diff --git a/.changeset/large-lies-reply.md b/.changeset/large-lies-reply.md
new file mode 100644
index 000000000000..a4c1869d956d
--- /dev/null
+++ b/.changeset/large-lies-reply.md
@@ -0,0 +1,6 @@
+---
+'create-svelte': patch
+'@sveltejs/kit': patch
+---
+
+Reference Vite/Svelte types inside Kit types
diff --git a/packages/adapter-static/test/apps/prerendered/src/global.d.ts b/packages/adapter-static/test/apps/prerendered/src/global.d.ts
index 79d7d7faa607..63908c66cfd4 100644
--- a/packages/adapter-static/test/apps/prerendered/src/global.d.ts
+++ b/packages/adapter-static/test/apps/prerendered/src/global.d.ts
@@ -1,3 +1 @@
 /// <reference types="@sveltejs/kit" />
-/// <reference types="svelte" />
-/// <reference types="vite/client" />
diff --git a/packages/adapter-static/test/apps/spa/src/global.d.ts b/packages/adapter-static/test/apps/spa/src/global.d.ts
index 79d7d7faa607..63908c66cfd4 100644
--- a/packages/adapter-static/test/apps/spa/src/global.d.ts
+++ b/packages/adapter-static/test/apps/spa/src/global.d.ts
@@ -1,3 +1 @@
 /// <reference types="@sveltejs/kit" />
-/// <reference types="svelte" />
-/// <reference types="vite/client" />
diff --git a/packages/create-svelte/templates/default/src/global.d.ts b/packages/create-svelte/templates/default/src/global.d.ts
index 79d7d7faa607..63908c66cfd4 100644
--- a/packages/create-svelte/templates/default/src/global.d.ts
+++ b/packages/create-svelte/templates/default/src/global.d.ts
@@ -1,3 +1 @@
 /// <reference types="@sveltejs/kit" />
-/// <reference types="svelte" />
-/// <reference types="vite/client" />
diff --git a/packages/create-svelte/templates/skeleton/src/global.d.ts b/packages/create-svelte/templates/skeleton/src/global.d.ts
index 79d7d7faa607..63908c66cfd4 100644
--- a/packages/create-svelte/templates/skeleton/src/global.d.ts
+++ b/packages/create-svelte/templates/skeleton/src/global.d.ts
@@ -1,3 +1 @@
 /// <reference types="@sveltejs/kit" />
-/// <reference types="svelte" />
-/// <reference types="vite/client" />
diff --git a/packages/kit/assets/components/error.svelte b/packages/kit/assets/components/error.svelte
index f6bf40f09f6c..02bfa098d764 100644
--- a/packages/kit/assets/components/error.svelte
+++ b/packages/kit/assets/components/error.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').ErrorLoad} */
 	export function load({ error, status }) {
 		return {
 			props: { error, status }
@@ -7,7 +8,10 @@
 </script>
 
 <script>
+	/** @type {number} */
 	export let status;
+
+	/** @type {Error} */
 	export let error;
 </script>
 
diff --git a/packages/kit/package.json b/packages/kit/package.json
index ea79a056382f..c8a480a11d0a 100644
--- a/packages/kit/package.json
+++ b/packages/kit/package.json
@@ -12,6 +12,7 @@
 		"@sveltejs/kit": "workspace:*",
 		"@types/amphtml-validator": "^1.0.1",
 		"@types/cookie": "^0.4.0",
+		"@types/marked": "^2.0.2",
 		"@types/mime": "^2.0.3",
 		"@types/node": "^14.14.43",
 		"@types/rimraf": "^3.0.0",
@@ -29,6 +30,7 @@
 		"selfsigned": "^1.10.11",
 		"sirv": "^1.0.11",
 		"svelte": "^3.38.2",
+		"svelte-check": "^1.5.2",
 		"tiny-glob": "^0.2.8",
 		"typescript": "^4.2.4",
 		"uvu": "^0.5.1",
@@ -51,7 +53,7 @@
 		"dev": "rm -rf assets/runtime && rollup -cw",
 		"build": "rm -rf assets/runtime && rollup -c",
 		"lint": "eslint --ignore-path .gitignore \"src/**/*.{ts,mjs,js,svelte}\" && npm run check-format",
-		"check": "npx tsc",
+		"check": "tsc && svelte-check",
 		"format": "prettier --write . --config ../../.prettierrc --ignore-path .gitignore",
 		"check-format": "prettier --check . --config ../../.prettierrc --ignore-path .gitignore",
 		"prepublishOnly": "npm run build",
diff --git a/packages/kit/src/runtime/client/start.js b/packages/kit/src/runtime/client/start.js
index 0cac45b36f68..98217a7b4bfe 100644
--- a/packages/kit/src/runtime/client/start.js
+++ b/packages/kit/src/runtime/client/start.js
@@ -57,6 +57,8 @@ export async function start({ paths, target, session, host, route, spa, hydrate
 
 if (import.meta.env.VITE_SVELTEKIT_SERVICE_WORKER) {
 	if ('serviceWorker' in navigator) {
-		navigator.serviceWorker.register(import.meta.env.VITE_SVELTEKIT_SERVICE_WORKER);
+		navigator.serviceWorker.register(
+			/** @type {string} */ (import.meta.env.VITE_SVELTEKIT_SERVICE_WORKER)
+		);
 	}
 }
diff --git a/packages/kit/src/runtime/client/types.d.ts b/packages/kit/src/runtime/client/types.d.ts
index 127e12fc782f..d3ee8a0e8298 100644
--- a/packages/kit/src/runtime/client/types.d.ts
+++ b/packages/kit/src/runtime/client/types.d.ts
@@ -1,5 +1,5 @@
-import { Page, LoadOutput } from '../../../types/page';
-import { CSRComponent, CSRRoute } from '../../../types/internal';
+import { Page } from '../../../types/page';
+import { CSRComponent, CSRRoute, NormalizedLoadOutput } from '../../../types/internal';
 
 export type NavigationInfo = {
 	id: string;
@@ -23,7 +23,7 @@ export type NavigationResult = {
 
 export type BranchNode = {
 	module: CSRComponent;
-	loaded: LoadOutput;
+	loaded: NormalizedLoadOutput;
 	uses: {
 		params: Set<string>;
 		path: boolean;
diff --git a/packages/kit/src/runtime/load.js b/packages/kit/src/runtime/load.js
index e45b8e2372e1..34f368a92df9 100644
--- a/packages/kit/src/runtime/load.js
+++ b/packages/kit/src/runtime/load.js
@@ -1,6 +1,6 @@
 /**
  * @param {import('types/page').LoadOutput} loaded
- * @returns {import('types/page').LoadOutput}
+ * @returns {import('types/internal').NormalizedLoadOutput}
  */
 export function normalize(loaded) {
 	// TODO should this behaviour be dev-only?
@@ -44,5 +44,5 @@ export function normalize(loaded) {
 		}
 	}
 
-	return loaded;
+	return /** @type {import('types/internal').NormalizedLoadOutput} */ (loaded);
 }
diff --git a/packages/kit/src/runtime/server/page/types.d.ts b/packages/kit/src/runtime/server/page/types.d.ts
index 81064825de8c..7c4a653ab977 100644
--- a/packages/kit/src/runtime/server/page/types.d.ts
+++ b/packages/kit/src/runtime/server/page/types.d.ts
@@ -1,9 +1,8 @@
-import { LoadOutput } from '../../../../types/page';
-import { SSRNode } from '../../../../types/internal';
+import { NormalizedLoadOutput, SSRNode } from '../../../../types/internal';
 
 export type Loaded = {
 	node: SSRNode;
-	loaded: LoadOutput;
+	loaded: NormalizedLoadOutput;
 	context: Record<string, any>;
 	fetched: Array<{ url: string; json: string }>;
 	uses_credentials: boolean;
diff --git a/packages/kit/test/ambient.d.ts b/packages/kit/test/ambient.d.ts
index cce6c1449a02..d63031f109e9 100644
--- a/packages/kit/test/ambient.d.ts
+++ b/packages/kit/test/ambient.d.ts
@@ -2,6 +2,10 @@ declare global {
 	interface Window {
 		navigated: Promise<void>;
 		started: boolean;
+
+		// used in tests
+		oops: string;
+		pageContext: any;
 	}
 
 	const goto: (
diff --git a/packages/kit/test/apps/amp/src/routes/host/index.svelte b/packages/kit/test/apps/amp/src/routes/host/index.svelte
index 2bc23da4e386..b1078fb1e0c5 100644
--- a/packages/kit/test/apps/amp/src/routes/host/index.svelte
+++ b/packages/kit/test/apps/amp/src/routes/host/index.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load({ page, fetch }) {
 		const res = await fetch('/host.json');
 		const data = await res.json();
@@ -15,10 +16,13 @@
 <script>
 	import { page } from '$app/stores';
 
+	/** @type {string} */
 	export let host;
+
+	/** @type {any} */
 	export let data;
 </script>
 
 <p data-source="load">{host}</p>
 <p data-source="store">{$page.host}</p>
-<p data-source="endpoint">{data.host}</p>
\ No newline at end of file
+<p data-source="endpoint">{data.host}</p>
diff --git a/packages/kit/test/apps/amp/src/routes/invalid/__tests__.js b/packages/kit/test/apps/amp/src/routes/invalid/__tests__.js
index 947dd15f1fa3..42c8372516c4 100644
--- a/packages/kit/test/apps/amp/src/routes/invalid/__tests__.js
+++ b/packages/kit/test/apps/amp/src/routes/invalid/__tests__.js
@@ -8,9 +8,9 @@ export default function (test, is_dev) {
 			assert.equal(await page.textContent('h1'), 'AMP validation failed');
 
 			assert.ok(body.includes("The tag 'img' may only appear as a descendant of tag 'noscript'"));
-			assert.ok(body.includes('&lt;img src="potato.jpg"&gt;'));
+			assert.ok(body.includes('&lt;img alt="A potato." src="potato.jpg"&gt;'));
 		} else {
-			assert.ok(body.includes('<img src="potato.jpg">'));
+			assert.ok(body.includes('<img alt="A potato." src="potato.jpg">'));
 		}
 	});
 }
diff --git a/packages/kit/test/apps/amp/src/routes/invalid/index.svelte b/packages/kit/test/apps/amp/src/routes/invalid/index.svelte
index b4004269d190..18d8e6f42e8f 100644
--- a/packages/kit/test/apps/amp/src/routes/invalid/index.svelte
+++ b/packages/kit/test/apps/amp/src/routes/invalid/index.svelte
@@ -1 +1 @@
-<img src="potato.jpg">
\ No newline at end of file
+<img alt="A potato." src="potato.jpg">
diff --git a/packages/kit/test/apps/amp/src/routes/valid/index.svelte b/packages/kit/test/apps/amp/src/routes/valid/index.svelte
index 756d75b83102..f6a65bef2cd0 100644
--- a/packages/kit/test/apps/amp/src/routes/valid/index.svelte
+++ b/packages/kit/test/apps/amp/src/routes/valid/index.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load({ fetch }) {
 		const res = await fetch('/valid.json');
 		return {
@@ -9,6 +10,8 @@
 
 <script>
 	import { browser, dev, amp } from '$app/env';
+
+	/** @type {number} */
 	export let answer;
 </script>
 
@@ -20,4 +23,4 @@
 	p {
 		color: red;
 	}
-</style>
\ No newline at end of file
+</style>
diff --git a/packages/kit/test/apps/basics/src/routes/$error.svelte b/packages/kit/test/apps/basics/src/routes/$error.svelte
index 759ea7955b8b..40487254525c 100644
--- a/packages/kit/test/apps/basics/src/routes/$error.svelte
+++ b/packages/kit/test/apps/basics/src/routes/$error.svelte
@@ -10,6 +10,7 @@
 <script>
 	/** @type {number} */
 	export let status;
+
 	/** @type {Error} */
 	export let error;
 </script>
diff --git a/packages/kit/test/apps/basics/src/routes/$layout.svelte b/packages/kit/test/apps/basics/src/routes/$layout.svelte
index 20f713edcc67..070de74c9f47 100644
--- a/packages/kit/test/apps/basics/src/routes/$layout.svelte
+++ b/packages/kit/test/apps/basics/src/routes/$layout.svelte
@@ -18,6 +18,7 @@
 		Object.assign(window, { goto, invalidate, prefetch, prefetchRoutes });
 	}
 
+	/** @type {{ bar: string }} */
 	export let foo;
 </script>
 
diff --git a/packages/kit/test/apps/basics/src/routes/asset-import/index.svelte b/packages/kit/test/apps/basics/src/routes/asset-import/index.svelte
index 9913b273531b..3648f1afaca0 100644
--- a/packages/kit/test/apps/basics/src/routes/asset-import/index.svelte
+++ b/packages/kit/test/apps/basics/src/routes/asset-import/index.svelte
@@ -4,4 +4,4 @@
 </script>
 
 <img alt="svelte" src={small}>
-<img alt="potatoes" src={large}>
\ No newline at end of file
+<img alt="potatoes" src={large}>
diff --git a/packages/kit/test/apps/basics/src/routes/caching/index.svelte b/packages/kit/test/apps/basics/src/routes/caching/index.svelte
index e3060cc1dc20..a0fb22431f6e 100644
--- a/packages/kit/test/apps/basics/src/routes/caching/index.svelte
+++ b/packages/kit/test/apps/basics/src/routes/caching/index.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load() {
 		return {
 			maxage: 30
@@ -6,4 +7,4 @@
 	}
 </script>
 
-<h1>this page will be cached for 30 seconds</h1>
\ No newline at end of file
+<h1>this page will be cached for 30 seconds</h1>
diff --git a/packages/kit/test/apps/basics/src/routes/caching/private/uses-fetch.svelte b/packages/kit/test/apps/basics/src/routes/caching/private/uses-fetch.svelte
index 09bcc4725686..d8159d28ca61 100644
--- a/packages/kit/test/apps/basics/src/routes/caching/private/uses-fetch.svelte
+++ b/packages/kit/test/apps/basics/src/routes/caching/private/uses-fetch.svelte
@@ -1,6 +1,8 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load({ page, fetch }) {
 		const res = await fetch('/caching/private/uses-fetch.json', {
+			// @ts-ignore
 			credentials: page.query.get('credentials')
 		});
 
@@ -11,4 +13,4 @@
 	}
 </script>
 
-<h1>this page will be cached for 30 seconds</h1>
\ No newline at end of file
+<h1>this page will be cached for 30 seconds</h1>
diff --git a/packages/kit/test/apps/basics/src/routes/caching/private/uses-session.svelte b/packages/kit/test/apps/basics/src/routes/caching/private/uses-session.svelte
index 17d2217e6143..eb32f9809fad 100644
--- a/packages/kit/test/apps/basics/src/routes/caching/private/uses-session.svelte
+++ b/packages/kit/test/apps/basics/src/routes/caching/private/uses-session.svelte
@@ -1,11 +1,15 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load({ session }) {
 		const session_exists = !!session;
 
 		return {
+			props: {
+				session_exists
+			},
 			maxage: 30
 		};
 	}
 </script>
 
-<h1>this page will be cached for 30 seconds</h1>
\ No newline at end of file
+<h1>this page will be cached for 30 seconds</h1>
diff --git a/packages/kit/test/apps/basics/src/routes/delete-route/index.svelte b/packages/kit/test/apps/basics/src/routes/delete-route/index.svelte
index d2f09765f8ed..2fac8001cd5c 100644
--- a/packages/kit/test/apps/basics/src/routes/delete-route/index.svelte
+++ b/packages/kit/test/apps/basics/src/routes/delete-route/index.svelte
@@ -1,4 +1,5 @@
 <script>
+	/** @type {string} */
 	let status;
 
 	function del() {
diff --git a/packages/kit/test/apps/basics/src/routes/errors/__tests__.js b/packages/kit/test/apps/basics/src/routes/errors/__tests__.js
index cda200e4a1bd..9597874fbafa 100644
--- a/packages/kit/test/apps/basics/src/routes/errors/__tests__.js
+++ b/packages/kit/test/apps/basics/src/routes/errors/__tests__.js
@@ -202,7 +202,7 @@ export default function (test, is_dev) {
 		assert.equal(await page.textContent('#message'), 'This is your custom error page saying: ""');
 
 		const contents = await page.textContent('#stack');
-		const location = 'endpoint.svelte:11:15';
+		const location = 'endpoint.svelte:12:15';
 		const has_stack_trace = contents.includes(location);
 
 		if (is_dev) {
diff --git a/packages/kit/test/apps/basics/src/routes/errors/endpoint.svelte b/packages/kit/test/apps/basics/src/routes/errors/endpoint.svelte
index e1507849cdb0..948899a682a3 100644
--- a/packages/kit/test/apps/basics/src/routes/errors/endpoint.svelte
+++ b/packages/kit/test/apps/basics/src/routes/errors/endpoint.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load({ fetch }) {
 		const res = await fetch('/errors/endpoint.json');
 		if (res.ok) {
@@ -8,7 +9,7 @@
 		} else {
 			return {
 				status: res.status,
-				error: new Error(await res.statusText)
+				error: new Error(res.statusText)
 			};
 		}
 	}
diff --git a/packages/kit/test/apps/basics/src/routes/errors/load-client.svelte b/packages/kit/test/apps/basics/src/routes/errors/load-client.svelte
index c0fd6d7fa9be..c56e0bb9b622 100644
--- a/packages/kit/test/apps/basics/src/routes/errors/load-client.svelte
+++ b/packages/kit/test/apps/basics/src/routes/errors/load-client.svelte
@@ -1,6 +1,7 @@
 <script context="module">
 	import { browser } from '$app/env';
 
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load() {
 		if (browser) {
 			throw new Error('Crashing now');
diff --git a/packages/kit/test/apps/basics/src/routes/errors/load-error-client.svelte b/packages/kit/test/apps/basics/src/routes/errors/load-error-client.svelte
index f59ebdeb5405..32ea0866cdb5 100644
--- a/packages/kit/test/apps/basics/src/routes/errors/load-error-client.svelte
+++ b/packages/kit/test/apps/basics/src/routes/errors/load-error-client.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load() {
 		if (typeof window !== 'undefined') {
 			return { status: 555, error: new Error('Not found') };
diff --git a/packages/kit/test/apps/basics/src/routes/errors/load-error-malformed-client.svelte b/packages/kit/test/apps/basics/src/routes/errors/load-error-malformed-client.svelte
index 362e0e529fb0..4e1101a8d6d7 100644
--- a/packages/kit/test/apps/basics/src/routes/errors/load-error-malformed-client.svelte
+++ b/packages/kit/test/apps/basics/src/routes/errors/load-error-malformed-client.svelte
@@ -1,6 +1,8 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load() {
 		if (typeof window !== 'undefined') {
+			// @ts-ignore
 			return { status: 555, error: {} };
 		}
 
diff --git a/packages/kit/test/apps/basics/src/routes/errors/load-error-malformed-server.svelte b/packages/kit/test/apps/basics/src/routes/errors/load-error-malformed-server.svelte
index 9f0235308e2e..b092d678ddb0 100644
--- a/packages/kit/test/apps/basics/src/routes/errors/load-error-malformed-server.svelte
+++ b/packages/kit/test/apps/basics/src/routes/errors/load-error-malformed-server.svelte
@@ -1,5 +1,7 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load() {
+		// @ts-ignore
 		return { status: 555, error: {} };
 	}
 </script>
diff --git a/packages/kit/test/apps/basics/src/routes/errors/load-error-server.svelte b/packages/kit/test/apps/basics/src/routes/errors/load-error-server.svelte
index 8bd8f1780483..9e0a86b05c58 100644
--- a/packages/kit/test/apps/basics/src/routes/errors/load-error-server.svelte
+++ b/packages/kit/test/apps/basics/src/routes/errors/load-error-server.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load() {
 		return { status: 555, error: new Error('Not found') };
 	}
diff --git a/packages/kit/test/apps/basics/src/routes/errors/load-error-string-server.svelte b/packages/kit/test/apps/basics/src/routes/errors/load-error-string-server.svelte
index 09ad59c2612b..7529e27b3efe 100644
--- a/packages/kit/test/apps/basics/src/routes/errors/load-error-string-server.svelte
+++ b/packages/kit/test/apps/basics/src/routes/errors/load-error-string-server.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load() {
 		return { status: 555, error: 'Not found' };
 	}
diff --git a/packages/kit/test/apps/basics/src/routes/errors/load-server.svelte b/packages/kit/test/apps/basics/src/routes/errors/load-server.svelte
index 23c524dd0c7a..de29844f579b 100644
--- a/packages/kit/test/apps/basics/src/routes/errors/load-server.svelte
+++ b/packages/kit/test/apps/basics/src/routes/errors/load-server.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load() {
 		throw new Error('Crashing now');
 	}
diff --git a/packages/kit/test/apps/basics/src/routes/errors/nested-error-page/$error.svelte b/packages/kit/test/apps/basics/src/routes/errors/nested-error-page/$error.svelte
index 7614107e4c89..e74d57cc7c61 100644
--- a/packages/kit/test/apps/basics/src/routes/errors/nested-error-page/$error.svelte
+++ b/packages/kit/test/apps/basics/src/routes/errors/nested-error-page/$error.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').ErrorLoad} */
 	export async function load({ status, error }) {
 		return {
 			props: {
@@ -30,4 +31,4 @@
 	h1 {
 		color: blue;
 	}
-</style>
\ No newline at end of file
+</style>
diff --git a/packages/kit/test/apps/basics/src/routes/imports/markdown.svelte b/packages/kit/test/apps/basics/src/routes/imports/markdown.svelte
index 1ab5d377062b..e0152b83714c 100644
--- a/packages/kit/test/apps/basics/src/routes/imports/markdown.svelte
+++ b/packages/kit/test/apps/basics/src/routes/imports/markdown.svelte
@@ -2,4 +2,4 @@
 	import marked from 'marked';
 </script>
 
-<main>{@html marked('this is some **markdown**')}</main>
\ No newline at end of file
+<main>{@html marked('this is some **markdown**')}</main>
diff --git a/packages/kit/test/apps/basics/src/routes/load/[dynamic].svelte b/packages/kit/test/apps/basics/src/routes/load/[dynamic].svelte
index 04316033c527..18af7ef4a2ed 100644
--- a/packages/kit/test/apps/basics/src/routes/load/[dynamic].svelte
+++ b/packages/kit/test/apps/basics/src/routes/load/[dynamic].svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load({ page, fetch }) {
 		const res = await fetch(`/load/${page.params.dynamic}.json`);
 		return {
@@ -8,6 +9,7 @@
 </script>
 
 <script>
+	/** @type {string} */
 	export let name;
 </script>
 
diff --git a/packages/kit/test/apps/basics/src/routes/load/context/$layout.svelte b/packages/kit/test/apps/basics/src/routes/load/context/$layout.svelte
index ae7b792dbdcb..cef29dfcfb0a 100644
--- a/packages/kit/test/apps/basics/src/routes/load/context/$layout.svelte
+++ b/packages/kit/test/apps/basics/src/routes/load/context/$layout.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load() {
 		return {
 			context: {
@@ -8,4 +9,4 @@
 	}
 </script>
 
-<slot></slot>
\ No newline at end of file
+<slot></slot>
diff --git a/packages/kit/test/apps/basics/src/routes/load/context/[x]/$layout.svelte b/packages/kit/test/apps/basics/src/routes/load/context/[x]/$layout.svelte
index 8ed74121d14f..f692444caa0a 100644
--- a/packages/kit/test/apps/basics/src/routes/load/context/[x]/$layout.svelte
+++ b/packages/kit/test/apps/basics/src/routes/load/context/[x]/$layout.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load({ page, context }) {
 		return {
 			context: {
@@ -9,4 +10,4 @@
 	}
 </script>
 
-<slot></slot>
\ No newline at end of file
+<slot></slot>
diff --git a/packages/kit/test/apps/basics/src/routes/load/context/[x]/[y]/$layout.svelte b/packages/kit/test/apps/basics/src/routes/load/context/[x]/[y]/$layout.svelte
index 4680186747b6..83fe116d4d94 100644
--- a/packages/kit/test/apps/basics/src/routes/load/context/[x]/[y]/$layout.svelte
+++ b/packages/kit/test/apps/basics/src/routes/load/context/[x]/[y]/$layout.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load({ page }) {
 		return {
 			context: {
@@ -8,4 +9,4 @@
 	}
 </script>
 
-<slot></slot>
\ No newline at end of file
+<slot></slot>
diff --git a/packages/kit/test/apps/basics/src/routes/load/context/[x]/[y]/[z].svelte b/packages/kit/test/apps/basics/src/routes/load/context/[x]/[y]/[z].svelte
index 2cb885f6e1e9..eaedb482e21c 100644
--- a/packages/kit/test/apps/basics/src/routes/load/context/[x]/[y]/[z].svelte
+++ b/packages/kit/test/apps/basics/src/routes/load/context/[x]/[y]/[z].svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load({ page, context }) {
 		return {
 			props: {
@@ -10,11 +11,18 @@
 </script>
 
 <script>
+	/** @type {string} */
 	export let message;
+
+	/** @type {string} */
 	export let x;
+
+	/** @type {string} */
 	export let y;
+
+	/** @type {string} */
 	export let z;
 </script>
 
 <h1>message: {message}</h1>
-<pre>{JSON.stringify({x, y, z})}</pre>
\ No newline at end of file
+<pre>{JSON.stringify({x, y, z})}</pre>
diff --git a/packages/kit/test/apps/basics/src/routes/load/index.svelte b/packages/kit/test/apps/basics/src/routes/load/index.svelte
index 155b3523ec8b..8565ed52a359 100644
--- a/packages/kit/test/apps/basics/src/routes/load/index.svelte
+++ b/packages/kit/test/apps/basics/src/routes/load/index.svelte
@@ -1,6 +1,7 @@
 <script context="module">
 	import { browser } from '$app/env';
 
+	/** @type {import('@sveltejs/kit').Load} */
 	export function load(pageContext) {
 		if (browser) {
 			window.pageContext = pageContext;
@@ -13,6 +14,7 @@
 </script>
 
 <script>
+	/** @type {string} */
 	export let foo;
 </script>
 
diff --git a/packages/kit/test/apps/basics/src/routes/load/relay.svelte b/packages/kit/test/apps/basics/src/routes/load/relay.svelte
index 80d3acb6ed3c..956c2e676c57 100644
--- a/packages/kit/test/apps/basics/src/routes/load/relay.svelte
+++ b/packages/kit/test/apps/basics/src/routes/load/relay.svelte
@@ -11,6 +11,7 @@
 </script>
 
 <script>
+	/** @type {string} */
 	export let answer;
 </script>
 
diff --git a/packages/kit/test/apps/basics/src/routes/load/serialization.svelte b/packages/kit/test/apps/basics/src/routes/load/serialization.svelte
index ff7a700621e1..9fdb8226d67f 100644
--- a/packages/kit/test/apps/basics/src/routes/load/serialization.svelte
+++ b/packages/kit/test/apps/basics/src/routes/load/serialization.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load({ fetch }) {
 		const res = await fetch('/load/serialization.json');
 		return {
@@ -8,6 +9,7 @@
 </script>
 
 <script>
+	/** @type {number} */
 	export let answer;
 </script>
 
diff --git a/packages/kit/test/apps/basics/src/routes/query/__tests__.js b/packages/kit/test/apps/basics/src/routes/query/__tests__.js
index d5c0ee9f5e0e..594a603d516b 100644
--- a/packages/kit/test/apps/basics/src/routes/query/__tests__.js
+++ b/packages/kit/test/apps/basics/src/routes/query/__tests__.js
@@ -6,12 +6,12 @@ export default function (test) {
 		{
 			description: 'exposes query string parameters',
 			search: '?foo=1',
-			expected: { foo: '1' }
+			expected: { foo: ['1'] }
 		},
 		{
 			description: 'value-less query parameter',
 			search: '?foo',
-			expected: { foo: '' }
+			expected: { foo: [''] }
 		},
 		{
 			description: 'duplicated query parameter',
@@ -21,7 +21,7 @@ export default function (test) {
 		{
 			description: 'encoded query parameter',
 			search: '?key=%26a=b',
-			expected: { key: '&a=b' }
+			expected: { key: ['&a=b'] }
 		}
 	];
 
@@ -37,7 +37,7 @@ export default function (test) {
 	test('updates page on client-side nav', '/query/echo?foo=1', async ({ page, clicknav }) => {
 		await clicknav('[href="/query/echo?bar=2"]');
 
-		const json = JSON.stringify({ bar: '2' });
+		const json = JSON.stringify({ bar: ['2'] });
 
 		assert.equal(await page.textContent('#one'), json);
 		assert.equal(await page.textContent('#two'), json);
diff --git a/packages/kit/test/apps/basics/src/routes/query/echo.svelte b/packages/kit/test/apps/basics/src/routes/query/echo.svelte
index cd6ac00c700b..c69b7aa99e07 100644
--- a/packages/kit/test/apps/basics/src/routes/query/echo.svelte
+++ b/packages/kit/test/apps/basics/src/routes/query/echo.svelte
@@ -1,22 +1,20 @@
 <script context="module">
+	/** @typedef {Record<string, string[]>} Query */
+
+	/** @param {URLSearchParams} query */
 	function to_pojo(query) {
+		/** @type {Query}*/
 		const values = {};
 
 		query.forEach((value, key) => {
-			if (key in values) {
-				if (!Array.isArray(values[key])) {
-					values[key] = [values[key]];
-				}
-
-				values[key].push(value);
-			} else {
-				values[key] = value;
-			}
+			if (!(key in values)) values[key] = [];
+			values[key].push(value);
 		});
 
 		return values;
 	}
 
+	/** @type {import('@sveltejs/kit').Load} */
 	export function load({ page }) {
 		return {
 			props: {
@@ -29,10 +27,11 @@
 <script>
 	import { page } from '$app/stores';
 
+	/** @type {Query}*/
 	export let values;
 </script>
 
 <pre id="one">{JSON.stringify(values)}</pre>
 <pre id="two">{JSON.stringify(to_pojo($page.query))}</pre>
 
-<a href="/query/echo?bar=2">?bar=2</a>
\ No newline at end of file
+<a href="/query/echo?bar=2">?bar=2</a>
diff --git a/packages/kit/test/apps/basics/src/routes/routing/_error.svelte b/packages/kit/test/apps/basics/src/routes/routing/_error.svelte
index a8fca7e98b2a..3fe9a7b2b42c 100644
--- a/packages/kit/test/apps/basics/src/routes/routing/_error.svelte
+++ b/packages/kit/test/apps/basics/src/routes/routing/_error.svelte
@@ -1,5 +1,8 @@
 <script>
+	/** @type {number} */
 	export let status;
+
+	/** @type {Error} */
 	export let error;
 </script>
 
diff --git a/packages/kit/test/apps/basics/src/routes/routing/b/index.svelte b/packages/kit/test/apps/basics/src/routes/routing/b/index.svelte
index c665c7d1f561..ff012dd1c220 100644
--- a/packages/kit/test/apps/basics/src/routes/routing/b/index.svelte
+++ b/packages/kit/test/apps/basics/src/routes/routing/b/index.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load({ fetch }) {
 		const letter = await fetch('/routing/b.json').then(r => r.json());
 		return { props: { letter } };
@@ -6,7 +7,8 @@
 </script>
 
 <script>
+	/** @type {string} */
 	export let letter;
 </script>
 
-<h1>{letter}</h1>
\ No newline at end of file
+<h1>{letter}</h1>
diff --git a/packages/kit/test/apps/basics/src/routes/routing/rest/[...rest]/deep.svelte b/packages/kit/test/apps/basics/src/routes/routing/rest/[...rest]/deep.svelte
index 8b66903560f3..e0c6633cd2e4 100644
--- a/packages/kit/test/apps/basics/src/routes/routing/rest/[...rest]/deep.svelte
+++ b/packages/kit/test/apps/basics/src/routes/routing/rest/[...rest]/deep.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export function load({ page }) {
 		const { rest } = page.params;
 		return { props: { rest } };
@@ -7,6 +8,8 @@
 
 <script>
 	import { page } from '$app/stores';
+
+	/** @type {string} */
 	export let rest;
 </script>
 
diff --git a/packages/kit/test/apps/basics/src/routes/routing/rest/[...rest]/index.svelte b/packages/kit/test/apps/basics/src/routes/routing/rest/[...rest]/index.svelte
index fd675440f1ae..d15f8691a962 100644
--- a/packages/kit/test/apps/basics/src/routes/routing/rest/[...rest]/index.svelte
+++ b/packages/kit/test/apps/basics/src/routes/routing/rest/[...rest]/index.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export function load({ page }) {
 		const { rest } = page.params;
 		return { props: { rest } };
@@ -7,6 +8,8 @@
 
 <script>
 	import { page } from '$app/stores';
+
+	/** @type {string} */
 	export let rest;
 </script>
 
diff --git a/packages/kit/test/apps/basics/src/routes/routing/shadow/action.svelte b/packages/kit/test/apps/basics/src/routes/routing/shadow/action.svelte
index 8fdd433aae2f..a5e8e45ff167 100644
--- a/packages/kit/test/apps/basics/src/routes/routing/shadow/action.svelte
+++ b/packages/kit/test/apps/basics/src/routes/routing/shadow/action.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load({ fetch }) {
 		const res = await fetch('/routing/shadow/action');
 		const { random } = await res.json();
@@ -12,7 +13,8 @@
 </script>
 
 <script>
+	/** @type {number} */
 	export let random;
 </script>
 
-<h1>{random}</h1>
\ No newline at end of file
+<h1>{random}</h1>
diff --git a/packages/kit/test/apps/basics/src/routes/routing/skipped/[one]/[two].svelte b/packages/kit/test/apps/basics/src/routes/routing/skipped/[one]/[two].svelte
index 2d7097e8f165..29b4effd51d1 100644
--- a/packages/kit/test/apps/basics/src/routes/routing/skipped/[one]/[two].svelte
+++ b/packages/kit/test/apps/basics/src/routes/routing/skipped/[one]/[two].svelte
@@ -1,11 +1,15 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export function load({ page }) {
 		return { props: page.params };
 	}
 </script>
 
 <script>
+	/** @type {string} */
 	export let one;
+
+	/** @type {string} */
 	export let two;
 </script>
 
diff --git a/packages/kit/test/apps/basics/src/routes/session/index.svelte b/packages/kit/test/apps/basics/src/routes/session/index.svelte
index 4a26c92ac2c3..5ac150066b61 100644
--- a/packages/kit/test/apps/basics/src/routes/session/index.svelte
+++ b/packages/kit/test/apps/basics/src/routes/session/index.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export function load({ session }) {
 		return {
 			props: {
@@ -10,10 +11,12 @@
 
 <script>
 	import { session } from '$app/stores';
+
+	/** @type {number} */
 	export let answer;
 </script>
 
 <h1>answer via props: {answer}</h1>
 <h2>answer via store: {$session.answer}</h2>
 
-<button on:click={() => $session.answer += 1}>+1</button>
\ No newline at end of file
+<button on:click={() => $session.answer += 1}>+1</button>
diff --git a/packages/kit/test/apps/basics/src/routes/store/__tests__.js b/packages/kit/test/apps/basics/src/routes/store/__tests__.js
index 398c3b58c2fa..e04e82f63cbe 100644
--- a/packages/kit/test/apps/basics/src/routes/store/__tests__.js
+++ b/packages/kit/test/apps/basics/src/routes/store/__tests__.js
@@ -10,7 +10,6 @@ export default function (test) {
 		assert.equal(await page.textContent('h1'), 'Result');
 		assert.equal(await page.textContent('h2'), js ? 'Calls: 1' : 'Calls: 0');
 
-		// @ts-expect-error
 		const oops = await page.evaluate(() => window.oops);
 		assert.ok(!oops, oops);
 	});
diff --git a/packages/kit/test/apps/basics/src/routes/store/index.svelte b/packages/kit/test/apps/basics/src/routes/store/index.svelte
index f2df438133bb..66f5cdcea714 100644
--- a/packages/kit/test/apps/basics/src/routes/store/index.svelte
+++ b/packages/kit/test/apps/basics/src/routes/store/index.svelte
@@ -10,7 +10,7 @@
 		session.set(calls);
 	});
 
-	const unsubscribe = page.subscribe(($page) => {
+	const unsubscribe = page.subscribe(() => {
 		calls++;
 		session.set(calls);
 	});
diff --git a/packages/kit/test/apps/basics/src/routes/store/navigating/b.svelte b/packages/kit/test/apps/basics/src/routes/store/navigating/b.svelte
index 50f0a6853668..23aaf604c196 100644
--- a/packages/kit/test/apps/basics/src/routes/store/navigating/b.svelte
+++ b/packages/kit/test/apps/basics/src/routes/store/navigating/b.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load() {
 		await new Promise((f) => setTimeout(f, 50));
 		return {};
diff --git a/packages/kit/test/apps/basics/src/routes/unsafe-replacement/index.svelte b/packages/kit/test/apps/basics/src/routes/unsafe-replacement/index.svelte
index 99229e1bfec6..30072a1093a8 100644
--- a/packages/kit/test/apps/basics/src/routes/unsafe-replacement/index.svelte
+++ b/packages/kit/test/apps/basics/src/routes/unsafe-replacement/index.svelte
@@ -5,7 +5,8 @@
 </script>
 
 <script>
+	/** @type {string} */
 	export let escape;
 </script>
 
-$& {escape}
\ No newline at end of file
+$& {escape}
diff --git a/packages/kit/test/apps/custom-extension/src/routes/$error.svelte b/packages/kit/test/apps/custom-extension/src/routes/$error.svelte
deleted file mode 100644
index 8276072576fe..000000000000
--- a/packages/kit/test/apps/custom-extension/src/routes/$error.svelte
+++ /dev/null
@@ -1,37 +0,0 @@
-<script>
-	export let status;
-	export let error;
-</script>
-
-<svelte:head>
-	<title>Custom error page: {error.message}</title>
-</svelte:head>
-
-<h1>{status}</h1>
-
-<p id="message">This is your custom error page saying: "<b>{error.message}</b>"</p>
-
-<pre id="stack">{error.stack}</pre>
-
-<style>
-	h1,
-	p {
-		margin: 0 auto;
-	}
-
-	h1 {
-		font-size: 2.8em;
-		font-weight: 700;
-		margin: 0 0 0.5em 0;
-	}
-
-	p {
-		margin: 1em auto;
-	}
-
-	@media (min-width: 480px) {
-		h1 {
-			font-size: 4em;
-		}
-	}
-</style>
diff --git a/packages/kit/test/apps/options/source/pages/host/index.svelte b/packages/kit/test/apps/options/source/pages/host/index.svelte
index 2bc23da4e386..b1078fb1e0c5 100644
--- a/packages/kit/test/apps/options/source/pages/host/index.svelte
+++ b/packages/kit/test/apps/options/source/pages/host/index.svelte
@@ -1,4 +1,5 @@
 <script context="module">
+	/** @type {import('@sveltejs/kit').Load} */
 	export async function load({ page, fetch }) {
 		const res = await fetch('/host.json');
 		const data = await res.json();
@@ -15,10 +16,13 @@
 <script>
 	import { page } from '$app/stores';
 
+	/** @type {string} */
 	export let host;
+
+	/** @type {any} */
 	export let data;
 </script>
 
 <p data-source="load">{host}</p>
 <p data-source="store">{$page.host}</p>
-<p data-source="endpoint">{data.host}</p>
\ No newline at end of file
+<p data-source="endpoint">{data.host}</p>
diff --git a/packages/kit/test/types.d.ts b/packages/kit/test/types.d.ts
index 68edc27e637b..5214190d8dac 100644
--- a/packages/kit/test/types.d.ts
+++ b/packages/kit/test/types.d.ts
@@ -1,3 +1,5 @@
+/// <reference types="@sveltejs/kit" />
+
 import { Page, Response as PlaywrightResponse } from 'playwright-chromium';
 import { RequestInfo, RequestInit, Response as NodeFetchResponse } from 'node-fetch';
 
diff --git a/packages/kit/types/index.d.ts b/packages/kit/types/index.d.ts
index 64a276229c7c..7726c26d9ba4 100644
--- a/packages/kit/types/index.d.ts
+++ b/packages/kit/types/index.d.ts
@@ -1,3 +1,6 @@
+/// <reference types="svelte" />
+/// <reference types="vite/client" />
+
 import './ambient-modules';
 
 export { Adapter, AdapterUtils, Config } from './config';
diff --git a/packages/kit/types/internal.d.ts b/packages/kit/types/internal.d.ts
index e20616ef9463..7f5c4c9b53b2 100644
--- a/packages/kit/types/internal.d.ts
+++ b/packages/kit/types/internal.d.ts
@@ -2,12 +2,6 @@ import { Load } from './page';
 import { Incoming, GetSession, Handle } from './hooks';
 import { RequestHandler, ServerResponse } from './endpoint';
 
-declare global {
-	interface ImportMeta {
-		env: Record<string, string>;
-	}
-}
-
 type PageId = string;
 
 export type Logger = {
@@ -201,3 +195,12 @@ export type BuildData = {
 	static: string[];
 	entries: string[];
 };
+
+export type NormalizedLoadOutput = {
+	status?: number;
+	error?: Error;
+	redirect?: string;
+	props?: Record<string, any> | Promise<Record<string, any>>;
+	context?: Record<string, any>;
+	maxage?: number;
+};
diff --git a/packages/kit/types/page.d.ts b/packages/kit/types/page.d.ts
index 072f5d420819..967439ddac1b 100644
--- a/packages/kit/types/page.d.ts
+++ b/packages/kit/types/page.d.ts
@@ -12,7 +12,7 @@ export type ErrorLoadInput = LoadInput & {
 
 export type LoadOutput = {
 	status?: number;
-	error?: Error;
+	error?: string | Error;
 	redirect?: string;
 	props?: Record<string, any> | Promise<Record<string, any>>;
 	context?: Record<string, any>;
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 1cfb36012c73..cf5040d44a47 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -187,7 +187,7 @@ importers:
       '@lukeed/uuid': 2.0.0
       cookie: 0.4.1
     devDependencies:
-      '@sveltejs/adapter-cloudflare-workers': 0.0.2-next.6
+      '@sveltejs/adapter-cloudflare-workers': link:../../../adapter-cloudflare-workers
       '@sveltejs/adapter-netlify': link:../../../adapter-netlify
       '@sveltejs/adapter-vercel': link:../../../adapter-vercel
       '@sveltejs/kit': link:../../../kit
@@ -203,6 +203,7 @@ importers:
       '@sveltejs/vite-plugin-svelte': ^1.0.0-next.9
       '@types/amphtml-validator': ^1.0.1
       '@types/cookie': ^0.4.0
+      '@types/marked': ^2.0.2
       '@types/mime': ^2.0.3
       '@types/node': ^14.14.43
       '@types/rimraf': ^3.0.0
@@ -222,6 +223,7 @@ importers:
       selfsigned: ^1.10.11
       sirv: ^1.0.11
       svelte: ^3.38.2
+      svelte-check: ^1.5.2
       tiny-glob: ^0.2.8
       typescript: ^4.2.4
       uvu: ^0.5.1
@@ -235,6 +237,7 @@ importers:
       '@sveltejs/kit': 'link:'
       '@types/amphtml-validator': 1.0.1
       '@types/cookie': 0.4.0
+      '@types/marked': 2.0.2
       '@types/mime': 2.0.3
       '@types/node': 14.14.43
       '@types/rimraf': 3.0.0
@@ -252,6 +255,7 @@ importers:
       selfsigned: 1.10.11
       sirv: 1.0.11
       svelte: 3.38.2
+      svelte-check: 1.5.2_svelte@3.38.2
       tiny-glob: 0.2.8
       typescript: 4.2.4
       uvu: 0.5.1
@@ -627,13 +631,6 @@ packages:
       rollup: 2.47.0
     dev: false
 
-  /@sveltejs/adapter-cloudflare-workers/0.0.2-next.6:
-    resolution: {integrity: sha512-GmNh88nFaLUYmHWrmOCy074PBoHhB9UJDSOLXY47sphNzRiqYEpb3Jqzsb3KH6umjbFZMWWykjm6mqnKubHeYA==}
-    dependencies:
-      esbuild: 0.11.18
-      toml: 3.0.0
-    dev: true
-
   /@sveltejs/vite-plugin-svelte/1.0.0-next.9_e199ea43849c994a9b29d0b980598eb5:
     resolution: {integrity: sha512-ySB/GJsZV3h3jqjq5WIiaxVFkJK6vqtG9gS7Iw6SfUH9ZiFNw5JjQF69g68j9cNep3q4yRIYiG5/pI3YIdXEuA==}
     engines: {node: '>=12.0.0'}
@@ -697,6 +694,10 @@ packages:
     resolution: {integrity: sha1-7ihweulOEdK4J7y+UnC86n8+ce4=}
     dev: true
 
+  /@types/marked/2.0.2:
+    resolution: {integrity: sha512-P4zanhCQKs4tiWPPBGpB7lHflgFCP9DFGNI5YtpW9MALKoy2qs9rHNWJ+z55cegD9uCfnmsKuaosq9FNvbxrOw==}
+    dev: true
+
   /@types/mime/2.0.3:
     resolution: {integrity: sha512-Jus9s4CDbqwocc5pOAnh8ShfrnMcPHuJYzVcSUU7lrh8Ni5HuIqX3oilL86p3dlTrk0LzHRCgA/GQ7uNCw6l2Q==}
     dev: true
@@ -981,6 +982,14 @@ packages:
     resolution: {integrity: sha1-q8av7tzqUugJzcA3au0845Y10X8=}
     dev: true
 
+  /anymatch/3.1.2:
+    resolution: {integrity: sha512-P43ePfOAIupkguHUycrc4qJ9kz8ZiuOUijaETwX7THt0Y/GNK7v0aa8rY816xWjZ7rJdA5XdMcpVFTKMq+RvWg==}
+    engines: {node: '>= 8'}
+    dependencies:
+      normalize-path: 3.0.0
+      picomatch: 2.2.3
+    dev: true
+
   /argparse/1.0.10:
     resolution: {integrity: sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==}
     dependencies:
@@ -1037,6 +1046,11 @@ packages:
       is-windows: 1.0.2
     dev: true
 
+  /binary-extensions/2.2.0:
+    resolution: {integrity: sha512-jDctJ/IVQbZoJykoeHbhXpOlNBqGNcwXJKJog42E5HDPUwQTSdjCHdihjj0DlnheQ7blbT6dHOafNAiS8ooQKA==}
+    engines: {node: '>=8'}
+    dev: true
+
   /boxen/1.3.0:
     resolution: {integrity: sha512-TNPjfTr432qx7yOjQyaXm3dSR0MH9vXp7eT1BFSl/C51g+EFnOR9hTg1IreahGBmDNCehscshe45f+C1TBZbLw==}
     engines: {node: '>=4'}
@@ -1167,6 +1181,21 @@ packages:
     engines: {node: '>=8'}
     dev: false
 
+  /chokidar/3.5.1:
+    resolution: {integrity: sha512-9+s+Od+W0VJJzawDma/gvBNQqkTiqYTWLuZoyAsivsI4AaWTCzHG06/TMjsf1cYe9Cb97UCEhjz7HvnPk2p/tw==}
+    engines: {node: '>= 8.10.0'}
+    dependencies:
+      anymatch: 3.1.2
+      braces: 3.0.2
+      glob-parent: 5.1.2
+      is-binary-path: 2.1.0
+      is-glob: 4.0.1
+      normalize-path: 3.0.0
+      readdirp: 3.5.0
+    optionalDependencies:
+      fsevents: 2.3.2
+    dev: true
+
   /ci-info/2.0.0:
     resolution: {integrity: sha512-5tK7EtrZ0N+OLFMthtqOj4fI2Jeb88C4CAZPu25LDVUgXJ0A3Js4PMGqrn0JU1W0Mh1/Z8wZzYPxqUrXeBboCQ==}
     dev: true
@@ -1490,6 +1519,7 @@ packages:
     resolution: {integrity: sha512-KD7v4N9b5B8bxPUNn/3GA9r0HWo4nJk3iwjZ+2zG1ffg+r8ig+wqj7sW6zgI6Sn4/B2FnbzqWxcAokAGGM5zwQ==}
     hasBin: true
     requiresBuild: true
+    dev: false
 
   /esbuild/0.9.7:
     resolution: {integrity: sha512-VtUf6aQ89VTmMLKrWHYG50uByMF4JQlVysb8dmg6cOgW8JnFCipmz7p+HNBl+RR3LLCuBxFGVauAe2wfnF9bLg==}
@@ -2068,6 +2098,13 @@ packages:
     resolution: {integrity: sha512-J0ELF4yHFxHy0cmSxZuheDOz2luOdVvqjwmEcj8H/L1JHeuEDSDbeRP+Dk9kFVk5RTFzbucJ2Kb9F7ixY2QaCg==}
     dev: true
 
+  /is-binary-path/2.1.0:
+    resolution: {integrity: sha512-ZMERYes6pDydyuGidse7OsHxtbI7WVeUEozgR/g7rd0xUimYNlvZRE/K2MgZTjWy725IfelLeVcEM97mmtRGXw==}
+    engines: {node: '>=8'}
+    dependencies:
+      binary-extensions: 2.2.0
+    dev: true
+
   /is-boolean-object/1.1.0:
     resolution: {integrity: sha512-a7Uprx8UtD+HWdyYwnD1+ExtTgqQtD2k/1yJgtXP6wnMm8byhkoTZRl+95LLThpzNZJ5aEvi46cdH+ayMFRwmA==}
     engines: {node: '>= 0.4'}
@@ -2538,6 +2575,11 @@ packages:
       validate-npm-package-license: 3.0.4
     dev: true
 
+  /normalize-path/3.0.0:
+    resolution: {integrity: sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==}
+    engines: {node: '>=0.10.0'}
+    dev: true
+
   /npm-run-path/2.0.2:
     resolution: {integrity: sha1-NakjLfo11wZ7TLLd8jV7GHFTbF8=}
     engines: {node: '>=4'}
@@ -2973,6 +3015,13 @@ packages:
       strip-bom: 3.0.0
     dev: true
 
+  /readdirp/3.5.0:
+    resolution: {integrity: sha512-cMhu7c/8rdhkHXWsY+osBhfSy0JikwpHK/5+imo+LpeasTF8ouErHrlYkwT0++njiyuDvc7OFY5T3ukvZ8qmFQ==}
+    engines: {node: '>=8.10.0'}
+    dependencies:
+      picomatch: 2.2.3
+    dev: true
+
   /redent/3.0.0:
     resolution: {integrity: sha512-6tDA8g98We0zd0GvVeMT9arEOnTw9qM03L9cJXaCjrip1OO764RDBLBfrB4cwzNGDj5OA5ioymC9GkizgWJDUg==}
     engines: {node: '>=8'}
@@ -3327,6 +3376,34 @@ packages:
     dependencies:
       has-flag: 4.0.0
 
+  /svelte-check/1.5.2_svelte@3.38.2:
+    resolution: {integrity: sha512-x9Pc13r814TKrMXY70IyqDEmPzuFiqNSpBmsrMKrFpi995MiG+lmqYnyw8iQC+DGh7H3eUt3LIFXbNd396XIFw==}
+    hasBin: true
+    peerDependencies:
+      svelte: ^3.24.0
+    dependencies:
+      chalk: 4.1.1
+      chokidar: 3.5.1
+      glob: 7.1.6
+      import-fresh: 3.3.0
+      minimist: 1.2.5
+      source-map: 0.7.3
+      svelte: 3.38.2
+      svelte-preprocess: 4.7.3_svelte@3.38.2+typescript@4.2.4
+      typescript: 4.2.4
+    transitivePeerDependencies:
+      - '@babel/core'
+      - coffeescript
+      - less
+      - node-sass
+      - postcss
+      - postcss-load-config
+      - pug
+      - sass
+      - stylus
+      - sugarss
+    dev: true
+
   /svelte-hmr/0.14.3_svelte@3.38.2:
     resolution: {integrity: sha512-N56xX405zLMw2tpGHKRx5h+kmdeZwxI21pvyC6OyBHJDCF6DlwWBm9TifdQmSD4dloWSmpDPzHWYa3CSjfopUg==}
     peerDependencies:
@@ -3511,6 +3588,7 @@ packages:
 
   /toml/3.0.0:
     resolution: {integrity: sha512-y/mWCZinnvxjTKYhJ+pYxwD0mRLVvOtdS2Awbgxln6iEnt4rk0yBxeSBHkGJcPucRiG0e55mwWp+g/05rsrd6w==}
+    dev: false
 
   /totalist/1.1.0:
     resolution: {integrity: sha512-gduQwd1rOdDMGxFG1gEvhV88Oirdo2p+KjoYFU7k2g+i7n6AFFbDQ5kMPUsW0pNbfQsB/cwXvT1i4Bue0s9g5g==}