diff --git a/packages/adapter-cloudflare/.gitignore b/packages/adapter-cloudflare/.gitignore
index e87415077413..beb15cd7fa9a 100644
--- a/packages/adapter-cloudflare/.gitignore
+++ b/packages/adapter-cloudflare/.gitignore
@@ -1,3 +1 @@
-.DS_Store
-node_modules
-target
\ No newline at end of file
+/files
\ No newline at end of file
diff --git a/packages/adapter-cloudflare/index.js b/packages/adapter-cloudflare/index.js
index f284cd9fac03..d79e65807257 100644
--- a/packages/adapter-cloudflare/index.js
+++ b/packages/adapter-cloudflare/index.js
@@ -29,7 +29,7 @@ export default function (options = {}) {
 				})};\n\nexport const prerendered = new Set(${JSON.stringify(builder.prerendered.paths)});\n`
 			);
 
-			builder.copy(`${files}/worker.ts`, `${tmp}/_worker.ts`, {
+			builder.copy(`${files}/worker.js`, `${tmp}/_worker.js`, {
 				replace: {
 					SERVER: `${relativePath}/index.js`,
 					MANIFEST: './manifest.js'
@@ -40,7 +40,7 @@ export default function (options = {}) {
 				target: 'es2020',
 				platform: 'browser',
 				...options,
-				entryPoints: [`${tmp}/_worker.ts`],
+				entryPoints: [`${tmp}/_worker.js`],
 				outfile: `${dest}/_worker.js`,
 				allowOverwrite: true,
 				format: 'esm',
diff --git a/packages/adapter-cloudflare/package.json b/packages/adapter-cloudflare/package.json
index f29a01cdda2f..245cf859ec6d 100644
--- a/packages/adapter-cloudflare/package.json
+++ b/packages/adapter-cloudflare/package.json
@@ -23,10 +23,12 @@
 	],
 	"main": "index.js",
 	"scripts": {
+		"build": "esbuild src/worker.ts --bundle --outfile=files/worker.js --external:SERVER --external:MANIFEST --format=esm",
 		"lint": "eslint --ignore-path .gitignore \"**/*.{ts,js,svelte}\" && npm run check-format",
 		"format": "npm run check-format -- --write",
 		"check": "tsc --skipLibCheck",
-		"check-format": "prettier --check . --config ../../.prettierrc --ignore-path .gitignore"
+		"check-format": "prettier --check . --config ../../.prettierrc --ignore-path .gitignore",
+		"prepublishOnly": "npm run build"
 	},
 	"dependencies": {
 		"esbuild": "^0.14.21",
diff --git a/packages/adapter-cloudflare/files/worker.ts b/packages/adapter-cloudflare/src/worker.ts
similarity index 100%
rename from packages/adapter-cloudflare/files/worker.ts
rename to packages/adapter-cloudflare/src/worker.ts
diff --git a/packages/adapter-cloudflare/tsconfig.json b/packages/adapter-cloudflare/tsconfig.json
index 502209d0b668..d90692441a52 100644
--- a/packages/adapter-cloudflare/tsconfig.json
+++ b/packages/adapter-cloudflare/tsconfig.json
@@ -11,5 +11,5 @@
 			"@sveltejs/kit": ["../kit/types/index"]
 		}
 	},
-	"include": ["**/*.js", "ambient.d.ts", "files/worker.ts"]
+	"include": ["index.js", "ambient.d.ts", "src/worker.ts"]
 }