diff --git a/.changeset/loud-cameras-double.md b/.changeset/loud-cameras-double.md
new file mode 100644
index 000000000..99c960172
--- /dev/null
+++ b/.changeset/loud-cameras-double.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/vite-plugin-svelte': patch
+---
+
+Refactor Svelte libraries config handling
diff --git a/packages/vite-plugin-svelte/package.json b/packages/vite-plugin-svelte/package.json
index ded11dbab..187f49069 100644
--- a/packages/vite-plugin-svelte/package.json
+++ b/packages/vite-plugin-svelte/package.json
@@ -51,7 +51,8 @@
     "deepmerge": "^4.2.2",
     "kleur": "^4.1.5",
     "magic-string": "^0.26.7",
-    "svelte-hmr": "^0.15.0"
+    "svelte-hmr": "^0.15.0",
+    "vitefu": "^0.2.0"
   },
   "peerDependencies": {
     "diff-match-patch": "^1.0.5",
diff --git a/packages/vite-plugin-svelte/src/index.ts b/packages/vite-plugin-svelte/src/index.ts
index 38aa79ab2..b3f034920 100644
--- a/packages/vite-plugin-svelte/src/index.ts
+++ b/packages/vite-plugin-svelte/src/index.ts
@@ -1,5 +1,7 @@
 import fs from 'fs';
 import { HmrContext, ModuleNode, Plugin, ResolvedConfig, UserConfig } from 'vite';
+// eslint-disable-next-line node/no-missing-import
+import { isDepExcluded } from 'vitefu';
 import { handleHotUpdate } from './handle-hot-update';
 import { log, logCompilerWarnings } from './utils/log';
 import { CompileData, createCompileSvelte } from './utils/compile';
@@ -19,7 +21,7 @@ import { ensureWatchedFile, setupWatchers } from './utils/watch';
 import { resolveViaPackageJsonSvelte } from './utils/resolve';
 import { PartialResolvedId } from 'rollup';
 import { toRollupError } from './utils/error';
-import { isOptimizeExcluded, saveSvelteMetadata } from './utils/optimizer';
+import { saveSvelteMetadata } from './utils/optimizer';
 import { svelteInspector } from './ui/inspector/plugin';
 
 interface PluginAPI {
@@ -68,7 +70,7 @@ export function svelte(inlineOptions?: Partial<Options>): Plugin[] {
 				// @ts-expect-error temporarily lend the options variable until fixed in configResolved
 				options = await preResolveOptions(inlineOptions, config, configEnv);
 				// extra vite config
-				const extraViteConfig = buildExtraViteConfig(options, config);
+				const extraViteConfig = await buildExtraViteConfig(options, config);
 				log.debug('additional vite config', extraViteConfig);
 				return extraViteConfig;
 			},
@@ -160,12 +162,12 @@ export function svelte(inlineOptions?: Partial<Options>): Plugin[] {
 					options.prebundleSvelteLibraries &&
 					viteConfig.optimizeDeps?.disabled !== true &&
 					viteConfig.optimizeDeps?.disabled !== (options.isBuild ? 'build' : 'dev') &&
-					!isOptimizeExcluded(importee, viteConfig.optimizeDeps?.exclude);
+					!isDepExcluded(importee, viteConfig.optimizeDeps?.exclude ?? []);
 				// for prebundled libraries we let vite resolve the prebundling result
 				// for ssr, during scanning and non-prebundled, we do it
 				if (ssr || scan || !isPrebundled) {
 					try {
-						const resolved = resolveViaPackageJsonSvelte(importee, importer, cache);
+						const resolved = await resolveViaPackageJsonSvelte(importee, importer, cache);
 						if (resolved) {
 							log.debug(
 								`resolveId resolved ${resolved} via package.json svelte field of ${importee}`
diff --git a/packages/vite-plugin-svelte/src/utils/__tests__/dependencies.spec.ts b/packages/vite-plugin-svelte/src/utils/__tests__/dependencies.spec.ts
deleted file mode 100644
index baca99176..000000000
--- a/packages/vite-plugin-svelte/src/utils/__tests__/dependencies.spec.ts
+++ /dev/null
@@ -1,43 +0,0 @@
-import { describe, it, expect } from 'vitest';
-import { findRootSvelteDependencies, needsOptimization } from '../dependencies';
-import * as path from 'path';
-import { createRequire } from 'module';
-import { fileURLToPath } from 'url';
-const __dir = path.dirname(fileURLToPath(import.meta.url));
-const e2eTestRoot = path.resolve(__dir, '../../../../../packages/e2e-tests');
-
-describe('dependencies', () => {
-	describe('findRootSvelteDependencies', () => {
-		it('should find svelte dependencies in packages/e2e-test/hmr', () => {
-			const deps = findRootSvelteDependencies(path.resolve('packages/e2e-tests/hmr'));
-			expect(deps).toHaveLength(1);
-			expect(deps[0].name).toBe('e2e-test-dep-svelte-simple');
-			expect(deps[0].path).toEqual([]);
-		});
-		it('should find nested svelte dependencies in packages/e2e-test/package-json-svelte-field', () => {
-			const deps = findRootSvelteDependencies(path.join(e2eTestRoot, 'package-json-svelte-field'));
-			expect(deps).toHaveLength(3);
-			const hybrid = deps.find((dep) => dep.name === 'e2e-test-dep-svelte-hybrid');
-			expect(hybrid).toBeTruthy();
-			expect(hybrid.path).toHaveLength(0);
-			const nested = deps.find((dep) => dep.name === 'e2e-test-dep-svelte-nested');
-			expect(nested).toBeTruthy();
-			expect(nested.path).toHaveLength(0);
-			const simple = deps.find((dep) => dep.name === 'e2e-test-dep-svelte-simple');
-			expect(simple).toBeTruthy();
-			expect(simple.path).toHaveLength(1);
-			expect(simple.path[0]).toBe('e2e-test-dep-svelte-nested');
-		});
-	});
-	describe('needsOptimization', () => {
-		it('should optimize cjs deps only', () => {
-			const testDepsPath = path.join(e2eTestRoot, 'dependencies/package.json');
-			const localRequire = createRequire(testDepsPath);
-			expect(needsOptimization('e2e-test-dep-cjs-and-esm', localRequire)).toBe(false);
-			expect(needsOptimization('e2e-test-dep-cjs-only', localRequire)).toBe(true);
-			expect(needsOptimization('e2e-test-dep-esm-only', localRequire)).toBe(false);
-			expect(needsOptimization('e2e-test-dep-index-only', localRequire)).toBe(true);
-			expect(needsOptimization('e2e-test-dep-types-only', localRequire)).toBe(false);
-		});
-	});
-});
diff --git a/packages/vite-plugin-svelte/src/utils/dependencies.ts b/packages/vite-plugin-svelte/src/utils/dependencies.ts
index 9061d4442..428c8c6a5 100644
--- a/packages/vite-plugin-svelte/src/utils/dependencies.ts
+++ b/packages/vite-plugin-svelte/src/utils/dependencies.ts
@@ -1,130 +1,29 @@
-import { log } from './log';
 import path from 'path';
-import fs from 'fs';
-import { createRequire } from 'module';
+import fs from 'fs/promises';
+// eslint-disable-next-line node/no-missing-import
+import { findDepPkgJsonPath } from 'vitefu';
 
-export function findRootSvelteDependencies(root: string, cwdFallback = true): SvelteDependency[] {
-	log.debug(`findSvelteDependencies: searching svelte dependencies in ${root}`);
-	const pkgFile = path.join(root, 'package.json');
-	if (!fs.existsSync(pkgFile)) {
-		if (cwdFallback) {
-			const cwd = process.cwd();
-			if (root !== cwd) {
-				log.debug(`no package.json found in vite root ${root}`);
-				return findRootSvelteDependencies(cwd, false);
-			}
-		}
-		log.warn(`no package.json found, findRootSvelteDependencies failed`);
-		return [];
-	}
-
-	const pkg = parsePkg(root);
-	if (!pkg) {
-		return [];
-	}
-
-	const deps = [
-		...Object.keys(pkg.dependencies || {}),
-		...Object.keys(pkg.devDependencies || {})
-	].filter((dep) => !is_common_without_svelte_field(dep));
-
-	return getSvelteDependencies(deps, root);
-}
-
-function getSvelteDependencies(
-	deps: string[],
-	pkgDir: string,
-	path: string[] = []
-): SvelteDependency[] {
-	const result = [];
-	const localRequire = createRequire(`${pkgDir}/package.json`);
-	const resolvedDeps = deps
-		.map((dep) => resolveDependencyData(dep, localRequire))
-		.filter(Boolean) as DependencyData[];
-	for (const { pkg, dir } of resolvedDeps) {
-		const type = getSvelteDependencyType(pkg);
-		if (!type) continue;
-		result.push({ name: pkg.name, type, pkg, dir, path });
-		// continue crawling for component libraries so we can optimize them, js libraries are fine
-		if (type === 'component-library' && pkg.dependencies) {
-			let dependencyNames = Object.keys(pkg.dependencies);
-			const circular = dependencyNames.filter((name) => path.includes(name));
-			if (circular.length > 0) {
-				log.warn.enabled &&
-					log.warn(
-						`skipping circular svelte dependencies in automated vite optimizeDeps handling`,
-						circular.map((x) => path.concat(x).join('>'))
-					);
-				dependencyNames = dependencyNames.filter((name) => !path.includes(name));
-			}
-			if (path.length === 3) {
-				log.debug.once(`encountered deep svelte dependency tree: ${path.join('>')}`);
-			}
-			result.push(...getSvelteDependencies(dependencyNames, dir, path.concat(pkg.name)));
-		}
-	}
-	return result;
+interface DependencyData {
+	dir: string;
+	pkg: Record<string, any>;
 }
 
-export function resolveDependencyData(
+export async function resolveDependencyData(
 	dep: string,
-	localRequire: NodeRequire
-): DependencyData | void {
-	try {
-		const pkgJson = `${dep}/package.json`;
-		const pkg = localRequire(pkgJson);
-		const dir = path.dirname(localRequire.resolve(pkgJson));
-		return { dir, pkg };
-	} catch (e) {
-		log.debug.once(`dependency ${dep} does not export package.json`, e);
-		// walk up from default export until we find package.json with name=dep
-		try {
-			let dir = path.dirname(localRequire.resolve(dep));
-			while (dir) {
-				const pkg = parsePkg(dir, true);
-				if (pkg && pkg.name === dep) {
-					return { dir, pkg };
-				}
-				const parent = path.dirname(dir);
-				if (parent === dir) {
-					break;
-				}
-				dir = parent;
-			}
-		} catch (e) {
-			log.debug.once(`error while trying to find package.json of ${dep}`, e);
-		}
-	}
-	log.debug.once(`failed to resolve ${dep}`);
-}
-
-function parsePkg(dir: string, silent = false): Pkg | void {
-	const pkgFile = path.join(dir, 'package.json');
+	parent: string
+): Promise<DependencyData | undefined> {
+	const depDataPath = await findDepPkgJsonPath(dep, parent);
+	if (!depDataPath) return undefined;
 	try {
-		return JSON.parse(fs.readFileSync(pkgFile, 'utf-8'));
-	} catch (e) {
-		!silent && log.warn.enabled && log.warn(`failed to parse ${pkgFile}`, e);
-	}
-}
-
-function getSvelteDependencyType(pkg: Pkg): SvelteDependencyType | undefined {
-	if (isSvelteComponentLib(pkg)) {
-		return 'component-library';
-	} else if (isSvelteLib(pkg)) {
-		return 'js-library';
-	} else {
+		return {
+			dir: path.dirname(depDataPath),
+			pkg: JSON.parse(await fs.readFile(depDataPath, 'utf-8'))
+		};
+	} catch {
 		return undefined;
 	}
 }
 
-function isSvelteComponentLib(pkg: Pkg) {
-	return !!pkg.svelte;
-}
-
-function isSvelteLib(pkg: Pkg) {
-	return !!pkg.dependencies?.svelte || !!pkg.peerDependencies?.svelte;
-}
-
 const COMMON_DEPENDENCIES_WITHOUT_SVELTE_FIELD = [
 	'@lukeed/uuid',
 	'@playwright/test',
@@ -173,7 +72,7 @@ const COMMON_PREFIXES_WITHOUT_SVELTE_FIELD = [
  * @param dependency {string}
  * @returns {boolean} true if it is a dependency without a svelte field
  */
-export function is_common_without_svelte_field(dependency: string): boolean {
+export function isCommonDepWithoutSvelteField(dependency: string): boolean {
 	return (
 		COMMON_DEPENDENCIES_WITHOUT_SVELTE_FIELD.includes(dependency) ||
 		COMMON_PREFIXES_WITHOUT_SVELTE_FIELD.some(
@@ -184,58 +83,3 @@ export function is_common_without_svelte_field(dependency: string): boolean {
 		)
 	);
 }
-
-export function needsOptimization(dep: string, localRequire: NodeRequire): boolean {
-	const depData = resolveDependencyData(dep, localRequire);
-	if (!depData) return false;
-	const pkg = depData.pkg;
-	// only optimize if is cjs, using the below as heuristic
-	// see https://github.com/sveltejs/vite-plugin-svelte/issues/162
-	const hasEsmFields = pkg.module || pkg.exports;
-	if (hasEsmFields) return false;
-	if (pkg.main) {
-		// ensure entry is js so vite can prebundle it
-		// see https://github.com/sveltejs/vite-plugin-svelte/issues/233
-		const entryExt = path.extname(pkg.main);
-		return !entryExt || entryExt === '.js' || entryExt === '.cjs';
-	} else {
-		// check if has implicit index.js entrypoint
-		// https://github.com/sveltejs/vite-plugin-svelte/issues/281
-		try {
-			localRequire.resolve(`${dep}/index.js`);
-			return true;
-		} catch {
-			return false;
-		}
-	}
-}
-
-interface DependencyData {
-	dir: string;
-	pkg: Pkg;
-}
-
-export interface SvelteDependency {
-	name: string;
-	type: SvelteDependencyType;
-	dir: string;
-	pkg: Pkg;
-	path: string[];
-}
-
-// component-library => exports svelte components
-// js-library        => only uses svelte api, no components
-export type SvelteDependencyType = 'component-library' | 'js-library';
-
-export interface Pkg {
-	name: string;
-	svelte?: string;
-	dependencies?: DependencyList;
-	devDependencies?: DependencyList;
-	peerDependencies?: DependencyList;
-	[key: string]: any;
-}
-
-export interface DependencyList {
-	[key: string]: string;
-}
diff --git a/packages/vite-plugin-svelte/src/utils/optimizer.ts b/packages/vite-plugin-svelte/src/utils/optimizer.ts
index 6b1cb2ee7..34e97bcfc 100644
--- a/packages/vite-plugin-svelte/src/utils/optimizer.ts
+++ b/packages/vite-plugin-svelte/src/utils/optimizer.ts
@@ -43,20 +43,3 @@ function generateSvelteMetadata(options: ResolvedOptions) {
 	}
 	return metadata;
 }
-
-// vite optimizeDeps.exclude works for subpackages too
-// see https://github.com/vitejs/vite/blob/c87763c1418d1ba876eae13d139eba83ac6f28b2/packages/vite/src/node/optimizer/scan.ts#L293
-export function isOptimizeExcluded(dep: string, exclude?: string[]): boolean {
-	return !!exclude?.some((e) => dep === e || dep.startsWith(`${e}/`));
-}
-
-// include can contain `a > b`  entries, so we have to test the last segment too
-export function isOptimizeIncluded(dep: string, include?: string[]): boolean {
-	return !!include?.some((e) => {
-		if (e === dep) {
-			return true;
-		}
-		const lastArrow = e.lastIndexOf('>');
-		return lastArrow > -1 && e.slice(lastArrow + 1).trim() === dep;
-	});
-}
diff --git a/packages/vite-plugin-svelte/src/utils/options.ts b/packages/vite-plugin-svelte/src/utils/options.ts
index 832ce97c7..34f43ffb3 100644
--- a/packages/vite-plugin-svelte/src/utils/options.ts
+++ b/packages/vite-plugin-svelte/src/utils/options.ts
@@ -1,12 +1,5 @@
 /* eslint-disable no-unused-vars */
-import {
-	ConfigEnv,
-	DepOptimizationOptions,
-	ResolvedConfig,
-	UserConfig,
-	ViteDevServer,
-	normalizePath
-} from 'vite';
+import { ConfigEnv, ResolvedConfig, UserConfig, ViteDevServer, normalizePath } from 'vite';
 import { log } from './log';
 import { loadSvelteConfig } from './load-svelte-config';
 import { SVELTE_HMR_IMPORTS, SVELTE_IMPORTS, SVELTE_RESOLVE_MAIN_FIELDS } from './constants';
@@ -21,13 +14,19 @@ import type {
 } from 'svelte/types/compiler/preprocess';
 
 import path from 'path';
-import { findRootSvelteDependencies, needsOptimization, SvelteDependency } from './dependencies';
-import { createRequire } from 'module';
 import { esbuildSveltePlugin, facadeEsbuildSveltePluginName } from './esbuild';
 import { addExtraPreprocessors } from './preprocess';
 import deepmerge from 'deepmerge';
+import {
+	crawlFrameworkPkgs,
+	isDepExcluded,
+	isDepExternaled,
+	isDepIncluded,
+	isDepNoExternaled
+	// eslint-disable-next-line node/no-missing-import
+} from 'vitefu';
 import { atLeastSvelte } from './svelte-version';
-import { isOptimizeExcluded, isOptimizeIncluded } from './optimizer';
+import { isCommonDepWithoutSvelteField } from './dependencies';
 
 // svelte 3.53.0 changed compilerOptions.css from boolean to string | boolen, use string when available
 const cssAsString = atLeastSvelte('3.53.0');
@@ -320,12 +319,10 @@ function resolveViteRoot(viteConfig: UserConfig): string | undefined {
 	return normalizePath(viteConfig.root ? path.resolve(viteConfig.root) : process.cwd());
 }
 
-export function buildExtraViteConfig(
+export async function buildExtraViteConfig(
 	options: PreResolvedOptions,
 	config: UserConfig
-): Partial<UserConfig> {
-	// extra handling for svelte dependencies in the project
-	const svelteDeps = findRootSvelteDependencies(options.root);
+): Promise<Partial<UserConfig>> {
 	const extraViteConfig: Partial<UserConfig> = {
 		resolve: {
 			mainFields: [...SVELTE_RESOLVE_MAIN_FIELDS],
@@ -337,12 +334,37 @@ export function buildExtraViteConfig(
 		// knownJsSrcExtensions: options.extensions
 	};
 
-	extraViteConfig.optimizeDeps = buildOptimizeDepsForSvelte(
-		svelteDeps,
-		options,
-		config.optimizeDeps
-	);
+	const optimizeDepsConfig = buildOptimizeDepsForSvelte(config);
+	const ssrConfig = buildSSROptionsForSvelte(config);
+	const crawlConfig = await getCrawlPkgsConfig(options, config);
+
+	extraViteConfig.optimizeDeps = {
+		include: [
+			...optimizeDepsConfig.include,
+			...crawlConfig.optimizeDeps.include.filter(
+				(dep) => !isDepExcluded(dep, optimizeDepsConfig.exclude)
+			)
+		],
+		exclude: [
+			...optimizeDepsConfig.exclude,
+			...crawlConfig.optimizeDeps.exclude.filter(
+				(dep) => !isDepIncluded(dep, optimizeDepsConfig.include)
+			)
+		]
+	};
 
+	extraViteConfig.ssr = {
+		noExternal: [
+			...ssrConfig.noExternal,
+			...crawlConfig.ssr.noExternal.filter((dep) => !isDepExternaled(dep, ssrConfig.external))
+		],
+		external: [
+			...ssrConfig.external,
+			...crawlConfig.ssr.external.filter((dep) => !isDepNoExternaled(dep, ssrConfig.noExternal))
+		]
+	};
+
+	// handle prebundling for svelte files
 	if (options.prebundleSvelteLibraries) {
 		extraViteConfig.optimizeDeps = {
 			...extraViteConfig.optimizeDeps,
@@ -358,9 +380,6 @@ export function buildExtraViteConfig(
 		};
 	}
 
-	// @ts-ignore
-	extraViteConfig.ssr = buildSSROptionsForSvelte(svelteDeps, options, config, extraViteConfig);
-
 	// enable hmrPartialAccept if not explicitly disabled
 	if (
 		(options.hot == null ||
@@ -374,103 +393,75 @@ export function buildExtraViteConfig(
 	return extraViteConfig;
 }
 
-function buildOptimizeDepsForSvelte(
-	svelteDeps: SvelteDependency[],
-	options: PreResolvedOptions,
-	optimizeDeps?: DepOptimizationOptions
-): DepOptimizationOptions {
+async function getCrawlPkgsConfig(options: PreResolvedOptions, config: UserConfig) {
+	// extra handling for svelte dependencies in the project
+	const depsConfig = await crawlFrameworkPkgs({
+		root: options.root,
+		isBuild: options.isBuild,
+		viteUserConfig: config,
+		isFrameworkPkgByJson(pkgJson) {
+			return !!pkgJson.svelte;
+		},
+		isSemiFrameworkPkgByJson(pkgJson) {
+			return !!pkgJson.dependencies?.svelte || !!pkgJson.peerDependencies?.svelte;
+		},
+		isFrameworkPkgByName(pkgName) {
+			const isNotSveltePackage = isCommonDepWithoutSvelteField(pkgName);
+			if (isNotSveltePackage) {
+				return false;
+			} else {
+				return undefined;
+			}
+		}
+	});
+
+	log.debug('crawl svelte packages result', depsConfig);
+
+	if (options.prebundleSvelteLibraries) {
+		depsConfig.optimizeDeps = { include: [], exclude: [] };
+	} else if (options.disableDependencyReinclusion === true) {
+		depsConfig.optimizeDeps.include = depsConfig.optimizeDeps.include.filter(
+			(dep) => !dep.includes('>')
+		);
+	} else if (Array.isArray(options.disableDependencyReinclusion)) {
+		const disabledDeps = options.disableDependencyReinclusion;
+		depsConfig.optimizeDeps.include = depsConfig.optimizeDeps.include.filter((dep) => {
+			if (!dep.includes('>')) return true;
+			const trimDep = dep.replace(/\s+/g, '');
+			return disabledDeps.some((disabled) => trimDep.includes(`${disabled}>`));
+		});
+	}
+
+	log.debug('processed crawl svelte packages result', depsConfig);
+
+	return depsConfig;
+}
+
+function buildOptimizeDepsForSvelte(config: UserConfig) {
 	// include svelte imports for optimization unless explicitly excluded
 	const include: string[] = [];
 	const exclude: string[] = ['svelte-hmr'];
-	const isIncluded = (dep: string) =>
-		isOptimizeIncluded(dep, include) || isOptimizeIncluded(dep, optimizeDeps?.include);
-	const isExcluded = (dep: string) =>
-		isOptimizeExcluded(dep, exclude) || isOptimizeExcluded(dep, optimizeDeps?.exclude);
-	if (!isExcluded('svelte')) {
+	if (!isDepExcluded('svelte', config.optimizeDeps?.exclude ?? [])) {
 		const svelteImportsToInclude = SVELTE_IMPORTS.filter((x) => x !== 'svelte/ssr'); // not used on clientside
 		log.debug(
 			`adding bare svelte packages to optimizeDeps.include: ${svelteImportsToInclude.join(', ')} `
 		);
-		include.push(...svelteImportsToInclude.filter((x) => !isIncluded(x)));
+		include.push(...svelteImportsToInclude);
 	} else {
 		log.debug('"svelte" is excluded in optimizeDeps.exclude, skipped adding it to include.');
 	}
-
-	// If we prebundle svelte libraries, we can skip the whole prebundling dance below
-	if (options.prebundleSvelteLibraries) {
-		return { include, exclude };
-	}
-
-	// only svelte component libraries needs to be processed for optimizeDeps, js libraries work fine
-	svelteDeps = svelteDeps.filter((dep) => dep.type === 'component-library');
-
-	const svelteDepsToExclude = Array.from(new Set(svelteDeps.map((dep) => dep.name))).filter(
-		(dep) => !isIncluded(dep)
-	);
-	log.debug(`automatically excluding found svelte dependencies: ${svelteDepsToExclude.join(', ')}`);
-	exclude.push(...svelteDepsToExclude.filter((x) => !isExcluded(x)));
-
-	if (options.disableDependencyReinclusion !== true) {
-		const disabledReinclusions = options.disableDependencyReinclusion || [];
-		if (disabledReinclusions.length > 0) {
-			log.debug(`not reincluding transitive dependencies of`, disabledReinclusions);
-		}
-		const transitiveDepsToInclude = svelteDeps
-			.filter((dep) => !disabledReinclusions.includes(dep.name) && isExcluded(dep.name))
-			.flatMap((dep) => {
-				const localRequire = createRequire(`${dep.dir}/package.json`);
-				return Object.keys(dep.pkg.dependencies || {})
-					.filter((depOfDep) => !isExcluded(depOfDep) && needsOptimization(depOfDep, localRequire))
-					.map((depOfDep) => dep.path.concat(dep.name, depOfDep).join(' > '));
-			});
-		log.debug(
-			`reincluding transitive dependencies of excluded svelte dependencies`,
-			transitiveDepsToInclude
-		);
-		include.push(...transitiveDepsToInclude);
-	}
-
 	return { include, exclude };
 }
 
-function buildSSROptionsForSvelte(
-	svelteDeps: SvelteDependency[],
-	options: ResolvedOptions,
-	config: UserConfig
-): any {
+function buildSSROptionsForSvelte(config: UserConfig) {
 	const noExternal: (string | RegExp)[] = [];
-
+	const external: string[] = [];
 	// add svelte to ssr.noExternal unless it is present in ssr.external
 	// so we can resolve it with svelte/ssr
-	if (!config.ssr?.external?.includes('svelte')) {
+	if (!isDepExternaled('svelte', config.ssr?.external ?? [])) {
 		noExternal.push('svelte', /^svelte\//);
 	}
-
-	// add svelte dependencies to ssr.noExternal unless present in ssr.external
-	noExternal.push(
-		...Array.from(new Set(svelteDeps.map((s) => s.name))).filter(
-			(x) => !config.ssr?.external?.includes(x)
-		)
-	);
-	const ssr = {
-		noExternal,
-		external: [] as string[]
-	};
-
-	if (options.isServe) {
-		// during dev, we have to externalize transitive dependencies, see https://github.com/sveltejs/vite-plugin-svelte/issues/281
-		ssr.external = Array.from(
-			new Set(svelteDeps.flatMap((dep) => Object.keys(dep.pkg.dependencies || {})))
-		).filter(
-			(dep) =>
-				!ssr.noExternal.includes(dep) &&
-				// TODO noExternal can be something different than a string array
-				//!config.ssr?.noExternal?.includes(dep) &&
-				!config.ssr?.external?.includes(dep)
-		);
-	}
-
-	return ssr;
+	return { noExternal, external };
 }
 
 export function patchResolvedViteConfig(viteConfig: ResolvedConfig, options: ResolvedOptions) {
diff --git a/packages/vite-plugin-svelte/src/utils/resolve.ts b/packages/vite-plugin-svelte/src/utils/resolve.ts
index 2e03e2297..8fdb55390 100644
--- a/packages/vite-plugin-svelte/src/utils/resolve.ts
+++ b/packages/vite-plugin-svelte/src/utils/resolve.ts
@@ -1,25 +1,24 @@
 import path from 'path';
-import { builtinModules, createRequire } from 'module';
-import { is_common_without_svelte_field, resolveDependencyData } from './dependencies';
+import { builtinModules } from 'module';
+import { resolveDependencyData, isCommonDepWithoutSvelteField } from './dependencies';
 import { VitePluginSvelteCache } from './vite-plugin-svelte-cache';
 
-export function resolveViaPackageJsonSvelte(
+export async function resolveViaPackageJsonSvelte(
 	importee: string,
 	importer: string | undefined,
 	cache: VitePluginSvelteCache
-): string | void {
+): Promise<string | void> {
 	if (
 		importer &&
 		isBareImport(importee) &&
 		!isNodeInternal(importee) &&
-		!is_common_without_svelte_field(importee)
+		!isCommonDepWithoutSvelteField(importee)
 	) {
 		const cached = cache.getResolvedSvelteField(importee, importer);
 		if (cached) {
 			return cached;
 		}
-		const localRequire = createRequire(importer);
-		const pkgData = resolveDependencyData(importee, localRequire);
+		const pkgData = await resolveDependencyData(importee, importer);
 		if (pkgData) {
 			const { pkg, dir } = pkgData;
 			if (pkg.svelte) {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 61193509e..13cfae049 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -508,12 +508,14 @@ importers:
       svelte-hmr: ^0.15.0
       tsup: ^6.4.0
       vite: ^3.2.3
+      vitefu: ^0.2.0
     dependencies:
       debug: 4.3.4
       deepmerge: 4.2.2
       kleur: 4.1.5
       magic-string: 0.26.7
       svelte-hmr: 0.15.0_svelte@3.53.1
+      vitefu: 0.2.0_vite@3.2.3
     devDependencies:
       '@types/debug': 4.1.7
       '@types/diff-match-patch': 1.0.32
@@ -764,7 +766,6 @@ packages:
     cpu: [arm]
     os: [android]
     requiresBuild: true
-    dev: true
     optional: true
 
   /@esbuild/linux-loong64/0.15.13:
@@ -773,7 +774,6 @@ packages:
     cpu: [loong64]
     os: [linux]
     requiresBuild: true
-    dev: true
     optional: true
 
   /@eslint/eslintrc/1.3.3:
@@ -2237,7 +2237,6 @@ packages:
     cpu: [x64]
     os: [android]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-android-arm64/0.15.13:
@@ -2246,7 +2245,6 @@ packages:
     cpu: [arm64]
     os: [android]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-darwin-64/0.15.13:
@@ -2255,7 +2253,6 @@ packages:
     cpu: [x64]
     os: [darwin]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-darwin-arm64/0.15.13:
@@ -2264,7 +2261,6 @@ packages:
     cpu: [arm64]
     os: [darwin]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-freebsd-64/0.15.13:
@@ -2273,7 +2269,6 @@ packages:
     cpu: [x64]
     os: [freebsd]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-freebsd-arm64/0.15.13:
@@ -2282,7 +2277,6 @@ packages:
     cpu: [arm64]
     os: [freebsd]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-linux-32/0.15.13:
@@ -2291,7 +2285,6 @@ packages:
     cpu: [ia32]
     os: [linux]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-linux-64/0.15.13:
@@ -2300,7 +2293,6 @@ packages:
     cpu: [x64]
     os: [linux]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-linux-arm/0.15.13:
@@ -2309,7 +2301,6 @@ packages:
     cpu: [arm]
     os: [linux]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-linux-arm64/0.15.13:
@@ -2318,7 +2309,6 @@ packages:
     cpu: [arm64]
     os: [linux]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-linux-mips64le/0.15.13:
@@ -2327,7 +2317,6 @@ packages:
     cpu: [mips64el]
     os: [linux]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-linux-ppc64le/0.15.13:
@@ -2336,7 +2325,6 @@ packages:
     cpu: [ppc64]
     os: [linux]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-linux-riscv64/0.15.13:
@@ -2345,7 +2333,6 @@ packages:
     cpu: [riscv64]
     os: [linux]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-linux-s390x/0.15.13:
@@ -2354,7 +2341,6 @@ packages:
     cpu: [s390x]
     os: [linux]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-netbsd-64/0.15.13:
@@ -2363,7 +2349,6 @@ packages:
     cpu: [x64]
     os: [netbsd]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-openbsd-64/0.15.13:
@@ -2372,7 +2357,6 @@ packages:
     cpu: [x64]
     os: [openbsd]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-sunos-64/0.15.13:
@@ -2381,7 +2365,6 @@ packages:
     cpu: [x64]
     os: [sunos]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-windows-32/0.15.13:
@@ -2390,7 +2373,6 @@ packages:
     cpu: [ia32]
     os: [win32]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-windows-64/0.15.13:
@@ -2399,7 +2381,6 @@ packages:
     cpu: [x64]
     os: [win32]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild-windows-arm64/0.15.13:
@@ -2408,7 +2389,6 @@ packages:
     cpu: [arm64]
     os: [win32]
     requiresBuild: true
-    dev: true
     optional: true
 
   /esbuild/0.15.13:
@@ -2439,7 +2419,6 @@ packages:
       esbuild-windows-32: 0.15.13
       esbuild-windows-64: 0.15.13
       esbuild-windows-arm64: 0.15.13
-    dev: true
 
   /escalade/3.1.1:
     resolution: {integrity: sha512-k0er2gUkLf8O0zKJiAhmkTnJlTvINGv7ygDNPbeIsX/TJjGJZHuh9B2UxbsaEkmlEo9MfhrSzmhIlhRlI2GXnw==}
@@ -2952,12 +2931,10 @@ packages:
     engines: {node: ^8.16.0 || ^10.6.0 || >=11.0.0}
     os: [darwin]
     requiresBuild: true
-    dev: true
     optional: true
 
   /function-bind/1.1.1:
     resolution: {integrity: sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==}
-    dev: true
 
   /function.prototype.name/1.1.5:
     resolution: {integrity: sha512-uN7m/BzVKQnCUF/iW8jYea67v++2u7m5UgENbHRtdDVclOUP+FMPlCNdmk0h/ysGyo2tavMJEDqJAkJdRa1vMA==}
@@ -3146,7 +3123,6 @@ packages:
     engines: {node: '>= 0.4.0'}
     dependencies:
       function-bind: 1.1.1
-    dev: true
 
   /hosted-git-info/2.8.9:
     resolution: {integrity: sha512-mxIDAb9Lsm6DoOJ7xH+5+X4y1LU/4Hi50L9C5sIswK3JzULS4bwk1FvjdBgvYR4bzT4tuUQiC15FE2f5HbLvYw==}
@@ -3329,7 +3305,6 @@ packages:
     resolution: {integrity: sha512-Erxj2n/LDAZ7H8WNJXd9tw38GYM3dv8rk8Zcs+jJuxYTW7sozH+SS8NtrSjVL1/vpLvWi1hxy96IzjJ3EHTJJg==}
     dependencies:
       has: 1.0.3
-    dev: true
 
   /is-date-object/1.0.5:
     resolution: {integrity: sha512-9YQaSxsAiSwcvS33MBk3wTCVnWK+HhF8VZR2jRxehM16QcVOdHqPn4VPHmRK4lSr38n9JriurInLcP90xsYNfQ==}
@@ -3928,7 +3903,6 @@ packages:
     resolution: {integrity: sha512-MqBkQh/OHTS2egovRtLk45wEyNXwF+cokD+1YPf9u5VfJiRdAiRwB2froX5Co9Rh20xs4siNPm8naNotSD6RBw==}
     engines: {node: ^10 || ^12 || ^13.7 || ^14 || >=15.0.1}
     hasBin: true
-    dev: true
 
   /natural-compare-lite/1.4.0:
     resolution: {integrity: sha512-Tj+HTDSJJKaZnfiuw+iaF9skdPpTo2GtEly5JHnWV/hfv2Qj/9RKsGISQtLh2ox3l5EAGw487hnBee0sIJ6v2g==}
@@ -4245,7 +4219,6 @@ packages:
 
   /path-parse/1.0.7:
     resolution: {integrity: sha512-LDJzPVEEEPR+y48z93A0Ed0yXb8pAByGWo/k5YYdYgpY2/2EsOsksJrq7lOHxryrVOn1ejG6oAp8ahvOIQD8sw==}
-    dev: true
 
   /path-to-regexp/0.1.7:
     resolution: {integrity: sha512-5DFkuoqlv1uYQKxy8omFBeJPQcdoE07Kv2sferDCrAq1ohOU+MSDswDIbnx3YAM60qIOnYa53wBhXW0EbMonrQ==}
@@ -4269,7 +4242,6 @@ packages:
 
   /picocolors/1.0.0:
     resolution: {integrity: sha512-1fygroTLlHu66zi26VoTDv8yRgm0Fccecssto+MhsZ0D/DGW2sm8E8AjW7NU5VVTRt5GxbeZ5qBuJr+HyLYkjQ==}
-    dev: true
 
   /picomatch/2.3.1:
     resolution: {integrity: sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==}
@@ -4360,7 +4332,6 @@ packages:
       nanoid: 3.3.4
       picocolors: 1.0.0
       source-map-js: 1.0.2
-    dev: true
 
   /preferred-pm/3.0.3:
     resolution: {integrity: sha512-+wZgbxNES/KlJs9q40F/1sfOd/j7f1O9JaHcW5Dsn3aUUOZg3L2bjpVUcKV2jvtElYfoTuQiNeMfQJ4kwUAhCQ==}
@@ -4568,7 +4539,6 @@ packages:
       is-core-module: 2.10.0
       path-parse: 1.0.7
       supports-preserve-symlinks-flag: 1.0.0
-    dev: true
 
   /restore-cursor/3.1.0:
     resolution: {integrity: sha512-l+sSefzHpj5qimhFSE5a8nufZYAM3sBSVMAPtYkmC+4EH2anSGaEMXSD0izRQbu9nfyQ9y5JrVmp7E8oZrUjvA==}
@@ -4613,7 +4583,6 @@ packages:
     hasBin: true
     optionalDependencies:
       fsevents: 2.3.2
-    dev: true
 
   /rollup/3.2.5:
     resolution: {integrity: sha512-/Ha7HhVVofduy+RKWOQJrxe4Qb3xyZo+chcpYiD8SoQa4AG7llhupUtyfKSSrdBM2mWJjhM8wZwmbY23NmlIYw==}
@@ -4846,7 +4815,6 @@ packages:
   /source-map-js/1.0.2:
     resolution: {integrity: sha512-R0XvVJ9WusLiqTCEiGCmICCMplcCkIwwR11mOSD9CR5u+IXYdiseeEuXCVAjS54zqwkLcPNnmU4OeJ6tUrWhDw==}
     engines: {node: '>=0.10.0'}
-    dev: true
 
   /source-map/0.6.1:
     resolution: {integrity: sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==}
@@ -5061,7 +5029,6 @@ packages:
   /supports-preserve-symlinks-flag/1.0.0:
     resolution: {integrity: sha512-ot0WnXS9fgdkgIcePe6RHNk1WA8+muPa6cSjeR3V8K27q9BB1rTE3R1p7Hv0z1ZyAc8s6Vvv8DIyWf681MAt0w==}
     engines: {node: '>= 0.4'}
-    dev: true
 
   /svelte-check/2.9.2_svelte@3.53.1:
     resolution: {integrity: sha512-DRi8HhnCiqiGR2YF9ervPGvtoYrheE09cXieCTEqeTPOTJzfoa54Py8rovIBv4bH4n5HgZYIyTQ3DDLHQLl2uQ==}
@@ -5754,7 +5721,6 @@ packages:
       rollup: 2.79.1
     optionalDependencies:
       fsevents: 2.3.2
-    dev: true
 
   /vite/3.2.3_@types+node@18.11.9:
     resolution: {integrity: sha512-h8jl1TZ76eGs3o2dIBSsvXDLb1m/Ec1iej8ZMdz+PsaFUsftZeWe2CZOI3qogEsMNaywc17gu0q6cQDzh/weCQ==}
@@ -5859,6 +5825,17 @@ packages:
       fsevents: 2.3.2
     dev: true
 
+  /vitefu/0.2.0_vite@3.2.3:
+    resolution: {integrity: sha512-58946QxFCr0OnNbF73JPA3nyzfI65G82bWwKV8zxAcQfTeAyGU99ejSFIG7RBUDBUr1RonXI/VEMzIrNl/euXA==}
+    peerDependencies:
+      vite: ^3.0.0 || ^3.2.0
+    peerDependenciesMeta:
+      vite:
+        optional: true
+    dependencies:
+      vite: 3.2.3
+    dev: false
+
   /vitest/0.25.0:
     resolution: {integrity: sha512-CVgBdKSeA27mowKC/C31Tx7ZBjRoyasq/yW7zoqUaCdKaOsjdzRUH5KgSL3eG36DzaaUsbnwWPUbAOtFz5k6tQ==}
     engines: {node: '>=v14.16.0'}