[breaking] do a single bundling with Vite removing esbuild

Author: benmccann

.changeset/tidy-pets-tan.md

@@ -0,0 +1,10 @@
+---
+'@sveltejs/adapter-cloudflare': patch
+'@sveltejs/adapter-cloudflare-workers': patch
+'@sveltejs/adapter-netlify': patch
+'@sveltejs/adapter-node': patch
+'@sveltejs/adapter-vercel': patch
+'@sveltejs/kit': patch
+---
+
+[breaking] do a single bundling with Vite making esbuild optional

documentation/docs/10-adapters.md

@@ -74,6 +74,7 @@ export default function (options) {
 	/** @type {import('@sveltejs/kit').Adapter} */
 	return {
 		name: 'adapter-package-name',
+		serverEntryPoint: 'adapter-package-name/entry',
 		async adapt({ utils, config }) {
 			// adapter implementation
 		}

documentation/docs/14-configuration.md

@@ -47,6 +47,7 @@ const config = {
 			onError: 'fail'
 		},
 		router: true,
+		serverEntryPoint: null,
 		serviceWorker: {
 			files: (filepath) => !/\.DS_STORE/.test(filepath)
 		},
@@ -195,6 +196,10 @@ See [Prerendering](#ssr-and-javascript-prerender). An object containing zero or
 
 Enables or disables the client-side [router](#ssr-and-javascript-router) app-wide.
 
+### serverEntryPoint
+
+A file path to a custom entry point for the server. Passed to `vite.build.rollupOptions.input`. See [the Rollup docs](https://rollupjs.org/guide/en/#input) for more info.
+
 ### serviceWorker
 
 An object containing zero or more of the following values:

examples/hn.svelte.dev/svelte.config.js

@@ -1,8 +1,8 @@
-import netlify from '@sveltejs/adapter-netlify';
+import adapter from '@sveltejs/adapter-netlify';
 
 export default {
 	kit: {
-		adapter: netlify(),
+		adapter: adapter(),
 		target: '#svelte'
 	}
 };

packages/adapter-cloudflare-workers/files/entry.js

@@ -1,5 +1,6 @@
-// TODO hardcoding the relative location makes this brittle
-import { init, render } from '../output/server/app.js';
+// $server-build doesn't exist until the app is built
+// @ts-expect-error
+import { init, render } from '$server-build';
 import { getAssetFromKV, NotFoundError } from '@cloudflare/kv-asset-handler';
 
 init();

packages/adapter-cloudflare-workers/index.js

@@ -12,6 +12,7 @@ import { fileURLToPath } from 'url';
 export default function (options) {
 	return {
 		name: '@sveltejs/adapter-cloudflare-workers',
+		serverEntryPoint: '@sveltejs/adapter-cloudflare-workers/entry',
 
 		async adapt({ utils }) {
 			const { site } = validate_config(utils);

packages/adapter-cloudflare-workers/package.json

@@ -12,6 +12,9 @@
 		".": {
 			"import": "./index.js"
 		},
+		"./entry": {
+			"import": "./files/entry.js"
+		},
 		"./package.json": "./package.json"
 	},
 	"main": "index.js",

packages/adapter-cloudflare/files/worker.js

@@ -1,5 +1,7 @@
 /* global ASSETS */
-import { init, render } from '../output/server/app.js';
+// $server-build doesn't exist until the app is built
+// @ts-expect-error
+import { init, render } from '$server-build';
 
 init();
 

packages/adapter-cloudflare/index.js

@@ -9,6 +9,7 @@ import * as esbuild from 'esbuild';
 export default function (options = {}) {
 	return {
 		name: '@sveltejs/adapter-cloudflare',
+		serverEntryPoint: '@sveltejs/adapter-cloudflare/entry',
 		async adapt({ utils, config }) {
 			const files = fileURLToPath(new URL('./files', import.meta.url));
 			const target_dir = join(process.cwd(), '.svelte-kit', 'cloudflare');

packages/adapter-cloudflare/package.json

@@ -12,6 +12,9 @@
 		".": {
 			"import": "./index.js"
 		},
+		"./entry": {
+			"import": "./files/worker.js"
+		},
 		"./package.json": "./package.json"
 	},
 	"types": "index.d.ts",