diff --git a/packages/adapter-netlify/src/index.ts b/packages/adapter-netlify/src/index.ts
index 825f6a3fad3b..4b4bec869ca3 100644
--- a/packages/adapter-netlify/src/index.ts
+++ b/packages/adapter-netlify/src/index.ts
@@ -1,7 +1,7 @@
 import { APIGatewayProxyHandler } from 'aws-lambda';
 import { URLSearchParams } from 'url';
 import { render } from '@sveltejs/app-utils/renderer';
-import type { PageComponentManifest, EndpointManifest } from '@sveltejs/app-utils';
+import type { PageComponentManifest, EndpointManifest, Method } from '@sveltejs/app-utils';
 
 const manifest = require('./manifest.js');
 const client = require('./client.json');
@@ -32,7 +32,7 @@ export const handler: APIGatewayProxyHandler = async (event) => {
 
 	const rendered = await render({
 		host: null, // TODO
-		method: httpMethod,
+		method: httpMethod as Method,
 		headers,
 		path,
 		query
@@ -44,7 +44,8 @@ export const handler: APIGatewayProxyHandler = async (event) => {
 		root,
 		setup,
 		load: (route: PageComponentManifest | EndpointManifest) => require(`./routes/${route.name}.js`),
-		dev: false
+		dev: false,
+		only_prerender: false
 	});
 
 	if (rendered) {
diff --git a/packages/adapter-node/src/index.ts b/packages/adapter-node/src/index.ts
index eb2ff083bff2..ce412b5c3653 100644
--- a/packages/adapter-node/src/index.ts
+++ b/packages/adapter-node/src/index.ts
@@ -4,7 +4,7 @@ import { parse, URLSearchParams } from 'url';
 import sirv from 'sirv';
 import { render } from '@sveltejs/app-utils/renderer';
 import { get_body } from '@sveltejs/app-utils/http';
-import type { PageComponentManifest, EndpointManifest } from '@sveltejs/app-utils';
+import type { PageComponentManifest, EndpointManifest, Method } from '@sveltejs/app-utils';
 
 const manifest = require('./manifest.js');
 const client = require('./client.json');
@@ -38,9 +38,9 @@ const server = http.createServer((req, res) => {
 
 				const rendered = await render({
 					host: null, // TODO
-					method: req.method,
-					headers: req.headers,
-					path: parsed.pathname,
+					method: req.method as Method,
+					headers: req.headers as Record<string, string>, // TODO: what about repeated headers, i.e. string[]
+					path: parsed.pathname as string,
 					body: await get_body(req),
 					query: new URLSearchParams(parsed.query || '')
 				}, {
@@ -51,7 +51,8 @@ const server = http.createServer((req, res) => {
 					root,
 					setup,
 					load: (route: PageComponentManifest | EndpointManifest) => require(`./routes/${route.name}.js`),
-					dev: false
+					dev: false,
+					only_prerender: false
 				});
 
 				if (rendered) {
diff --git a/packages/app-utils/.gitignore b/packages/app-utils/.gitignore
index 49f484d216de..cf0fd52baa08 100644
--- a/packages/app-utils/.gitignore
+++ b/packages/app-utils/.gitignore
@@ -6,3 +6,4 @@ node_modules
 /http
 /renderer
 /types
+/build
diff --git a/packages/app-utils/index.d.ts b/packages/app-utils/index.d.ts
index d87d2c1e3c1d..e42412c98224 100644
--- a/packages/app-utils/index.d.ts
+++ b/packages/app-utils/index.d.ts
@@ -6,5 +6,6 @@ export {
 	SSRComponentModule,
 	Page,
 	PageContext,
-	Query
+	Query,
+	Method
 } from './src/types';
diff --git a/packages/app-utils/package.json b/packages/app-utils/package.json
index 3c9d8e7142ab..96259ee52bb7 100644
--- a/packages/app-utils/package.json
+++ b/packages/app-utils/package.json
@@ -2,7 +2,7 @@
 	"name": "@sveltejs/app-utils",
 	"version": "0.0.17",
 	"scripts": {
-		"clean": "node rimraf.js common files http renderer",
+		"clean": "node rimraf.js common files http renderer types build",
 		"dev": "npm run clean && rollup -cw",
 		"build": "npm run clean && rollup -c",
 		"lint": "eslint --ignore-pattern node_modules/ --ignore-pattern dist/ --ignore-pattern files/ --ignore-pattern http/ --ignore-pattern renderer/ \"**/*.{ts,js,svelte}\" && npm run check-format",
diff --git a/packages/app-utils/rollup.config.js b/packages/app-utils/rollup.config.js
index d168036f4342..3259f0b711b7 100644
--- a/packages/app-utils/rollup.config.js
+++ b/packages/app-utils/rollup.config.js
@@ -1,6 +1,8 @@
 import { nodeResolve } from '@rollup/plugin-node-resolve';
 import typescript from 'rollup-plugin-typescript2';
 import pkg from './package.json';
+const fs = require('fs');
+const path = require('path');
 
 const input = {};
 Object.keys(pkg.exports).forEach(key => {
@@ -27,10 +29,27 @@ export default {
 	],
 	plugins: [
 		nodeResolve(),
-		typescript()
+		typescript({ useTsconfigDeclarationDir: true }),
+		{
+			name: 'copy-types',
+			resolveId: () => null,
+			load: () => null,
+			writeBundle: () => {
+				copyRecursiveSync('build/types', '.');
+				copyRecursiveSync('src/types', 'types');
+			}
+		}
 	],
-	external: [
-		...require('module').builtinModules,
-		...Object.keys(pkg.dependencies)
-	]
+	external: [...require('module').builtinModules, ...Object.keys(pkg.dependencies)]
 };
+
+function copyRecursiveSync(src, dest) {
+	if (fs.existsSync(src) && fs.statSync(src).isDirectory()) {
+		fs.mkdirSync(dest, { recursive: true });
+		fs.readdirSync(src).forEach(file =>
+			copyRecursiveSync(path.join(src, file), path.join(dest, file))
+		);
+	} else {
+		fs.copyFileSync(src, dest);
+	}
+}
diff --git a/packages/app-utils/src/types.d.ts b/packages/app-utils/src/types/index.d.ts
similarity index 94%
rename from packages/app-utils/src/types.d.ts
rename to packages/app-utils/src/types/index.d.ts
index 37111ca126f3..0c22834dbc60 100644
--- a/packages/app-utils/src/types.d.ts
+++ b/packages/app-utils/src/types/index.d.ts
@@ -1,5 +1,8 @@
 import { URLSearchParams } from 'url';
 
+// do not import this file from outside app-utils
+// these types are re-exported in /index.d.ts and should be imported from "@sveltejs/app-utils"
+
 export type Method = 'GET' | 'POST' | 'PUT' | 'DELETE' | 'HEAD' | 'OPTIONS';
 
 export type Headers = Record<string, string>;
@@ -8,7 +11,7 @@ export interface IncomingRequest {
 	host: string | null; // TODO is this actually necessary?
 	method: Method;
 	headers: Headers;
-	body: any; // TODO
+	body?: any; // TODO
 	path: string;
 	query: URLSearchParams;
 }
diff --git a/packages/app-utils/tsconfig.json b/packages/app-utils/tsconfig.json
index 038e74d8c623..566bd416e5d0 100644
--- a/packages/app-utils/tsconfig.json
+++ b/packages/app-utils/tsconfig.json
@@ -1,3 +1,8 @@
 {
 	"extends": "../../tsconfig.json",
+	"compilerOptions": {
+		"lib": ["es2020", "DOM"],
+		"declaration": true,
+		"declarationDir": "build/types",
+	}
 }
diff --git a/packages/kit/src/api/build/index.ts b/packages/kit/src/api/build/index.ts
index 1c5ae64b9b2e..02f9486cce7b 100644
--- a/packages/kit/src/api/build/index.ts
+++ b/packages/kit/src/api/build/index.ts
@@ -13,7 +13,6 @@ import { copy_assets } from '../utils';
 import { create_app } from '../../core/create_app';
 import { SvelteAppConfig } from '../../interfaces';
 import { css_injection } from './css_injection';
-import { EndpointManifest } from '@sveltejs/app-utils';
 
 const exec = promisify(child_process.exec);
 
diff --git a/packages/kit/src/api/dev/index.ts b/packages/kit/src/api/dev/index.ts
index ab8ed685f16f..0e7765e2b3cf 100644
--- a/packages/kit/src/api/dev/index.ts
+++ b/packages/kit/src/api/dev/index.ts
@@ -14,7 +14,7 @@ import { ManifestData, ReadyEvent } from '../../interfaces';
 import { mkdirp } from '@sveltejs/app-utils/files';
 import { render } from '@sveltejs/app-utils/renderer';
 import { get_body } from '@sveltejs/app-utils/http';
-import { SSRComponentModule, SetupModule } from '@sveltejs/app-utils';
+import { SSRComponentModule, SetupModule, Method } from '@sveltejs/app-utils';
 import { DevConfig, Loader } from './types';
 import { copy_assets } from '../utils';
 import { readFileSync } from 'fs';
@@ -157,8 +157,8 @@ class Watcher extends EventEmitter {
 
 				const rendered = await render({
 					host: req.headers.host,
-					headers: req.headers,
-					method: req.method,
+					headers: req.headers as Record<string, string>,
+					method: req.method as Method,
 					path: parsed.pathname,
 					query: new URLSearchParams(parsed.query),
 					body
@@ -170,11 +170,11 @@ class Watcher extends EventEmitter {
 						entry: 'main/runtime/navigation.js',
 						deps: {}
 					},
-					files: 'build',
 					dev: true,
 					root,
 					setup,
-					load: route => load(route.url.replace(/\.\w+$/, '.js')) // TODO is the replace still necessary?
+					load: route => load(route.url.replace(/\.\w+$/, '.js')), // TODO is the replace still necessary?
+					only_prerender: false
 				});
 
 				if (rendered) {