diff --git a/.changeset/stale-books-flash.md b/.changeset/stale-books-flash.md
new file mode 100644
index 000000000000..1c612e23d9f3
--- /dev/null
+++ b/.changeset/stale-books-flash.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/adapter-node': patch
+---
+
+support all esbuild build options
diff --git a/packages/adapter-node/README.md b/packages/adapter-node/README.md
index ec1ec3bae1a1..3fe2e26f23ab 100644
--- a/packages/adapter-node/README.md
+++ b/packages/adapter-node/README.md
@@ -13,9 +13,19 @@ import adapter from '@sveltejs/adapter-node';
 export default {
 	kit: {
 		adapter: adapter({
-			// default options are shown
+			// default options are shown below
 			out: 'build',
-			precompress: false
+			precompress: false,
+			esbuildOptions: {
+				outdir: out,
+				bundle: true,
+				format: 'esm',
+				platform: 'node',
+				target: 'node12',
+				external: [
+					/* package.json#dependencies */
+				]
+			}
 		})
 	}
 };
@@ -31,6 +41,21 @@ The directory to build the server to. It defaults to `build` — i.e. `node buil
 
 Enables precompressing using gzip and brotli for assets and prerendered pages. It defaults to `false`.
 
+### esbuildOptions
+
+Any custom [esbuild build](https://esbuild.github.io/api/#build-api) options. It defaults to:
+
+```js
+{
+	outdir: out /* = 'build' */, // Unless a outfile is specified
+	bundle: true,
+	format: 'esm',
+	platform: 'node',
+	target: 'node12',
+	external: [ /* package.json#dependencies */ ]
+}
+```
+
 ## Environment variables
 
 By default, the server will accept connections on `0.0.0.0` using port 3000. These can be customised with the `PORT` and `HOST` environment variables:
diff --git a/packages/adapter-node/index.d.ts b/packages/adapter-node/index.d.ts
index 2132e79d9a73..aaa150f5ff2a 100644
--- a/packages/adapter-node/index.d.ts
+++ b/packages/adapter-node/index.d.ts
@@ -1,6 +1,7 @@
 declare function plugin(options?: {
 	out?: string;
 	precompress?: boolean;
+	esbuildOptions?: import('esbuild').BuildOptions;
 }): import('@sveltejs/kit').Adapter;
 
 export = plugin;
diff --git a/packages/adapter-node/index.js b/packages/adapter-node/index.js
index 095109c10572..d62a8674ab8c 100644
--- a/packages/adapter-node/index.js
+++ b/packages/adapter-node/index.js
@@ -11,11 +11,26 @@ const pipe = promisify(pipeline);
 
 /**
  * @param {{
- *   out?: string;
- *   precompress?: boolean
+ *   out?: string,
+ *   precompress?: boolean,
+ *   esbuildOptions?: import('esbuild').BuildOptions
  * }} options
  */
-export default function ({ out = 'build', precompress } = {}) {
+export default function ({
+	out = 'build',
+	precompress,
+	esbuildOptions: {
+		outfile,
+		outdir = typeof outfile === 'undefined' ? out : undefined,
+		bundle = true,
+		format = 'esm',
+		platform = 'node',
+		target = 'node12',
+		external = Object.keys(JSON.parse(readFileSync('package.json', 'utf8')).dependencies || {}),
+		entryPoints = ['.svelte-kit/node/index.js'],
+		...esbuildOptions
+	} = {}
+} = {}) {
 	/** @type {import('@sveltejs/kit').Adapter} */
 	const adapter = {
 		name: '@sveltejs/adapter-node',
@@ -35,14 +50,17 @@ export default function ({ out = 'build', precompress } = {}) {
 			const files = fileURLToPath(new URL('./files', import.meta.url));
 			utils.copy(files, '.svelte-kit/node');
 			await esbuild.build({
-				entryPoints: ['.svelte-kit/node/index.js'],
-				outfile: join(out, 'index.js'),
-				bundle: true,
-				external: Object.keys(JSON.parse(readFileSync('package.json', 'utf8')).dependencies || {}),
-				format: 'esm',
-				platform: 'node',
-				target: 'node12',
+				...esbuildOptions,
+				outdir,
+				outfile,
+				bundle,
+				format,
+				platform,
+				target,
+				external,
+				entryPoints,
 				define: {
+					...esbuildOptions.define,
 					esbuild_app_dir: '"' + config.kit.appDir + '"'
 				}
 			});