diff --git a/packages/astro/src/vite-plugin-astro-server/index.ts b/packages/astro/src/vite-plugin-astro-server/index.ts
index ba5b54813..f6da58546 100644
--- a/packages/astro/src/vite-plugin-astro-server/index.ts
+++ b/packages/astro/src/vite-plugin-astro-server/index.ts
@@ -339,18 +339,18 @@ async function handleRequest(
  * Vite HMR sends requests for new CSS and those get returned as JS, but we want it to be CSS
  * since they are inside of a link tag for Astro.
  */
-const forceTextCSSForStylesMiddleware: vite.Connect.NextHandleFunction = function(req, res, next) {
-	if(req.url) {
+const forceTextCSSForStylesMiddleware: vite.Connect.NextHandleFunction = function (req, res, next) {
+	if (req.url) {
 		// We are just using this to parse the URL to get the search params object
 		// so the second arg here doesn't matter
 		const url = new URL(req.url, 'https://astro.build');
 		// lang.css is a search param that exists on Astro, Svelte, and Vue components.
 		// We only want to override for astro files.
-		if(url.searchParams.has('astro') && url.searchParams.has('lang.css')) {
+		if (url.searchParams.has('astro') && url.searchParams.has('lang.css')) {
 			// Override setHeader so we can set the correct content-type for this request.
 			const setHeader = res.setHeader;
-			res.setHeader = function(key, value) {
-				if(key.toLowerCase() === 'content-type') {
+			res.setHeader = function (key, value) {
+				if (key.toLowerCase() === 'content-type') {
 					return setHeader.call(this, key, 'text/css');
 				}
 				return setHeader.apply(this, [key, value]);
@@ -381,7 +381,10 @@ export default function createPlugin({ config, logging }: AstroPluginOptions): v
 				removeViteHttpMiddleware(viteServer.middlewares);
 
 				// Push this middleware to the front of the stack so that it can intercept responses.
-				viteServer.middlewares.stack.unshift({ route: '', handle: forceTextCSSForStylesMiddleware });
+				viteServer.middlewares.stack.unshift({
+					route: '',
+					handle: forceTextCSSForStylesMiddleware,
+				});
 				viteServer.middlewares.use(async (req, res) => {
 					if (!req.url || !req.method) {
 						throw new Error('Incomplete request');
diff --git a/packages/astro/test/hmr-css.test.js b/packages/astro/test/hmr-css.test.js
index 2705d8fd1..f8f741904 100644
--- a/packages/astro/test/hmr-css.test.js
+++ b/packages/astro/test/hmr-css.test.js
@@ -22,7 +22,9 @@ describe('HMR - CSS', () => {
 	});
 
 	it('Timestamp URL used by Vite gets the right mime type', async () => {
-		let res = await fixture.fetch('/src/pages/index.astro?astro=&type=style&index=0&lang.css=&t=1653657441095');
+		let res = await fixture.fetch(
+			'/src/pages/index.astro?astro=&type=style&index=0&lang.css=&t=1653657441095'
+		);
 		let headers = res.headers;
 		expect(headers.get('content-type')).to.equal('text/css');
 	});
diff --git a/packages/integrations/lit/client-shim.js b/packages/integrations/lit/client-shim.js
index c3ac563ca..ca97b92cc 100644
--- a/packages/integrations/lit/client-shim.js
+++ b/packages/integrations/lit/client-shim.js
@@ -2,7 +2,9 @@ async function polyfill() {
 	const { hydrateShadowRoots } = await import(
 		'@webcomponents/template-shadowroot/template-shadowroot.js'
 	);
-	window.addEventListener('DOMContentLoaded', () => hydrateShadowRoots(document.body), { once: true });
+	window.addEventListener('DOMContentLoaded', () => hydrateShadowRoots(document.body), {
+		once: true,
+	});
 }
 
 const polyfillCheckEl = new DOMParser()
diff --git a/packages/integrations/lit/client-shim.min.js b/packages/integrations/lit/client-shim.min.js
index 0882a78b3..afae053ac 100644
--- a/packages/integrations/lit/client-shim.min.js
+++ b/packages/integrations/lit/client-shim.min.js
@@ -77,7 +77,7 @@ var S = i(() => {
 });
 async function g() {
 	let { hydrateShadowRoots: t } = await Promise.resolve().then(() => (S(), v));
-	window.addEventListener('DOMContentLoaded', () => t(document.body),{once:true});
+	window.addEventListener('DOMContentLoaded', () => t(document.body), { once: true });
 }
 var x = new DOMParser()
 	.parseFromString('<p><template shadowroot="open"></template></p>', 'text/html', {