diff --git a/.changeset/cool-seahorses-cross.md b/.changeset/cool-seahorses-cross.md
new file mode 100644
index 000000000000..f6fd7b241a99
--- /dev/null
+++ b/.changeset/cool-seahorses-cross.md
@@ -0,0 +1,5 @@
+---
+'create-svelte': patch
+---
+
+Bump TypeScript version and use `satisfies` operator
diff --git a/package.json b/package.json
index 2c9b245d0d0a..82bbd2bb7c76 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
 		"svelte": "^3.52.0",
 		"tiny-glob": "^0.2.9",
 		"turbo": "^1.6.1",
-		"typescript": "^4.8.4"
+		"typescript": "^4.9.3"
 	},
 	"packageManager": "pnpm@7.14.1",
 	"engines": {
diff --git a/packages/adapter-auto/package.json b/packages/adapter-auto/package.json
index 422efdb690ef..6d3c9388b784 100644
--- a/packages/adapter-auto/package.json
+++ b/packages/adapter-auto/package.json
@@ -31,7 +31,7 @@
 	},
 	"devDependencies": {
 		"@types/node": "^16.11.68",
-		"typescript": "^4.8.4"
+		"typescript": "^4.9.3"
 	},
 	"dependencies": {
 		"import-meta-resolve": "^2.1.0"
diff --git a/packages/adapter-cloudflare-workers/package.json b/packages/adapter-cloudflare-workers/package.json
index 5531ab27f783..8b1501da1c91 100644
--- a/packages/adapter-cloudflare-workers/package.json
+++ b/packages/adapter-cloudflare-workers/package.json
@@ -36,6 +36,6 @@
 	"devDependencies": {
 		"@cloudflare/kv-asset-handler": "^0.2.0",
 		"@types/node": "^16.11.68",
-		"typescript": "^4.8.4"
+		"typescript": "^4.9.3"
 	}
 }
diff --git a/packages/adapter-cloudflare/package.json b/packages/adapter-cloudflare/package.json
index a2d1ad66672a..658667d8c1d5 100644
--- a/packages/adapter-cloudflare/package.json
+++ b/packages/adapter-cloudflare/package.json
@@ -39,7 +39,7 @@
 	"devDependencies": {
 		"@types/node": "^16.11.68",
 		"@types/ws": "^8.5.3",
-		"typescript": "^4.8.4"
+		"typescript": "^4.9.3"
 	},
 	"publishConfig": {
 		"access": "public"
diff --git a/packages/adapter-netlify/package.json b/packages/adapter-netlify/package.json
index be7bfebd6ef3..aad33a989c94 100644
--- a/packages/adapter-netlify/package.json
+++ b/packages/adapter-netlify/package.json
@@ -46,7 +46,7 @@
 		"@types/set-cookie-parser": "^2.4.2",
 		"rimraf": "^3.0.2",
 		"rollup": "^2.79.1",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"uvu": "^0.5.6"
 	}
 }
diff --git a/packages/adapter-node/package.json b/packages/adapter-node/package.json
index e287fbca2a02..7fa6c1f93f53 100644
--- a/packages/adapter-node/package.json
+++ b/packages/adapter-node/package.json
@@ -38,7 +38,7 @@
 		"polka": "^1.0.0-next.22",
 		"rimraf": "^3.0.2",
 		"sirv": "^2.0.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"uvu": "^0.5.6"
 	},
 	"dependencies": {
diff --git a/packages/adapter-static/package.json b/packages/adapter-static/package.json
index 3f383d1f9ed9..54d2f07750b6 100644
--- a/packages/adapter-static/package.json
+++ b/packages/adapter-static/package.json
@@ -29,7 +29,7 @@
 		"@types/node": "^16.11.68",
 		"sirv": "^2.0.2",
 		"svelte": "^3.52.0",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"uvu": "^0.5.6",
 		"vite": "^3.2.1"
 	}
diff --git a/packages/adapter-vercel/index.js b/packages/adapter-vercel/index.js
index 6ce0637d4794..8dc8c3b1e6d0 100644
--- a/packages/adapter-vercel/index.js
+++ b/packages/adapter-vercel/index.js
@@ -82,7 +82,11 @@ const redirects = {
 };
 
 /** @type {import('.').default} **/
-export default function ({ external = [], edge, split } = {}) {
+export default function ({
+	external = /** @type {string[]} */ ([]),
+	edge = false,
+	split = false
+} = {}) {
 	return {
 		name: '@sveltejs/adapter-vercel',
 
diff --git a/packages/adapter-vercel/package.json b/packages/adapter-vercel/package.json
index bb6ca6b5b17e..250a56f8077f 100644
--- a/packages/adapter-vercel/package.json
+++ b/packages/adapter-vercel/package.json
@@ -34,6 +34,6 @@
 	"devDependencies": {
 		"@sveltejs/kit": "workspace:*",
 		"@types/node": "^16.11.68",
-		"typescript": "^4.8.4"
+		"typescript": "^4.9.3"
 	}
 }
diff --git a/packages/create-svelte/package.json b/packages/create-svelte/package.json
index 02af92a790cf..c0f2d4f4f88d 100644
--- a/packages/create-svelte/package.json
+++ b/packages/create-svelte/package.json
@@ -23,7 +23,7 @@
 		"gitignore-parser": "^0.0.2",
 		"prettier": "^2.7.1",
 		"prettier-plugin-svelte": "^2.8.0",
-		"sucrase": "^3.28.0",
+		"sucrase": "^3.29.0",
 		"svelte": "^3.52.0",
 		"svelte-preprocess": "^4.10.7",
 		"tiny-glob": "^0.2.9",
diff --git a/packages/create-svelte/shared/+checkjs/package.json b/packages/create-svelte/shared/+checkjs/package.json
index ccd4dd1269bb..cbda8630a11c 100644
--- a/packages/create-svelte/shared/+checkjs/package.json
+++ b/packages/create-svelte/shared/+checkjs/package.json
@@ -4,7 +4,7 @@
 		"check:watch": "svelte-kit sync && svelte-check --tsconfig ./jsconfig.json --watch"
 	},
 	"devDependencies": {
-		"typescript": "^4.7.4",
+		"typescript": "^4.9.3",
 		"svelte-check": "^2.7.1"
 	}
 }
diff --git a/packages/create-svelte/shared/+typescript/package.json b/packages/create-svelte/shared/+typescript/package.json
index 7b5612f977ae..ce085f64cf82 100644
--- a/packages/create-svelte/shared/+typescript/package.json
+++ b/packages/create-svelte/shared/+typescript/package.json
@@ -4,7 +4,7 @@
 		"check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch"
 	},
 	"devDependencies": {
-		"typescript": "^4.7.4",
+		"typescript": "^4.9.3",
 		"tslib": "^2.3.1",
 		"svelte-check": "^2.7.1",
 		"svelte-preprocess": "^4.10.6"
diff --git a/packages/create-svelte/templates/default/package.json b/packages/create-svelte/templates/default/package.json
index 9f9d03e0d961..aa3d0932787c 100644
--- a/packages/create-svelte/templates/default/package.json
+++ b/packages/create-svelte/templates/default/package.json
@@ -13,7 +13,7 @@
 		"@sveltejs/kit": "workspace:*",
 		"svelte": "^3.52.0",
 		"svelte-preprocess": "^4.10.7",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"vite": "^3.2.1"
 	},
 	"type": "module",
diff --git a/packages/create-svelte/templates/default/src/routes/sverdle/+page.server.ts b/packages/create-svelte/templates/default/src/routes/sverdle/+page.server.ts
index b95dbde04d00..58f3ad2a4cf1 100644
--- a/packages/create-svelte/templates/default/src/routes/sverdle/+page.server.ts
+++ b/packages/create-svelte/templates/default/src/routes/sverdle/+page.server.ts
@@ -3,7 +3,7 @@ import { words, allowed } from './words.server';
 import type { PageServerLoad, Actions } from './$types';
 
 /** @type {import('./$types').PageServerLoad} */
-export const load: PageServerLoad = ({ cookies }) => {
+export const load = (({ cookies }) => {
 	const game = new Game(cookies.get('sverdle'));
 
 	return {
@@ -23,10 +23,10 @@ export const load: PageServerLoad = ({ cookies }) => {
 		 */
 		answer: game.answers.length >= 6 ? game.answer : null
 	};
-};
+}) satisfies PageServerLoad;
 
 /** @type {import('./$types').Actions} */
-export const actions: Actions = {
+export const actions = {
 	/**
 	 * Modify game state in reaction to a keypress. If client-side JavaScript
 	 * is available, this will happen in the browser instead of here
@@ -68,7 +68,7 @@ export const actions: Actions = {
 	restart: async ({ cookies }) => {
 		cookies.delete('sverdle');
 	}
-};
+} satisfies Actions;
 
 class Game {
 	index: number;
diff --git a/packages/create-svelte/templates/skeletonlib/package.template.json b/packages/create-svelte/templates/skeletonlib/package.template.json
index 78e1bbf168cb..6fe03464e46a 100644
--- a/packages/create-svelte/templates/skeletonlib/package.template.json
+++ b/packages/create-svelte/templates/skeletonlib/package.template.json
@@ -12,7 +12,7 @@
 		"@sveltejs/package": "workspace:*",
 		"svelte": "^3.44.0",
 		"tslib": "^2.3.1",
-		"typescript": "^4.8.2",
+		"typescript": "^4.9.3",
 		"vite": "^3.1.0"
 	},
 	"type": "module"
diff --git a/packages/kit/package.json b/packages/kit/package.json
index 7a7c5b948a32..122799f30307 100644
--- a/packages/kit/package.json
+++ b/packages/kit/package.json
@@ -35,7 +35,7 @@
 		"rollup": "^2.79.1",
 		"svelte": "^3.52.0",
 		"svelte-preprocess": "^4.10.7",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"uvu": "^0.5.6",
 		"vite": "^3.2.1"
 	},
diff --git a/packages/kit/src/core/sync/write_types/index.spec.js b/packages/kit/src/core/sync/write_types/index.spec.js
index 41f696fc6e47..7a3a2da9d532 100644
--- a/packages/kit/src/core/sync/write_types/index.spec.js
+++ b/packages/kit/src/core/sync/write_types/index.spec.js
@@ -265,4 +265,28 @@ test('Rewrites action types for a TypeScript module', () => {
 	);
 });
 
+test('Leaves satisfies operator untouched', () => {
+	const source = `
+		import type { Actions, PageServerLoad, RequestEvent } from './$types';
+
+		export function load({ params }) {
+			return {
+				a: 1
+			};
+		} satisfies PageServerLoad
+
+		export const actions = {
+			a: () => {},
+			b: (param: RequestEvent) => {},
+			c: (param) => {},
+		} satisfies Actions
+	`;
+
+	const rewritten = tweak_types(source, true);
+
+	assert.equal(rewritten?.exports, ['load', 'actions']);
+	assert.equal(rewritten?.modified, false);
+	assert.equal(rewritten?.code, source);
+});
+
 test.run();
diff --git a/packages/kit/test/apps/amp/package.json b/packages/kit/test/apps/amp/package.json
index 449dc8cee65f..f9cdec013433 100644
--- a/packages/kit/test/apps/amp/package.json
+++ b/packages/kit/test/apps/amp/package.json
@@ -18,7 +18,7 @@
 		"purify-css": "^1.2.5",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"vite": "^3.2.1"
 	},
 	"type": "module"
diff --git a/packages/kit/test/apps/basics/package.json b/packages/kit/test/apps/basics/package.json
index 4fd661f28220..f7c92769d558 100644
--- a/packages/kit/test/apps/basics/package.json
+++ b/packages/kit/test/apps/basics/package.json
@@ -17,7 +17,7 @@
 		"rimraf": "^3.0.2",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"vite": "^3.2.1"
 	},
 	"type": "module"
diff --git a/packages/kit/test/apps/dev-only/package.json b/packages/kit/test/apps/dev-only/package.json
index b45841ba2a68..8b694b3bd8af 100644
--- a/packages/kit/test/apps/dev-only/package.json
+++ b/packages/kit/test/apps/dev-only/package.json
@@ -15,7 +15,7 @@
 		"rimraf": "^3.0.2",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"vite": "^3.2.1"
 	},
 	"type": "module"
diff --git a/packages/kit/test/apps/options-2/package.json b/packages/kit/test/apps/options-2/package.json
index 59c7711b1426..9f26761d5889 100644
--- a/packages/kit/test/apps/options-2/package.json
+++ b/packages/kit/test/apps/options-2/package.json
@@ -17,7 +17,7 @@
 		"cross-env": "^7.0.3",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"vite": "^3.2.1"
 	},
 	"type": "module"
diff --git a/packages/kit/test/apps/options/package.json b/packages/kit/test/apps/options/package.json
index 5182e19e90f6..16bb2921cba3 100644
--- a/packages/kit/test/apps/options/package.json
+++ b/packages/kit/test/apps/options/package.json
@@ -16,7 +16,7 @@
 		"cross-env": "^7.0.3",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"vite": "^3.2.1"
 	},
 	"type": "module"
diff --git a/packages/kit/test/apps/writes/package.json b/packages/kit/test/apps/writes/package.json
index 44b6885a1975..94c14637ce6a 100644
--- a/packages/kit/test/apps/writes/package.json
+++ b/packages/kit/test/apps/writes/package.json
@@ -17,7 +17,7 @@
 		"rimraf": "^3.0.2",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"vite": "^3.2.1"
 	},
 	"type": "module"
diff --git a/packages/kit/test/build-errors/apps/prerenderable-incorrect-fragment/package.json b/packages/kit/test/build-errors/apps/prerenderable-incorrect-fragment/package.json
index 8588b6dbde04..10d62415006e 100644
--- a/packages/kit/test/build-errors/apps/prerenderable-incorrect-fragment/package.json
+++ b/packages/kit/test/build-errors/apps/prerenderable-incorrect-fragment/package.json
@@ -9,11 +9,11 @@
 		"check": "svelte-kit sync && tsc && svelte-check"
 	},
 	"devDependencies": {
-		"@sveltejs/kit": "workspace:*",
 		"@sveltejs/adapter-auto": "workspace:*",
+		"@sveltejs/kit": "workspace:*",
 		"svelte": "^3.48.0",
 		"svelte-check": "^2.7.1",
-		"typescript": "^4.8.2",
+		"typescript": "^4.9.3",
 		"vite": "^3.1.1"
 	},
 	"type": "module"
diff --git a/packages/kit/test/build-errors/apps/prerenderable-not-prerendered/package.json b/packages/kit/test/build-errors/apps/prerenderable-not-prerendered/package.json
index b52b378e98b1..e42b3bafa737 100644
--- a/packages/kit/test/build-errors/apps/prerenderable-not-prerendered/package.json
+++ b/packages/kit/test/build-errors/apps/prerenderable-not-prerendered/package.json
@@ -13,7 +13,7 @@
 		"@sveltejs/kit": "workspace:*",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"vite": "^3.2.1"
 	},
 	"type": "module"
diff --git a/packages/kit/test/build-errors/apps/private-dynamic-env-dynamic-import/package.json b/packages/kit/test/build-errors/apps/private-dynamic-env-dynamic-import/package.json
index 46b0dbb4e6ca..6b2770f00cf9 100644
--- a/packages/kit/test/build-errors/apps/private-dynamic-env-dynamic-import/package.json
+++ b/packages/kit/test/build-errors/apps/private-dynamic-env-dynamic-import/package.json
@@ -13,7 +13,7 @@
 		"@sveltejs/kit": "workspace:*",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"vite": "^3.2.1"
 	},
 	"type": "module"
diff --git a/packages/kit/test/build-errors/apps/private-dynamic-env/package.json b/packages/kit/test/build-errors/apps/private-dynamic-env/package.json
index 33984220d6c6..825a4f7e9938 100644
--- a/packages/kit/test/build-errors/apps/private-dynamic-env/package.json
+++ b/packages/kit/test/build-errors/apps/private-dynamic-env/package.json
@@ -13,7 +13,7 @@
 		"@sveltejs/kit": "workspace:*",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"vite": "^3.2.1"
 	},
 	"type": "module"
diff --git a/packages/kit/test/build-errors/apps/private-static-env-dynamic-import/package.json b/packages/kit/test/build-errors/apps/private-static-env-dynamic-import/package.json
index 7822973f5372..871bfed6fd01 100644
--- a/packages/kit/test/build-errors/apps/private-static-env-dynamic-import/package.json
+++ b/packages/kit/test/build-errors/apps/private-static-env-dynamic-import/package.json
@@ -13,7 +13,7 @@
 		"@sveltejs/kit": "workspace:*",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"vite": "^3.2.1"
 	},
 	"type": "module"
diff --git a/packages/kit/test/build-errors/apps/private-static-env/package.json b/packages/kit/test/build-errors/apps/private-static-env/package.json
index 7e96c9a6927e..f6c90d3745c6 100644
--- a/packages/kit/test/build-errors/apps/private-static-env/package.json
+++ b/packages/kit/test/build-errors/apps/private-static-env/package.json
@@ -14,7 +14,7 @@
 		"cross-env": "^7.0.3",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"vite": "^3.2.1"
 	},
 	"type": "module"
diff --git a/packages/kit/test/build-errors/apps/server-only-folder-dynamic-import/package.json b/packages/kit/test/build-errors/apps/server-only-folder-dynamic-import/package.json
index 00692a858426..18f901e0fd17 100644
--- a/packages/kit/test/build-errors/apps/server-only-folder-dynamic-import/package.json
+++ b/packages/kit/test/build-errors/apps/server-only-folder-dynamic-import/package.json
@@ -13,7 +13,7 @@
 		"@sveltejs/kit": "workspace:*",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"vite": "^3.2.1"
 	},
 	"type": "module"
diff --git a/packages/kit/test/build-errors/apps/server-only-folder/package.json b/packages/kit/test/build-errors/apps/server-only-folder/package.json
index 9a088dfebf93..6f0a8ebabe10 100644
--- a/packages/kit/test/build-errors/apps/server-only-folder/package.json
+++ b/packages/kit/test/build-errors/apps/server-only-folder/package.json
@@ -13,7 +13,7 @@
 		"@sveltejs/kit": "workspace:*",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"vite": "^3.2.1"
 	},
 	"type": "module"
diff --git a/packages/kit/test/build-errors/apps/server-only-module-dynamic-import/package.json b/packages/kit/test/build-errors/apps/server-only-module-dynamic-import/package.json
index 0f2ba5e53628..93220544b2ef 100644
--- a/packages/kit/test/build-errors/apps/server-only-module-dynamic-import/package.json
+++ b/packages/kit/test/build-errors/apps/server-only-module-dynamic-import/package.json
@@ -13,7 +13,7 @@
 		"@sveltejs/kit": "workspace:*",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"vite": "^3.2.1"
 	},
 	"type": "module"
diff --git a/packages/kit/test/build-errors/apps/server-only-module/package.json b/packages/kit/test/build-errors/apps/server-only-module/package.json
index 71a4acfd3545..d56b5d52c747 100644
--- a/packages/kit/test/build-errors/apps/server-only-module/package.json
+++ b/packages/kit/test/build-errors/apps/server-only-module/package.json
@@ -13,7 +13,7 @@
 		"@sveltejs/kit": "workspace:*",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"vite": "^3.2.1"
 	},
 	"type": "module"
diff --git a/packages/kit/test/prerendering/basics/package.json b/packages/kit/test/prerendering/basics/package.json
index da96037b6e81..0114fb1ba1a4 100644
--- a/packages/kit/test/prerendering/basics/package.json
+++ b/packages/kit/test/prerendering/basics/package.json
@@ -13,7 +13,7 @@
 		"@sveltejs/kit": "workspace:*",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"uvu": "^0.5.6",
 		"vite": "^3.2.1"
 	},
diff --git a/packages/kit/test/prerendering/fallback/package.json b/packages/kit/test/prerendering/fallback/package.json
index 5668cf41110f..a81bec106ad3 100644
--- a/packages/kit/test/prerendering/fallback/package.json
+++ b/packages/kit/test/prerendering/fallback/package.json
@@ -13,7 +13,7 @@
 		"@sveltejs/kit": "workspace:*",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"uvu": "^0.5.6",
 		"vite": "^3.2.1"
 	},
diff --git a/packages/kit/test/prerendering/options/package.json b/packages/kit/test/prerendering/options/package.json
index 99bd60d4d3bb..d927fe6670b3 100644
--- a/packages/kit/test/prerendering/options/package.json
+++ b/packages/kit/test/prerendering/options/package.json
@@ -13,7 +13,7 @@
 		"@sveltejs/kit": "workspace:*",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"uvu": "^0.5.6",
 		"vite": "^3.2.1"
 	},
diff --git a/packages/kit/test/prerendering/paths-base/package.json b/packages/kit/test/prerendering/paths-base/package.json
index 266719dc33a6..cb56d9b16f75 100644
--- a/packages/kit/test/prerendering/paths-base/package.json
+++ b/packages/kit/test/prerendering/paths-base/package.json
@@ -13,7 +13,7 @@
 		"@sveltejs/kit": "workspace:*",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"uvu": "^0.5.6",
 		"vite": "^3.2.1"
 	},
diff --git a/packages/kit/test/prerendering/trailing-slash/package.json b/packages/kit/test/prerendering/trailing-slash/package.json
index 05946eb8122d..8af7dd114324 100644
--- a/packages/kit/test/prerendering/trailing-slash/package.json
+++ b/packages/kit/test/prerendering/trailing-slash/package.json
@@ -13,7 +13,7 @@
 		"@sveltejs/kit": "workspace:*",
 		"svelte": "^3.52.0",
 		"svelte-check": "^2.9.2",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"uvu": "^0.5.6",
 		"vite": "^3.2.1"
 	},
diff --git a/packages/migrate/package.json b/packages/migrate/package.json
index 9ecd73e7e003..af7d09db8f3b 100644
--- a/packages/migrate/package.json
+++ b/packages/migrate/package.json
@@ -24,7 +24,7 @@
 		"magic-string": "^0.26.7",
 		"prompts": "^2.4.2",
 		"tiny-glob": "^0.2.9",
-		"typescript": "^4.8.4"
+		"typescript": "^4.9.3"
 	},
 	"devDependencies": {
 		"@types/prompts": "^2.4.1",
diff --git a/packages/package/package.json b/packages/package/package.json
index 5d7907e35009..6694bd660c7b 100644
--- a/packages/package/package.json
+++ b/packages/package/package.json
@@ -19,7 +19,7 @@
 		"@types/node": "^16.11.68",
 		"svelte": "^3.52.0",
 		"svelte-preprocess": "^4.10.7",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"uvu": "^0.5.6"
 	},
 	"peerDependencies": {
diff --git a/packages/package/test/fixtures/resolve-alias/expected/Test.svelte.d.ts b/packages/package/test/fixtures/resolve-alias/expected/Test.svelte.d.ts
index 613984c1649b..36d723f90b20 100644
--- a/packages/package/test/fixtures/resolve-alias/expected/Test.svelte.d.ts
+++ b/packages/package/test/fixtures/resolve-alias/expected/Test.svelte.d.ts
@@ -8,8 +8,8 @@ declare const __propDef: {
 	};
 	slots: {};
 };
-export declare type TestProps = typeof __propDef.props;
-export declare type TestEvents = typeof __propDef.events;
-export declare type TestSlots = typeof __propDef.slots;
+export type TestProps = typeof __propDef.props;
+export type TestEvents = typeof __propDef.events;
+export type TestSlots = typeof __propDef.slots;
 export default class Test extends SvelteComponentTyped<TestProps, TestEvents, TestSlots> {}
 export {};
diff --git a/packages/package/test/fixtures/typescript/expected/Test.svelte.d.ts b/packages/package/test/fixtures/typescript/expected/Test.svelte.d.ts
index 634969ee93a6..1d2d93df5582 100644
--- a/packages/package/test/fixtures/typescript/expected/Test.svelte.d.ts
+++ b/packages/package/test/fixtures/typescript/expected/Test.svelte.d.ts
@@ -14,9 +14,9 @@ declare const __propDef: {
 		};
 	};
 };
-export declare type TestProps = typeof __propDef.props;
-export declare type TestEvents = typeof __propDef.events;
-export declare type TestSlots = typeof __propDef.slots;
+export type TestProps = typeof __propDef.props;
+export type TestEvents = typeof __propDef.events;
+export type TestSlots = typeof __propDef.slots;
 export default class Test extends SvelteComponentTyped<TestProps, TestEvents, TestSlots> {
 	get astring(): string;
 }
diff --git a/packages/package/test/fixtures/typescript/expected/Test2.svelte.d.ts b/packages/package/test/fixtures/typescript/expected/Test2.svelte.d.ts
index c5b3cb1befca..649f2d35d086 100644
--- a/packages/package/test/fixtures/typescript/expected/Test2.svelte.d.ts
+++ b/packages/package/test/fixtures/typescript/expected/Test2.svelte.d.ts
@@ -9,8 +9,8 @@ declare const __propDef: {
 	};
 	slots: {};
 };
-export declare type Test2Props = typeof __propDef.props;
-export declare type Test2Events = typeof __propDef.events;
-export declare type Test2Slots = typeof __propDef.slots;
+export type Test2Props = typeof __propDef.props;
+export type Test2Events = typeof __propDef.events;
+export type Test2Slots = typeof __propDef.slots;
 export default class Test2 extends SvelteComponentTyped<Test2Props, Test2Events, Test2Slots> {}
 export {};
diff --git a/packages/package/test/watch/expected/Test.svelte.d.ts b/packages/package/test/watch/expected/Test.svelte.d.ts
index b30432f26f44..267596349ae9 100644
--- a/packages/package/test/watch/expected/Test.svelte.d.ts
+++ b/packages/package/test/watch/expected/Test.svelte.d.ts
@@ -8,9 +8,9 @@ declare const __propDef: {
     };
     slots: {};
 };
-export declare type TestProps = typeof __propDef.props;
-export declare type TestEvents = typeof __propDef.events;
-export declare type TestSlots = typeof __propDef.slots;
+export type TestProps = typeof __propDef.props;
+export type TestEvents = typeof __propDef.events;
+export type TestSlots = typeof __propDef.slots;
 export default class Test extends SvelteComponentTyped<TestProps, TestEvents, TestSlots> {
 }
 export {};
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index c4f3b6710e25..4513b821591c 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -15,7 +15,7 @@ importers:
       svelte: ^3.52.0
       tiny-glob: ^0.2.9
       turbo: ^1.6.1
-      typescript: ^4.8.4
+      typescript: ^4.9.3
     devDependencies:
       '@changesets/cli': 2.25.2
       '@rollup/plugin-commonjs': 23.0.2_rollup@2.79.1
@@ -28,18 +28,18 @@ importers:
       svelte: 3.53.1
       tiny-glob: 0.2.9
       turbo: 1.6.3
-      typescript: 4.8.4
+      typescript: 4.9.3
 
   packages/adapter-auto:
     specifiers:
       '@types/node': ^16.11.68
       import-meta-resolve: ^2.1.0
-      typescript: ^4.8.4
+      typescript: ^4.9.3
     dependencies:
       import-meta-resolve: 2.1.0
     devDependencies:
       '@types/node': 16.18.3
-      typescript: 4.8.4
+      typescript: 4.9.3
 
   packages/adapter-cloudflare:
     specifiers:
@@ -47,7 +47,7 @@ importers:
       '@types/node': ^16.11.68
       '@types/ws': ^8.5.3
       esbuild: ^0.15.12
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       worktop: 0.8.0-next.14
     dependencies:
       '@cloudflare/workers-types': 3.18.0
@@ -56,7 +56,7 @@ importers:
     devDependencies:
       '@types/node': 16.18.3
       '@types/ws': 8.5.3
-      typescript: 4.8.4
+      typescript: 4.9.3
 
   packages/adapter-cloudflare-workers:
     specifiers:
@@ -65,7 +65,7 @@ importers:
       '@iarna/toml': ^2.2.5
       '@types/node': ^16.11.68
       esbuild: ^0.15.12
-      typescript: ^4.8.4
+      typescript: ^4.9.3
     dependencies:
       '@cloudflare/workers-types': 3.18.0
       '@iarna/toml': 2.2.5
@@ -73,7 +73,7 @@ importers:
     devDependencies:
       '@cloudflare/kv-asset-handler': 0.2.0
       '@types/node': 16.18.3
-      typescript: 4.8.4
+      typescript: 4.9.3
 
   packages/adapter-netlify:
     specifiers:
@@ -89,7 +89,7 @@ importers:
       rimraf: ^3.0.2
       rollup: ^2.79.1
       set-cookie-parser: ^2.5.1
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       uvu: ^0.5.6
     dependencies:
       '@iarna/toml': 2.2.5
@@ -105,7 +105,7 @@ importers:
       '@types/set-cookie-parser': 2.4.2
       rimraf: 3.0.2
       rollup: 2.79.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       uvu: 0.5.6
 
   packages/adapter-node:
@@ -120,7 +120,7 @@ importers:
       rimraf: ^3.0.2
       rollup: ^2.79.1
       sirv: ^2.0.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       uvu: ^0.5.6
     dependencies:
       '@rollup/plugin-commonjs': 23.0.2_rollup@2.79.1
@@ -134,7 +134,7 @@ importers:
       polka: 1.0.0-next.22
       rimraf: 3.0.2
       sirv: 2.0.2
-      typescript: 4.8.4
+      typescript: 4.9.3
       uvu: 0.5.6
 
   packages/adapter-static:
@@ -143,7 +143,7 @@ importers:
       '@types/node': ^16.11.68
       sirv: ^2.0.2
       svelte: ^3.52.0
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       uvu: ^0.5.6
       vite: ^3.2.1
     devDependencies:
@@ -151,7 +151,7 @@ importers:
       '@types/node': 16.18.3
       sirv: 2.0.2
       svelte: 3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       uvu: 0.5.6
       vite: 3.2.3_@types+node@16.18.3
 
@@ -185,14 +185,14 @@ importers:
       '@types/node': ^16.11.68
       '@vercel/nft': ^0.22.1
       esbuild: ^0.15.12
-      typescript: ^4.8.4
+      typescript: ^4.9.3
     dependencies:
       '@vercel/nft': 0.22.1
       esbuild: 0.15.13
     devDependencies:
       '@sveltejs/kit': link:../kit
       '@types/node': 16.18.3
-      typescript: 4.8.4
+      typescript: 4.9.3
 
   packages/amp:
     specifiers: {}
@@ -209,7 +209,7 @@ importers:
       prettier: ^2.7.1
       prettier-plugin-svelte: ^2.8.0
       prompts: ^2.4.2
-      sucrase: ^3.28.0
+      sucrase: ^3.29.0
       svelte: ^3.52.0
       svelte-preprocess: ^4.10.7
       tiny-glob: ^0.2.9
@@ -226,7 +226,7 @@ importers:
       gitignore-parser: 0.0.2
       prettier: 2.7.1
       prettier-plugin-svelte: 2.8.0_nryolsexf6k3znhuh4uzpugsem
-      sucrase: 3.28.0
+      sucrase: 3.29.0
       svelte: 3.53.1
       svelte-preprocess: 4.10.7_svelte@3.53.1
       tiny-glob: 0.2.9
@@ -240,7 +240,7 @@ importers:
       '@sveltejs/kit': workspace:*
       svelte: ^3.52.0
       svelte-preprocess: ^4.10.7
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       vite: ^3.2.1
     dependencies:
       '@fontsource/fira-mono': 4.5.10
@@ -249,8 +249,8 @@ importers:
       '@sveltejs/adapter-auto': link:../../../adapter-auto
       '@sveltejs/kit': link:../../../kit
       svelte: 3.53.1
-      svelte-preprocess: 4.10.7_f4bsrsgtzvlkrtbz2ig7nipio4
-      typescript: 4.8.4
+      svelte-preprocess: 4.10.7_7dvewpees4iyn2tkw2qzal77a4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/create-svelte/templates/skeleton:
@@ -283,7 +283,7 @@ importers:
       svelte: ^3.52.0
       svelte-preprocess: ^4.10.7
       tiny-glob: ^0.2.9
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       undici: 5.12.0
       uvu: ^0.5.6
       vite: ^3.2.1
@@ -311,8 +311,8 @@ importers:
       marked: 4.2.2
       rollup: 2.79.1
       svelte: 3.53.1
-      svelte-preprocess: 4.10.7_f4bsrsgtzvlkrtbz2ig7nipio4
-      typescript: 4.8.4
+      svelte-preprocess: 4.10.7_7dvewpees4iyn2tkw2qzal77a4
+      typescript: 4.9.3
       uvu: 0.5.6
       vite: 3.2.3_@types+node@16.18.3
 
@@ -324,7 +324,7 @@ importers:
       purify-css: ^1.2.5
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/amp': link:../../../../amp
@@ -333,7 +333,7 @@ importers:
       purify-css: 1.2.5
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/kit/test/apps/basics:
@@ -343,7 +343,7 @@ importers:
       rimraf: ^3.0.2
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../..
@@ -351,7 +351,7 @@ importers:
       rimraf: 3.0.2
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/kit/test/apps/dev-only:
@@ -361,7 +361,7 @@ importers:
       rimraf: ^3.0.2
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../..
@@ -369,7 +369,7 @@ importers:
       rimraf: 3.0.2
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/kit/test/apps/options:
@@ -378,14 +378,14 @@ importers:
       cross-env: ^7.0.3
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../..
       cross-env: 7.0.3
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/kit/test/apps/options-2:
@@ -395,7 +395,7 @@ importers:
       cross-env: ^7.0.3
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/adapter-node': link:../../../../adapter-node
@@ -403,7 +403,7 @@ importers:
       cross-env: 7.0.3
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/kit/test/apps/writes:
@@ -413,7 +413,7 @@ importers:
       rimraf: ^3.0.2
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../..
@@ -421,7 +421,7 @@ importers:
       rimraf: 3.0.2
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/kit/test/build-errors:
@@ -436,14 +436,14 @@ importers:
       '@sveltejs/kit': workspace:*
       svelte: ^3.48.0
       svelte-check: ^2.7.1
-      typescript: ^4.8.2
+      typescript: ^4.9.3
       vite: ^3.1.1
     devDependencies:
       '@sveltejs/adapter-auto': link:../../../../../adapter-auto
       '@sveltejs/kit': link:../../../..
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/kit/test/build-errors/apps/prerenderable-not-prerendered:
@@ -452,14 +452,14 @@ importers:
       '@sveltejs/kit': workspace:*
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/adapter-auto': link:../../../../../adapter-auto
       '@sveltejs/kit': link:../../../..
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/kit/test/build-errors/apps/private-dynamic-env:
@@ -467,13 +467,13 @@ importers:
       '@sveltejs/kit': workspace:*
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../../..
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/kit/test/build-errors/apps/private-dynamic-env-dynamic-import:
@@ -481,13 +481,13 @@ importers:
       '@sveltejs/kit': workspace:*
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../../..
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/kit/test/build-errors/apps/private-static-env:
@@ -496,14 +496,14 @@ importers:
       cross-env: ^7.0.3
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../../..
       cross-env: 7.0.3
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/kit/test/build-errors/apps/private-static-env-dynamic-import:
@@ -511,13 +511,13 @@ importers:
       '@sveltejs/kit': workspace:*
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../../..
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/kit/test/build-errors/apps/server-only-folder:
@@ -525,13 +525,13 @@ importers:
       '@sveltejs/kit': workspace:*
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../../..
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/kit/test/build-errors/apps/server-only-folder-dynamic-import:
@@ -539,13 +539,13 @@ importers:
       '@sveltejs/kit': workspace:*
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../../..
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/kit/test/build-errors/apps/server-only-module:
@@ -553,13 +553,13 @@ importers:
       '@sveltejs/kit': workspace:*
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../../..
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/kit/test/build-errors/apps/server-only-module-dynamic-import:
@@ -567,13 +567,13 @@ importers:
       '@sveltejs/kit': workspace:*
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../../..
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       vite: 3.2.3
 
   packages/kit/test/prerendering/basics:
@@ -581,14 +581,14 @@ importers:
       '@sveltejs/kit': workspace:*
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       uvu: ^0.5.6
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../..
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       uvu: 0.5.6
       vite: 3.2.3
 
@@ -597,14 +597,14 @@ importers:
       '@sveltejs/kit': workspace:*
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       uvu: ^0.5.6
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../..
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       uvu: 0.5.6
       vite: 3.2.3
 
@@ -613,14 +613,14 @@ importers:
       '@sveltejs/kit': workspace:*
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       uvu: ^0.5.6
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../..
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       uvu: 0.5.6
       vite: 3.2.3
 
@@ -629,14 +629,14 @@ importers:
       '@sveltejs/kit': workspace:*
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       uvu: ^0.5.6
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../..
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       uvu: 0.5.6
       vite: 3.2.3
 
@@ -645,14 +645,14 @@ importers:
       '@sveltejs/kit': workspace:*
       svelte: ^3.52.0
       svelte-check: ^2.9.2
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       uvu: ^0.5.6
       vite: ^3.2.1
     devDependencies:
       '@sveltejs/kit': link:../../..
       svelte: 3.53.1
       svelte-check: 2.9.2_svelte@3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
       uvu: 0.5.6
       vite: 3.2.3
 
@@ -664,14 +664,14 @@ importers:
       prettier: ^2.7.1
       prompts: ^2.4.2
       tiny-glob: ^0.2.9
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       uvu: ^0.5.6
     dependencies:
       kleur: 4.1.5
       magic-string: 0.26.7
       prompts: 2.4.2
       tiny-glob: 0.2.9
-      typescript: 4.8.4
+      typescript: 4.9.3
     devDependencies:
       '@types/prompts': 2.4.1
       prettier: 2.7.1
@@ -686,18 +686,18 @@ importers:
       svelte: ^3.52.0
       svelte-preprocess: ^4.10.7
       svelte2tsx: ~0.5.20
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       uvu: ^0.5.6
     dependencies:
       chokidar: 3.5.3
       kleur: 4.1.5
       sade: 1.8.1
-      svelte2tsx: 0.5.20_f4bsrsgtzvlkrtbz2ig7nipio4
+      svelte2tsx: 0.5.20_7dvewpees4iyn2tkw2qzal77a4
     devDependencies:
       '@types/node': 16.18.3
       svelte: 3.53.1
-      svelte-preprocess: 4.10.7_f4bsrsgtzvlkrtbz2ig7nipio4
-      typescript: 4.8.4
+      svelte-preprocess: 4.10.7_7dvewpees4iyn2tkw2qzal77a4
+      typescript: 4.9.3
       uvu: 0.5.6
 
   sites/kit.svelte.dev:
@@ -716,7 +716,7 @@ importers:
       shiki-twoslash: ^3.1.0
       svelte: ^3.52.0
       tiny-glob: ^0.2.9
-      typescript: ^4.8.4
+      typescript: ^4.9.3
       uvu: ^0.5.6
       vite: ^3.2.1
       vite-imagetools: ^4.0.11
@@ -735,7 +735,7 @@ importers:
       shiki-twoslash: 3.1.0
       svelte: 3.53.1
       tiny-glob: 0.2.9
-      typescript: 4.8.4
+      typescript: 4.9.3
       uvu: 0.5.6
       vite: 3.2.3_@types+node@16.18.3
       vite-imagetools: 4.0.11
@@ -3833,7 +3833,7 @@ packages:
       '@typescript/twoslash': 3.1.0
       '@typescript/vfs': 1.3.4
       shiki: 0.10.1
-      typescript: 4.8.4
+      typescript: 4.9.3
     transitivePeerDependencies:
       - supports-color
     dev: true
@@ -4090,8 +4090,8 @@ packages:
     engines: {node: '>=0.10.0'}
     dev: true
 
-  /sucrase/3.28.0:
-    resolution: {integrity: sha512-TK9600YInjuiIhVM3729rH4ZKPOsGeyXUwY+Ugu9eilNbdTFyHr6XcAGYbRVZPDgWj6tgI7bx95aaJjHnbffag==}
+  /sucrase/3.29.0:
+    resolution: {integrity: sha512-bZPAuGA5SdFHuzqIhTAqt9fvNEo9rESqXIG3oiKdF8K4UmkQxC4KlNL3lVyAErXp+mPvUqZ5l13qx6TrDIGf3A==}
     engines: {node: '>=8'}
     hasBin: true
     dependencies:
@@ -4134,8 +4134,8 @@ packages:
       picocolors: 1.0.0
       sade: 1.8.1
       svelte: 3.53.1
-      svelte-preprocess: 4.10.7_f4bsrsgtzvlkrtbz2ig7nipio4
-      typescript: 4.8.4
+      svelte-preprocess: 4.10.7_7dvewpees4iyn2tkw2qzal77a4
+      typescript: 4.9.3
     transitivePeerDependencies:
       - '@babel/core'
       - coffeescript
@@ -4158,7 +4158,7 @@ packages:
       svelte: 3.53.1
     dev: false
 
-  /svelte-preprocess/4.10.7_f4bsrsgtzvlkrtbz2ig7nipio4:
+  /svelte-preprocess/4.10.7_7dvewpees4iyn2tkw2qzal77a4:
     resolution: {integrity: sha512-sNPBnqYD6FnmdBrUmBCaqS00RyCsCpj2BG58A1JBswNF7b0OKviwxqVrOL/CKyJrLSClrSeqQv5BXNg2RUbPOw==}
     engines: {node: '>= 9.11.2'}
     requiresBuild: true
@@ -4206,7 +4206,7 @@ packages:
       sorcery: 0.10.0
       strip-indent: 3.0.0
       svelte: 3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
     dev: true
 
   /svelte-preprocess/4.10.7_svelte@3.53.1:
@@ -4263,7 +4263,7 @@ packages:
     resolution: {integrity: sha512-Q4/hHkktZogGhN5iqxqSi9sjEVoe/NbIxX4hXEHoasTxj+TxEQVAq66LnDMdAZxjmsodkoI5F3slqsS68U7FNw==}
     engines: {node: '>= 8'}
 
-  /svelte2tsx/0.5.20_f4bsrsgtzvlkrtbz2ig7nipio4:
+  /svelte2tsx/0.5.20_7dvewpees4iyn2tkw2qzal77a4:
     resolution: {integrity: sha512-yNHmN/uoAnJ7d1XqVohiNA6TMFOxibHyEddUAHVt1PiLXtbwAJF3WaGYlg8QbOdoXzOVsVNCAlqRUIdULUm+OA==}
     peerDependencies:
       svelte: ^3.24
@@ -4272,7 +4272,7 @@ packages:
       dedent-js: 1.0.1
       pascal-case: 3.1.2
       svelte: 3.53.1
-      typescript: 4.8.4
+      typescript: 4.9.3
     dev: false
 
   /tar-fs/2.1.1:
@@ -4481,8 +4481,8 @@ packages:
     engines: {node: '>=8'}
     dev: true
 
-  /typescript/4.8.4:
-    resolution: {integrity: sha512-QCh+85mCy+h0IGff8r5XWzOVSbBO+KfeYrMQh7NJ58QujwcE22u+NUSmUxqF+un70P9GXKxa2HCNiTTMJknyjQ==}
+  /typescript/4.9.3:
+    resolution: {integrity: sha512-CIfGzTelbKNEnLpLdGFgdyKhG23CKdKgQPOBc+OUNrkJ2vr+KSzsSV5kq5iWhEQbok+quxgGzrAtGWCyU7tHnA==}
     engines: {node: '>=4.2.0'}
     hasBin: true
 
diff --git a/sites/kit.svelte.dev/package.json b/sites/kit.svelte.dev/package.json
index 9dade35a9222..fbc1e0bf0798 100644
--- a/sites/kit.svelte.dev/package.json
+++ b/sites/kit.svelte.dev/package.json
@@ -23,7 +23,7 @@
 		"shiki-twoslash": "^3.1.0",
 		"svelte": "^3.52.0",
 		"tiny-glob": "^0.2.9",
-		"typescript": "^4.8.4",
+		"typescript": "^4.9.3",
 		"uvu": "^0.5.6",
 		"vite": "^3.2.1",
 		"vite-imagetools": "^4.0.11"