Skip Vite resolve workaround on Vite 4.1+ or Svelte 4+ (#622)

* Skip Vite resolve workaround on Vite 4.1+

* Update packages/vite-plugin-svelte/src/index.ts

Co-authored-by: Dominik G. <[email protected]>

* Update packages/vite-plugin-svelte/src/index.ts

Co-authored-by: Dominik G. <[email protected]>

* Update packages/vite-plugin-svelte/src/index.ts

Co-authored-by: Dominik G. <[email protected]>

* Check Svelte version as well

* move startsWith to constants

---------

Co-authored-by: Dominik G. <[email protected]>

Author: benmccann

.changeset/chilled-tigers-flash.md

@@ -0,0 +1,5 @@
+---
+'@sveltejs/vite-plugin-svelte': patch
+---
+
+Skip Vite resolve workaround on Vite 4.1+ or Svelte 4+

packages/vite-plugin-svelte/src/index.ts

@@ -1,5 +1,13 @@
 import fs from 'fs';
-import { HmrContext, ModuleNode, Plugin, ResolvedConfig, UserConfig } from 'vite';
+import { VERSION as svelteVersion } from 'svelte/compiler';
+import {
+	HmrContext,
+	ModuleNode,
+	Plugin,
+	ResolvedConfig,
+	UserConfig,
+	version as viteVersion
+} from 'vite';
 // eslint-disable-next-line node/no-missing-import
 import { isDepExcluded } from 'vitefu';
 import { handleHotUpdate } from './handle-hot-update';
@@ -35,6 +43,9 @@ interface PluginAPI {
 	// TODO expose compile cache here so other utility plugins can use it
 }
 
+const isVite4_0 = viteVersion.startsWith('4.0');
+const isSvelte3 = svelteVersion.startsWith('3');
+
 export function svelte(inlineOptions?: Partial<Options>): Plugin[] {
 	if (process.env.DEBUG != null) {
 		log.setLevel('debug');
@@ -135,7 +146,8 @@ export function svelte(inlineOptions?: Partial<Options>): Plugin[] {
 					}
 				}
 
-				if (ssr && importee === 'svelte') {
+				// TODO: remove this after bumping peerDep on Vite to 4.1+ or Svelte to 4.0+
+				if (isVite4_0 && isSvelte3 && ssr && importee === 'svelte') {
 					if (!resolvedSvelteSSR) {
 						resolvedSvelteSSR = this.resolve('svelte/ssr', undefined, { skipSelf: true }).then(
 							(svelteSSR) => {