect(() => {
+			log.push('get 2', map.getOrInsert(2, 2));
+		});
+
+		render_effect(() => {
+			log.push('get 3', map.getOrInsert(3, 4));
+		});
+	});
+
+	flushSync(() => {
+		map.delete(2);
+	});
+
+	flushSync(() => {
+		map.set(2, 2);
+	});
+
+	assert.deepEqual(log, ['get 1', 1, 'get 2', 2, 'get 3', 3, 'get 2', 2]);
+
+	cleanup();
+});
+
+test('map.getOrInsertComputed(...)', () => {
+	const map = new SvelteMap([
+		[2, 2],
+		[3, 3]
+	]);
+
+	const log: any = [];
+
+	const cleanup = effect_root(() => {
+		render_effect(() => {
+			log.push(
+				'get 1',
+				map.getOrInsertComputed(1, (k) => k)
+			);
+		});
+
+		render_effect(() => {
+			log.push(
+				'get 2',
+				map.getOrInsertComputed(2, (k) => k)
+			);
+		});
+
+		render_effect(() => {
+			log.push(
+				'get 3',
+				map.getOrInsertComputed(3, () => 4)
+			);
+		});
+	});
+
+	flushSync(() => {
+		map.delete(2);
+	});
+
+	flushSync(() => {
+		map.set(2, 2);
+	});
+
+	assert.deepEqual(log, ['get 1', 1, 'get 2', 2, 'get 3', 3, 'get 2', 2]);
+
+	cleanup();
+});
+
 test('map.has(...)', () => {
 	const map = new SvelteMap([
 		[1, 1],
diff --git a/packages/svelte/types/index.d.ts b/packages/svelte/types/index.d.ts
index dcc6dc5914..9e69796691 100644
--- a/packages/svelte/types/index.d.ts
+++ b/packages/svelte/types/index.d.ts
@@ -2466,6 +2466,10 @@ declare module 'svelte/reactivity' {
 		
 		constructor(value?: Iterable<readonly [K, V]> | null | undefined);
 		
+		getOrInsert(key: K, value: V): V;
+		
+		getOrInsertComputed(key: K, callbackFn: (key: K) => V): V;
+		
 		set(key: K, value: V): this;
 		#private;
 	}

From 5034b59e9e6cff42451d9136650f5fbde4c25260 Mon Sep 17 00:00:00 2001
From: Simon H <5968653+dummdidumm@users.noreply.github.com>
Date: Thu, 27 Aug 2026 22:38:50 +0200
Subject: [PATCH 4/5] chore: bump playwright (#18729)

supports later ubuntu versions
---
 package.json                 |  2 +-
 packages/svelte/package.json |  2 +-
 pnpm-lock.yaml               | 66 ++++++++++++++++++++++++++----------
 3 files changed, 50 insertions(+), 20 deletions(-)

diff --git a/package.json b/package.json
index 16fc26bc32..8004698dd1 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "eslint-plugin-lube": "^0.5.1",
     "eslint-plugin-svelte": "^3.15.0",
     "jsdom": "25.0.1",
-    "playwright": "^1.60.0",
+    "playwright": "^1.62.0",
     "prettier": "^3.2.4",
     "prettier-plugin-svelte": "^3.4.0",
     "svelte": "workspace:^",
diff --git a/packages/svelte/package.json b/packages/svelte/package.json
index 2da4ee428d..1f85001520 100644
--- a/packages/svelte/package.json
+++ b/packages/svelte/package.json
@@ -152,7 +152,7 @@
   },
   "devDependencies": {
     "@jridgewell/trace-mapping": "^0.3.25",
-    "@playwright/test": "^1.60.0",
+    "@playwright/test": "^1.62.0",
     "@rollup/plugin-commonjs": "^28.0.1",
     "@rollup/plugin-node-resolve": "^15.3.0",
     "@rollup/plugin-terser": "^0.4.4",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 70dcf70e5b..9224650e7d 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -42,8 +42,8 @@ importers:
         specifier: 25.0.1
         version: 25.0.1
       playwright:
-        specifier: ^1.60.0
-        version: 1.60.0
+        specifier: ^1.62.0
+        version: 1.62.1
       prettier:
         specifier: ^3.2.4
         version: 3.2.4
@@ -121,8 +121,8 @@ importers:
         specifier: ^0.3.25
         version: 0.3.31
       '@playwright/test':
-        specifier: ^1.60.0
-        version: 1.60.0
+        specifier: ^1.62.0
+        version: 1.62.1
       '@rollup/plugin-commonjs':
         specifier: ^28.0.1
         version: 28.0.1(rollup@4.60.1)
@@ -723,9 +723,9 @@ packages:
     resolution: {integrity: sha512-oGB+UxlgWcgQkgwo8GcEGwemoTFt3FIO9ababBmaGwXIoBKZ+GTy0pP185beGg7Llih/NSHSV2XAs1lnznocSg==}
     engines: {node: '>= 8'}
 
-  '@playwright/test@1.60.0':
-    resolution: {integrity: sha512-O71yZIbAh/PxDMNGns37GHBIfrVkEVyn+AXyIa5dOTfb4/xNvRWV+Vv/NMbNCtODB/pO7vLlF2OTmMVLhmr7Ag==}
-    engines: {node: '>=18'}
+  '@playwright/test@1.62.1':
+    resolution: {integrity: sha512-DTcUc8qii+cpHvtOwggMtBRMjKZHXYWdw8syRYu2vtzuq4Wxphqq4NfCs5Zt44L6mA8rfDfj+PHnxFc/FeK6mQ==}
+    engines: {node: '>=20'}
     hasBin: true
 
   '@polka/url@1.0.0-next.25':
@@ -840,131 +840,157 @@ packages:
     resolution: {integrity: sha512-L+34Qqil+v5uC0zEubW7uByo78WOCIrBvci69E7sFASRl0X7b/MB6Cqd1lky/CtcSVTydWa2WZwFuWexjS5o6g==}
     cpu: [arm]
     os: [linux]
+    libc: [glibc]
 
   '@rollup/rollup-linux-arm-gnueabihf@4.62.2':
     resolution: {integrity: sha512-n1GJHPOvpIfhi3TmrCeh6S6URt9BFCt0KQE3qvexyGCTAKpR4Lg+eWvNZEqu7epxwus/8ElT3hacYEucm49SZg==}
     cpu: [arm]
     os: [linux]
+    libc: [glibc]
 
   '@rollup/rollup-linux-arm-musleabihf@4.60.1':
     resolution: {integrity: sha512-n83O8rt4v34hgFzlkb1ycniJh7IR5RCIqt6mz1VRJD6pmhRi0CXdmfnLu9dIUS6buzh60IvACM842Ffb3xd6Gg==}
     cpu: [arm]
     os: [linux]
+    libc: [musl]
 
   '@rollup/rollup-linux-arm-musleabihf@4.62.2':
     resolution: {integrity: sha512-JqgflS8wEB+UXV/vS1RpRbifGBeN4D5lz8D8oOFbFZw4vedvdOgCFAjfBmIMdW3yL10XpQQ0Ambepw6MXrhOnA==}
     cpu: [arm]
     os: [linux]
+    libc: [musl]
 
   '@rollup/rollup-linux-arm64-gnu@4.60.1':
     resolution: {integrity: sha512-Nql7sTeAzhTAja3QXeAI48+/+GjBJ+QmAH13snn0AJSNL50JsDqotyudHyMbO2RbJkskbMbFJfIJKWA6R1LCJQ==}
     cpu: [arm64]
     os: [linux]
+    libc: [glibc]
 
   '@rollup/rollup-linux-arm64-gnu@4.62.2':
     resolution: {integrity: sha512-wnFJkogWvN4jm/hQRF2UBaeUmk20j5+DmHvoyWii2b8HJDyvz1MF2OU/6ynXt2KR63rbZLWkFpoytpdc/yBuSA==}
     cpu: [arm64]
     os: [linux]
+    libc: [glibc]
 
   '@rollup/rollup-linux-arm64-musl@4.60.1':
     resolution: {integrity: sha512-+pUymDhd0ys9GcKZPPWlFiZ67sTWV5UU6zOJat02M1+PiuSGDziyRuI/pPue3hoUwm2uGfxdL+trT6Z9rxnlMA==}
     cpu: [arm64]
     os: [linux]
+    libc: [musl]
 
   '@rollup/rollup-linux-arm64-musl@4.62.2':
     resolution: {integrity: sha512-HVu2bp0zhvJ8xHEV9+UUs7S90VadmBSY3LcIMvozbPo4AuMGDWlz3ymHLHZPX4hR67TKTt8Qp5PJ5RBg/i+RMQ==}
     cpu: [arm64]
     os: [linux]
+    libc: [musl]
 
   '@rollup/rollup-linux-loong64-gnu@4.60.1':
     resolution: {integrity: sha512-VSvgvQeIcsEvY4bKDHEDWcpW4Yw7BtlKG1GUT4FzBUlEKQK0rWHYBqQt6Fm2taXS+1bXvJT6kICu5ZwqKCnvlQ==}
     cpu: [loong64]
     os: [linux]
+    libc: [glibc]
 
   '@rollup/rollup-linux-loong64-gnu@4.62.2':
     resolution: {integrity: sha512-mQqqAV8QaoSgr9I2fKDLY2BAVvmKjWoGiu/cSYQonsLvtqwEn1E4QYfnCOcp5zoEqNhsDYin1s6jx/VJmrxlZg==}
     cpu: [loong64]
     os: [linux]
+    libc: [glibc]
 
   '@rollup/rollup-linux-loong64-musl@4.60.1':
     resolution: {integrity: sha512-4LqhUomJqwe641gsPp6xLfhqWMbQV04KtPp7/dIp0nzPxAkNY1AbwL5W0MQpcalLYk07vaW9Kp1PBhdpZYYcEw==}
     cpu: [loong64]
     os: [linux]
+    libc: [musl]
 
   '@rollup/rollup-linux-loong64-musl@4.62.2':
     resolution: {integrity: sha512-IxKLoxCQ2IWi6bT2akyDUBGsOImDKB+sPp4EsTmwFQ/fMwpCKm8uLSSgP/Kx/QYUgKis6SEZ5/Nlhup0DIA0PQ==}
     cpu: [loong64]
     os: [linux]
+    libc: [musl]
 
   '@rollup/rollup-linux-ppc64-gnu@4.60.1':
     resolution: {integrity: sha512-tLQQ9aPvkBxOc/EUT6j3pyeMD6Hb8QF2BTBnCQWP/uu1lhc9AIrIjKnLYMEroIz/JvtGYgI9dF3AxHZNaEH0rw==}
     cpu: [ppc64]
     os: [linux]
+    libc: [glibc]
 
   '@rollup/rollup-linux-ppc64-gnu@4.62.2':
     resolution: {integrity: sha512-Mk5ha2RQSgyFfmYYLkBpPnUk8D8FriBxesO1u9O75X0mHgXL1UQcH5Itl2lurWL2tj0RxV9b9tJgipac0hRY9A==}
     cpu: [ppc64]
     os: [linux]
+    libc: [glibc]
 
   '@rollup/rollup-linux-ppc64-musl@4.60.1':
     resolution: {integrity: sha512-RMxFhJwc9fSXP6PqmAz4cbv3kAyvD1etJFjTx4ONqFP9DkTkXsAMU4v3Vyc5BgzC+anz7nS/9tp4obsKfqkDHg==}
     cpu: [ppc64]
     os: [linux]
+    libc: [musl]
 
   '@rollup/rollup-linux-ppc64-musl@4.62.2':
     resolution: {integrity: sha512-CjvEnqJL/0/TQ3TXX3OPIJ/kmBellrWd4heXUmHeJlTnmwjKpSJzoehLaL6Xk0ZnMHBu9dZuFADNOrtjF4v+2w==}
     cpu: [ppc64]
     os: [linux]
+    libc: [musl]
 
   '@rollup/rollup-linux-riscv64-gnu@4.60.1':
     resolution: {integrity: sha512-QKgFl+Yc1eEk6MmOBfRHYF6lTxiiiV3/z/BRrbSiW2I7AFTXoBFvdMEyglohPj//2mZS4hDOqeB0H1ACh3sBbg==}
     cpu: [riscv64]
     os: [linux]
+    libc: [glibc]
 
   '@rollup/rollup-linux-riscv64-gnu@4.62.2':
     resolution: {integrity: sha512-1SiZbzwdkaDURsew/tSOrooKiYy7EQGT6m8ufavAi9NEyQb/6VuIxFXAL1fqa4iZe3g4NbNk4P7J32z2tw5Mgg==}
     cpu: [riscv64]
     os: [linux]
+    libc: [glibc]
 
   '@rollup/rollup-linux-riscv64-musl@4.60.1':
     resolution: {integrity: sha512-RAjXjP/8c6ZtzatZcA1RaQr6O1TRhzC+adn8YZDnChliZHviqIjmvFwHcxi4JKPSDAt6Uhf/7vqcBzQJy0PDJg==}
     cpu: [riscv64]
     os: [linux]
+    libc: [musl]
 
   '@rollup/rollup-linux-riscv64-musl@4.62.2':
     resolution: {integrity: sha512-nQts12zJ3NQRoE6uYljOH89v7szzLDvG2JD/vsX+vGXU8w/At1GowTZ5/7qeFQ8m7L55rpR8Okugnuo5bgjy2Q==}
     cpu: [riscv64]
     os: [linux]
+    libc: [musl]
 
   '@rollup/rollup-linux-s390x-gnu@4.60.1':
     resolution: {integrity: sha512-wcuocpaOlaL1COBYiA89O6yfjlp3RwKDeTIA0hM7OpmhR1Bjo9j31G1uQVpDlTvwxGn2nQs65fBFL5UFd76FcQ==}
     cpu: [s390x]
     os: [linux]
+    libc: [glibc]
 
   '@rollup/rollup-linux-s390x-gnu@4.62.2':
     resolution: {integrity: sha512-E9/ll019jhPIJgpzfZoIkBGhcz+kKNgVWYRY0zr9srBdPPFVpvOKW8VaJKUbeK+eZXyQF9ltME+Kk6affeaPgg==}
     cpu: [s390x]
     os: [linux]
+    libc: [glibc]
 
   '@rollup/rollup-linux-x64-gnu@4.60.1':
     resolution: {integrity: sha512-77PpsFQUCOiZR9+LQEFg9GClyfkNXj1MP6wRnzYs0EeWbPcHs02AXu4xuUbM1zhwn3wqaizle3AEYg5aeoohhg==}
     cpu: [x64]
     os: [linux]
+    libc: [glibc]
 
   '@rollup/rollup-linux-x64-gnu@4.62.2':
     resolution: {integrity: sha512-5BqxR/pshjey51iliyzTD5Xi3EN0aLmQ2lZ3lvefVV9c82BvrLo2/6OT55iifpWBufs6kdwWbuOKS841DrmK9A==}
     cpu: [x64]
     os: [linux]
+    libc: [glibc]
 
   '@rollup/rollup-linux-x64-musl@4.60.1':
     resolution: {integrity: sha512-5cIATbk5vynAjqqmyBjlciMJl1+R/CwX9oLk/EyiFXDWd95KpHdrOJT//rnUl4cUcskrd0jCCw3wpZnhIHdD9w==}
     cpu: [x64]
     os: [linux]
+    libc: [musl]
 
   '@rollup/rollup-linux-x64-musl@4.62.2':
     resolution: {integrity: sha512-uNN83XxQrRAh/w0/pmAfibcwyb6YWt4gP+dpnQKPVJshAloQ785ii8CT8ZCIxkGg9opVsvAlGhFitSm6D1Jjpg==}
     cpu: [x64]
     os: [linux]
+    libc: [musl]
 
   '@rollup/rollup-openbsd-x64@4.60.1':
     resolution: {integrity: sha512-cl0w09WsCi17mcmWqqglez9Gk8isgeWvoUZ3WiJFYSR3zjBQc2J5/ihSjpl+VLjPqjQ/1hJRcqBfLjssREQILw==}
@@ -1875,24 +1901,28 @@ packages:
     engines: {node: '>= 12.0.0'}
     cpu: [arm64]
     os: [linux]
+    libc: [glibc]
 
   lightningcss-linux-arm64-musl@1.23.0:
     resolution: {integrity: sha512-cU00LGb6GUXCwof6ACgSMKo3q7XYbsyTj0WsKHLi1nw7pV0NCq8nFTn6ZRBYLoKiV8t+jWl0Hv8KkgymmK5L5g==}
     engines: {node: '>= 12.0.0'}
     cpu: [arm64]
     os: [linux]
+    libc: [musl]
 
   lightningcss-linux-x64-gnu@1.23.0:
     resolution: {integrity: sha512-q4jdx5+5NfB0/qMbXbOmuC6oo7caPnFghJbIAV90cXZqgV8Am3miZhC4p+sQVdacqxfd+3nrle4C8icR3p1AYw==}
     engines: {node: '>= 12.0.0'}
     cpu: [x64]
     os: [linux]
+    libc: [glibc]
 
   lightningcss-linux-x64-musl@1.23.0:
     resolution: {integrity: sha512-G9Ri3qpmF4qef2CV/80dADHKXRAQeQXpQTLx7AiQrBYQHqBjB75oxqj06FCIe5g4hNCqLPnM9fsO4CyiT1sFSQ==}
     engines: {node: '>= 12.0.0'}
     cpu: [x64]
     os: [linux]
+    libc: [musl]
 
   lightningcss-win32-x64-msvc@1.23.0:
     resolution: {integrity: sha512-1rcBDJLU+obPPJM6qR5fgBUiCdZwZLafZM5f9kwjFLkb/UBNIzmae39uCSmh71nzPCTXZqHbvwu23OWnWEz+eg==}
@@ -2077,14 +2107,14 @@ packages:
     resolution: {integrity: sha512-uB80kBFb/tfd68bVleG9T5GGsGPjJrLAUpR5PZIrhBnIaRTQRjqdJSsIKkOP6OAIFbj7GOrcudc5pNjZ+geV2g==}
     engines: {node: '>=6'}
 
-  playwright-core@1.60.0:
-    resolution: {integrity: sha512-9bW6zvX/m0lEbgTKJ6YppOKx8H3VOPBMOCFh2irXFOT4BbHgrx5hPjwJYLT40Lu+4qtD36qKc/Hn56StUW57IA==}
-    engines: {node: '>=18'}
+  playwright-core@1.62.1:
+    resolution: {integrity: sha512-wPYSwEBJY9GHraISXqyqtx0na0LpO3XEX7jNDhntbex7tzUS7kLnZsOlFruFJB4Hi/rhDMjXGqHewDZ68nYZVw==}
+    engines: {node: '>=20'}
     hasBin: true
 
-  playwright@1.60.0:
-    resolution: {integrity: sha512-hheHdokM8cdqCb0lcE3s+zT4t4W+vvjpGxsZlDnikarzx8tSzMebh3UiFtgqwFwnTnjYQcsyMF8ei2mCO/tpeA==}
-    engines: {node: '>=18'}
+  playwright@1.62.1:
+    resolution: {integrity: sha512-0M+L3LAD8/nm554LOla9Ayx0j0tmFZ0FBcoQ7F1VuVHpM/XpiC8RcDzBQB8W5+hA8L22THxELzeF+2WcUzvcLg==}
+    engines: {node: '>=20'}
     hasBin: true
 
   polka@1.0.0-next.25:
@@ -3069,9 +3099,9 @@ snapshots:
       '@nodelib/fs.scandir': 2.1.5
       fastq: 1.16.0
 
-  '@playwright/test@1.60.0':
+  '@playwright/test@1.62.1':
     dependencies:
-      playwright: 1.60.0
+      playwright: 1.62.1
 
   '@polka/url@1.0.0-next.25': {}
 
@@ -4371,11 +4401,11 @@ snapshots:
 
   pify@4.0.1: {}
 
-  playwright-core@1.60.0: {}
+  playwright-core@1.62.1: {}
 
-  playwright@1.60.0:
+  playwright@1.62.1:
     dependencies:
-      playwright-core: 1.60.0
+      playwright-core: 1.62.1
     optionalDependencies:
       fsevents: 2.3.2
 

From 4ae5eb3f23df00de4d60bf40ff5a96580a0719dc Mon Sep 17 00:00:00 2001
From: Adnane Taghi <taghi.adnane@proton.me>
Date: Thu, 27 Aug 2026 21:58:40 +0100
Subject: [PATCH 5/5] feat: add has function to createContext (#18472)

closes #18471.

---------

Co-authored-by: Simon Holthausen <simon.holthausen@vercel.com>
---
 .changeset/short-feet-admire.md                    |  5 +++++
 documentation/docs/06-runtime/02-context.md        |  2 +-
 .../docs/98-reference/.generated/shared-errors.md  |  2 +-
 packages/svelte/messages/shared-errors/errors.md   |  2 +-
 packages/svelte/src/internal/client/context.js     |  6 +++---
 packages/svelte/src/internal/server/context.js     |  4 ++--
 packages/svelte/src/internal/shared/context.js     |  5 +++--
 .../create-context-programmatic/Child.svelte       |  8 +++++++-
 .../samples/create-context-programmatic/_config.js |  2 +-
 .../create-context-programmatic/main.svelte        | 14 +++++++++-----
 .../samples/create-context/Child.svelte            |  8 +++++++-
 .../samples/create-context/_config.js              |  2 +-
 .../samples/create-context/main.svelte             |  6 ++++--
 packages/svelte/types/index.d.ts                   |  4 ++--
 14 files changed, 47 insertions(+), 23 deletions(-)
 create mode 100644 .changeset/short-feet-admire.md

diff --git a/.changeset/short-feet-admire.md b/.changeset/short-feet-admire.md
new file mode 100644
index 0000000000..fdf56477c9
--- /dev/null
+++ b/.changeset/short-feet-admire.md
@@ -0,0 +1,5 @@
+---
+'svelte': minor
+---
+
+feat: add `has` function to `createContext`
diff --git a/documentation/docs/06-runtime/02-context.md b/documentation/docs/06-runtime/02-context.md
index a1e0347b7b..f67339c6cf 100644
--- a/documentation/docs/06-runtime/02-context.md
+++ b/documentation/docs/06-runtime/02-context.md
@@ -4,7 +4,7 @@ title: Context
 
 Context allows components to access values owned by parent components without passing them down as props (potentially through many layers of intermediate components, known as 'prop-drilling').
 
-By creating a `[get, set]` pair of functions with `createContext`, you can set the context in a parent component and get it in a child component:
+By creating a `[get, set, has]` triplet of functions with `createContext`, you can set the context in a parent component and get it in a child component:
 
 <!-- codeblock:start {"title":"Context","selected":"context.ts"} -->
 ```svelte
diff --git a/documentation/docs/98-reference/.generated/shared-errors.md b/documentation/docs/98-reference/.generated/shared-errors.md
index d7596fc068..44616d7c8d 100644
--- a/documentation/docs/98-reference/.generated/shared-errors.md
+++ b/documentation/docs/98-reference/.generated/shared-errors.md
@@ -78,7 +78,7 @@ Certain lifecycle methods can only be used during component initialisation. To f
 Context was not set in the current component or any of its ancestors
 ```
 
-The [`createContext()`](svelte#createContext) utility returns a `[get, set]` pair of functions. `get` will throw an error if `set` was not used to set the context in the current component or any of its ancestors.
+The [`createContext()`](svelte#createContext) utility returns a `[get, set, has]` triplet of functions. `get` will throw an error if `set` was not used to set the context in the current component or any of its ancestors.
 
 ### snippet_without_render_tag
 
diff --git a/packages/svelte/messages/shared-errors/errors.md b/packages/svelte/messages/shared-errors/errors.md
index 43dca57ac8..e005e34fc8 100644
--- a/packages/svelte/messages/shared-errors/errors.md
+++ b/packages/svelte/messages/shared-errors/errors.md
@@ -64,7 +64,7 @@ Certain lifecycle methods can only be used during component initialisation. To f
 
 > Context was not set in the current component or any of its ancestors
 
-The [`createContext()`](svelte#createContext) utility returns a `[get, set]` pair of functions. `get` will throw an error if `set` was not used to set the context in the current component or any of its ancestors.
+The [`createContext()`](svelte#createContext) utility returns a `[get, set, has]` triplet of functions. `get` will throw an error if `set` was not used to set the context in the current component or any of its ancestors.
 
 ## snippet_without_render_tag
 
diff --git a/packages/svelte/src/internal/client/context.js b/packages/svelte/src/internal/client/context.js
index e1571862ed..c3bb660e8c 100644
--- a/packages/svelte/src/internal/client/context.js
+++ b/packages/svelte/src/internal/client/context.js
@@ -72,17 +72,17 @@ export function set_dev_current_component_function(fn) {
 }
 
 /**
- * Returns a `[get, set]` pair of functions for working with context in a type-safe way.
+ * Returns a `[get, set, has]` triplet of functions for working with context in a type-safe way.
  *
  * `get` will throw an error if `set` has not yet been called in the current component or any of
  * its ancestors.
  *
  * @template T
- * @returns {[() => T, (context: T) => T]}
+ * @returns {[() => T, (context: T) => T, () => boolean]}
  * @since 5.40.0
  */
 export function createContext() {
-	return /** @type {[() => T, (context: T) => T]} */ (
+	return /** @type {[() => T, (context: T) => T, () => boolean]} */ (
 		create_context(getContext, setContext, hasContext)
 	);
 }
diff --git a/packages/svelte/src/internal/server/context.js b/packages/svelte/src/internal/server/context.js
index de11c11282..b204c4c138 100644
--- a/packages/svelte/src/internal/server/context.js
+++ b/packages/svelte/src/internal/server/context.js
@@ -12,11 +12,11 @@ export function set_ssr_context(v) {
 
 /**
  * @template T
- * @returns {[() => T, (context: T) => T]}
+ * @returns {[() => T, (context: T) => T, () => boolean]}
  * @since 5.40.0
  */
 export function createContext() {
-	return /** @type {[() => T, (context: T) => T]} */ (
+	return /** @type {[() => T, (context: T) => T, () => boolean]} */ (
 		create_context(getContext, setContext, hasContext)
 	);
 }
diff --git a/packages/svelte/src/internal/shared/context.js b/packages/svelte/src/internal/shared/context.js
index 943e15e415..005c009101 100644
--- a/packages/svelte/src/internal/shared/context.js
+++ b/packages/svelte/src/internal/shared/context.js
@@ -5,7 +5,7 @@ import { lifecycle_outside_component, missing_context } from './errors.js';
  * @param {(key: object) => T} get_context
  * @param {(key: object, context: T) => T} set_context
  * @param {(key: object) => boolean} has_context
- * @returns {[() => T, (context: T) => T]}
+ * @returns {[() => T, (context: T) => T, () => boolean]}
  */
 export function create_context(get_context, set_context, has_context) {
 	const key = {};
@@ -18,7 +18,8 @@ export function create_context(get_context, set_context, has_context) {
 
 			return get_context(key);
 		},
-		(context) => set_context(key, context)
+		(context) => set_context(key, context),
+		() => has_context(key)
 	];
 }
 
diff --git a/packages/svelte/tests/runtime-runes/samples/create-context-programmatic/Child.svelte b/packages/svelte/tests/runtime-runes/samples/create-context-programmatic/Child.svelte
index 3e39d5043e..0255132ad6 100644
--- a/packages/svelte/tests/runtime-runes/samples/create-context-programmatic/Child.svelte
+++ b/packages/svelte/tests/runtime-runes/samples/create-context-programmatic/Child.svelte
@@ -1,7 +1,13 @@
 <script>
-	import { get } from './main.svelte';
+	import { get, has, has_unset } from './main.svelte';
 
 	const message = get();
 </script>
 
 <h1>{message}</h1>
+{#if has()}
+	<h2>it's me</h2>
+{/if}
+{#if !has_unset()}
+	<h2>or not</h2>
+{/if}
diff --git a/packages/svelte/tests/runtime-runes/samples/create-context-programmatic/_config.js b/packages/svelte/tests/runtime-runes/samples/create-context-programmatic/_config.js
index f4374c8759..c2eeca0de8 100644
--- a/packages/svelte/tests/runtime-runes/samples/create-context-programmatic/_config.js
+++ b/packages/svelte/tests/runtime-runes/samples/create-context-programmatic/_config.js
@@ -2,7 +2,7 @@ import { test } from '../../test';
 
 export default test({
 	ssrHtml: `<div></div>`,
-	html: `<div><h1>hello</h1></div>`,
+	html: `<div><h1>hello</h1><h2>it's me</h2><h2>or not</h2></div>`,
 
 	test() {}
 });
diff --git a/packages/svelte/tests/runtime-runes/samples/create-context-programmatic/main.svelte b/packages/svelte/tests/runtime-runes/samples/create-context-programmatic/main.svelte
index 3c42dbf180..8f4fb67d23 100644
--- a/packages/svelte/tests/runtime-runes/samples/create-context-programmatic/main.svelte
+++ b/packages/svelte/tests/runtime-runes/samples/create-context-programmatic/main.svelte
@@ -3,9 +3,11 @@
 	import Child from './Child.svelte';
 
 	/** @type {ReturnType<typeof createContext<string>>} */
-	const [get, set] = createContext();
+	const [get, set, has] = createContext();
+	/** @type {ReturnType<typeof createContext<string>>} */
+	const [, , has_unset] = createContext();
 
-	export { get };
+	export { get, has, has_unset };
 
 	function Wrapper(Component) {
 		return (...args) => {
@@ -15,6 +17,8 @@
 	}
 </script>
 
-<div {@attach (target) => {
-	mount(Wrapper(Child), { target });
-}}></div>
+<div
+	{@attach (target) => {
+		mount(Wrapper(Child), { target });
+	}}
+></div>
diff --git a/packages/svelte/tests/runtime-runes/samples/create-context/Child.svelte b/packages/svelte/tests/runtime-runes/samples/create-context/Child.svelte
index 3e39d5043e..0255132ad6 100644
--- a/packages/svelte/tests/runtime-runes/samples/create-context/Child.svelte
+++ b/packages/svelte/tests/runtime-runes/samples/create-context/Child.svelte
@@ -1,7 +1,13 @@
 <script>
-	import { get } from './main.svelte';
+	import { get, has, has_unset } from './main.svelte';
 
 	const message = get();
 </script>
 
 <h1>{message}</h1>
+{#if has()}
+	<h2>it's me</h2>
+{/if}
+{#if !has_unset()}
+	<h2>or not</h2>
+{/if}
diff --git a/packages/svelte/tests/runtime-runes/samples/create-context/_config.js b/packages/svelte/tests/runtime-runes/samples/create-context/_config.js
index 4ae28e68bd..fa782095de 100644
--- a/packages/svelte/tests/runtime-runes/samples/create-context/_config.js
+++ b/packages/svelte/tests/runtime-runes/samples/create-context/_config.js
@@ -1,5 +1,5 @@
 import { test } from '../../test';
 
 export default test({
-	html: `<h1>hello</h1>`
+	html: `<h1>hello</h1><h2>it's me</h2><h2>or not</h2>`
 });
diff --git a/packages/svelte/tests/runtime-runes/samples/create-context/main.svelte b/packages/svelte/tests/runtime-runes/samples/create-context/main.svelte
index 8d3c50ba55..35093f4c4e 100644
--- a/packages/svelte/tests/runtime-runes/samples/create-context/main.svelte
+++ b/packages/svelte/tests/runtime-runes/samples/create-context/main.svelte
@@ -2,9 +2,11 @@
 	import { createContext } from 'svelte';
 
 	/** @type {ReturnType<typeof createContext<string>>} */
-	const [get, set] = createContext();
+	const [get, set, has] = createContext();
+	/** @type {ReturnType<typeof createContext<string>>} */
+	const [, , has_unset] = createContext();
 
-	export { get };
+	export { get, has, has_unset };
 </script>
 
 <script>
diff --git a/packages/svelte/types/index.d.ts b/packages/svelte/types/index.d.ts
index 9e69796691..661b840354 100644
--- a/packages/svelte/types/index.d.ts
+++ b/packages/svelte/types/index.d.ts
@@ -492,14 +492,14 @@ declare module 'svelte' {
 	 */
 	export function fork(fn: () => void): Fork;
 	/**
-	 * Returns a `[get, set]` pair of functions for working with context in a type-safe way.
+	 * Returns a `[get, set, has]` triplet of functions for working with context in a type-safe way.
 	 *
 	 * `get` will throw an error if `set` has not yet been called in the current component or any of
 	 * its ancestors.
 	 *
 	 * @since 5.40.0
 	 */
-	export function createContext<T>(): [() => T, (context: T) => T];
+	export function createContext<T>(): [() => T, (context: T) => T, () => boolean];
 	/**
 	 * Retrieves the context set with the specified `key` in the current component or any of its
 	 * ancestors. If multiple components set the same key, the value from the closest one is returned.