CHANGELOG.md

@@ -1,85 +1,59 @@
-### v6.0.0 (_2026-10-15_)
+### v6.0.0-beta.6 (_2026-10-07_)
 
-- feat(bytecode): support RegExp for chunkAlias option ([#885](https://github.com/alex8088/electron-vite/issues/885))
-- refactor: share and normalize build output resolution
-- refactor: inline bytecode build plugin name
 - refactor!: invoke the bytecode compiler only once to compile all code
 - refactor: use pipe stdio for spawn Electron bytecode compliler and append stderr error
-- refactor: use rolldown instead of esbuild to bundle config file
-- refactor: compile bytecode using the Electron main process or renderer process rather then via the `ELECTRON_RUN_AS_NODE`
-- refactor!: simplify resolve config and isolate user config for sub-builds
-- refactor: `?modulePath` sub-build output strategy
-- perf(swcPlugin): skip redundant minification when using Oxc ([#922](https://github.com/alex8088/electron-vite/issues/922))
-- perf: skip Babel loading in development and builds without bytecode
-- perf: short-circuit bytecode detection in builds
-- perf: setup rollupOption compatibility via config factory
-- perf: build compatibility target for Electron 42, 43, 44
-- fix(asset): use consistent file paths for asset cache lookups
-- fix(bytecode): unable to obtain the bytecode build session in Node.js 24 ([#928](https://github.com/alex8088/electron-vite/issues/928))
+- chore: improve jsdoc for bytecode options (#898)
+
+### v6.0.0-beta.5 (_2026-09-29_)
+
+- feat(bytecode): support RegExp for chunkAlias option ([#885](https://github.com/alex8088/electron-vite/issues/885))
 - fix(dev): exit non-zero when Electron is killed by a signal ([#918](https://github.com/alex8088/electron-vite/issues/918))
 - fix(dev): forward termination signals to Electron child ([#900](https://github.com/alex8088/electron-vite/issues/900))
 - fix(dev): improve Electron process signal handling
 - fix(bytecode): set the regular expression's `lastIndex` to 0 to perform a global match for chunkAlias option
+
+### v6.0.0-beta.4 (_2026-09-28_)
+
 - fix(esmShim)!: use `this.parse` to find the last static import ([#906](https://github.com/alex8088/electron-vite/issues/906))
+
+### v6.0.0-beta.3 (_2026-09-27_)
+
 - fix(deps)!: downgraded @babel/* to v7 due to Node requirements
+
+### v6.0.0-beta.2 (_2026-09-27_)
+
+- refactor: use rolldown instead of esbuild to bundle config file
+- refactor: compile bytecode using the Electron main process or renderer process rather then via the `ELECTRON_RUN_AS_NODE`
+- perf: setup rollupOption compatibility via config factory
+- perf: build compatibility target for Electron 42, 43, 44
 - fix: remove useless preset config
 - fix(swcPlugin): also disable oxc on Vite 8 ([#920](https://github.com/alex8088/electron-vite/issues/920))
 - fix: clone config without plugins [#902](https://github.com/alex8088/electron-vite/issues/902)
 - fix(deps)!: update magic-string to v1
 - fix(deps)!: update @babel/* to v8
+- chore(deps): update all non-major dependencies
+- chore(deps): update lint-staged to v17
+
+### v6.0.0-beta.1 (_2026-04-12_)
+
+- refactor!: simplify resolve config and isolate user config for sub-builds
 - fix!: compatible with rollupOptions and rolldownOptions
 - fix: chunk filename is wrong in ES mode
+
+### v6.0.0-beta.0 (_2026-04-09_)
+
+- refactor: `?modulePath` sub-build output strategy
 - fix(asset): isolate asset caches per environment
 - fix: use the environment api in plugins
 - fix: skip TTY terminal manipulations in CI environments
 - fix(deps)!: update vite to v8 ([#894](https://github.com/alex8088/electron-vite/issues/894))
 - fix: Typescript compiler option 'outDir' must be located inside Rollup 'dir' option
 - fix(isolateEntries): handle non-TTY stdout in build reporter (#887)
-- chore: simplify bytecode compiler initialization
-- chore: improve jsdoc for bytecode options ([#898](https://github.com/alex8088/electron-vite/issues/898))
-- chore(deps): update all non-major dependencies
-- chore(deps): update lint-staged to v17
 - chore(deps): update cac to v7
 - chore(deps): update globals to v17
 - chore(deps): update eslint and @eslint/js to v10
 - chore(deps): update all non-major dependencies
 
-### v6.0.0-beta.8 (_2026-10-11_)
-
-See [v6.0.0-beta.8 changelog](https://github.com/alex8088/electron-vite/blob/v6.0.0-beta.8/CHANGELOG.md)
-
-### v6.0.0-beta.7 (_2026-10-08_)
-
-See [v6.0.0-beta.7 changelog](https://github.com/alex8088/electron-vite/blob/v6.0.0-beta.7/CHANGELOG.md)
-
-### v6.0.0-beta.6 (_2026-10-07_)
-
-See [v6.0.0-beta.6 changelog](https://github.com/alex8088/electron-vite/blob/v6.0.0-beta.6/CHANGELOG.md)
-
-### v6.0.0-beta.5 (_2026-09-29_)
-
-See [v6.0.0-beta.5 changelog](https://github.com/alex8088/electron-vite/blob/v6.0.0-beta.5/CHANGELOG.md)
-
-### v6.0.0-beta.4 (_2026-09-28_)
-
-See [v6.0.0-beta.4 changelog](https://github.com/alex8088/electron-vite/blob/v6.0.0-beta.4/CHANGELOG.md)
-
-### v6.0.0-beta.3 (_2026-09-27_)
-
-See [v6.0.0-beta.3 changelog](https://github.com/alex8088/electron-vite/blob/v6.0.0-beta.3/CHANGELOG.md)
-
-### v6.0.0-beta.2 (_2026-09-27_)
-
-See [v6.0.0-beta.2 changelog](https://github.com/alex8088/electron-vite/blob/v6.0.0-beta.2/CHANGELOG.md)
-
-### v6.0.0-beta.1 (_2026-04-12_)
-
-See [v6.0.0-beta.1 changelog](https://github.com/alex8088/electron-vite/blob/v6.0.0-beta.1/CHANGELOG.md)
-
-### v6.0.0-beta.0 (_2026-04-09_)
-
-See [v6.0.0-beta.0 changelog](https://github.com/alex8088/electron-vite/blob/v6.0.0-beta.0/CHANGELOG.md)
-
 ### v5.0.0 (_2025-12-07_)
 
 - feat(config): add `build.externalizeDeps` and `build.bytecode` config options to replace `externalizeDepsPlugin` and `bytecodePlugin`

package.json

@@ -1,6 +1,6 @@
 {
   "name": "electron-vite",
-  "version": "6.0.0",
+  "version": "6.0.0-beta.6",
   "description": "Electron build tooling based on Vite",
   "type": "module",
   "main": "./dist/index.js",

src/build.ts

@@ -1,11 +1,10 @@
-import { build as viteBuild, mergeConfig } from 'vite'
+import { build as viteBuild } from 'vite'
 import { type InlineConfig, type MainViteConfig, type PreloadViteConfig, resolveConfig } from './config'
-import { BytecodeCompiler } from './bytecodeCompiler'
+import { BytecodeBuild, runWithBytecodeBuild } from './bytecode/build'
 import { asyncFlatten } from './utils'
 
-async function usesBytecode(config?: MainViteConfig | PreloadViteConfig): Promise<boolean> {
+async function useBytecode(config?: MainViteConfig | PreloadViteConfig): Promise<boolean> {
   if (!config) return false
-  if (config.build?.bytecode) return true
   const plugins = await asyncFlatten(config.plugins || [])
   return plugins.some(plugin => plugin && typeof plugin === 'object' && plugin.name === 'vite:bytecode')
 }
@@ -15,21 +14,15 @@ async function usesBytecode(config?: MainViteConfig | PreloadViteConfig): Promis
  */
 export async function build(inlineConfig: InlineConfig = {}): Promise<void> {
   process.env.NODE_ENV_ELECTRON_VITE = 'production'
-
-  const bytecodeCompiler = new BytecodeCompiler()
-  const config = await resolveConfig(
-    mergeConfig(inlineConfig, {
-      plugins: [{ name: 'vite:electron-bytecode-build', api: { compiler: bytecodeCompiler } }]
-    }),
-    'build',
-    'production'
-  )
+  const config = await resolveConfig(inlineConfig, 'build', 'production')
 
   if (!config.config) {
     return
   }
 
-  const hasBytecode = (await usesBytecode(config.config.main)) || (await usesBytecode(config.config.preload))
+  const mainBytecode = await useBytecode(config.config.main)
+  const preloadBytecode = await useBytecode(config.config.preload)
+  const bytecodeBuild = mainBytecode || preloadBytecode ? new BytecodeBuild() : undefined
 
   const buildTargets = async (): Promise<void> => {
     // Build targets in order: main -> preload -> renderer
@@ -45,12 +38,12 @@ export async function build(inlineConfig: InlineConfig = {}): Promise<void> {
     }
   }
 
-  if (!hasBytecode) return buildTargets()
+  if (!bytecodeBuild) return buildTargets()
 
   try {
-    await bytecodeCompiler.start()
-    await buildTargets()
+    await bytecodeBuild.start()
+    await runWithBytecodeBuild(bytecodeBuild, buildTargets)
   } finally {
-    await bytecodeCompiler.stop()
+    await bytecodeBuild.stop()
   }
 }

src/bytecode/build.ts

@@ -0,0 +1,29 @@
+import { AsyncLocalStorage } from 'node:async_hooks'
+import { BytecodeCompiler, type BytecodeCompileResult, type BytecodeTarget } from './compiler'
+
+// Nested isolated-entry builds inherit the compilation session from the parent build.
+const activeBuild = new AsyncLocalStorage<BytecodeBuild>()
+
+export class BytecodeBuild {
+  private readonly compiler = new BytecodeCompiler()
+
+  start(): Promise<void> {
+    return this.compiler.start()
+  }
+
+  compile(target: BytecodeTarget, code: string): Promise<BytecodeCompileResult> {
+    return this.compiler.compile(target, code)
+  }
+
+  stop(): Promise<void> {
+    return this.compiler.stop()
+  }
+}
+
+export function runWithBytecodeBuild<T>(build: BytecodeBuild, callback: () => Promise<T>): Promise<T> {
+  return activeBuild.run(build, callback)
+}
+
+export function getBytecodeBuild(): BytecodeBuild | undefined {
+  return activeBuild.getStore()
+}

src/bytecode/compiler.ts

@@ -1,7 +1,7 @@
 import { type ChildProcess, spawn } from 'node:child_process'
 import path from 'node:path'
 import { createRequire } from 'node:module'
-import { getElectronPath } from './electron'
+import { getElectronPath } from '../electron'
 
 const require = createRequire(import.meta.url)
 const RPC_TIMEOUT = 30_000

src/plugins/asset.ts

@@ -67,7 +67,7 @@ export default function assetPlugin(): Plugin {
         referenceId = `__VITE_NODE_PUBLIC_ASSET__${hash}__`
       } else {
         const cache = assetCache.get(this.environment)!
-        const cached = cache.get(file)
+        const cached = cache.get(id)
         if (cached) {
           referenceId = cached
         } else {

src/plugins/bytecode.ts

@@ -1,30 +1,22 @@
 import path from 'node:path'
 import { randomBytes } from 'node:crypto'
-import { createRequire } from 'node:module'
 import colors from 'picocolors'
-import { type Plugin, type Rolldown, normalizePath } from 'vite'
-import type * as Babel from '@babel/core'
+import { type Plugin, type LibraryOptions, type Rolldown, normalizePath } from 'vite'
+import * as babel from '@babel/core'
 import MagicString from 'magic-string'
-import { toRelativePath, resolveBuildOutputs } from '../utils'
-import type { BytecodeCompiler, BytecodeTarget } from '../bytecodeCompiler'
+import { toRelativePath } from '../utils'
+import { type BytecodeBuild, getBytecodeBuild } from '../bytecode/build'
+import { type BytecodeTarget } from '../bytecode/compiler'
 
 // Inspired by https://github.com/bytenode/bytenode
 
-const require = createRequire(import.meta.url)
-let babel: typeof Babel | undefined
-
-function getBytecodeCompiler(plugins: readonly Plugin[]): BytecodeCompiler | undefined {
-  const plugin = plugins.find(plugin => plugin.name === 'vite:electron-bytecode-build')
-  return (plugin?.api as { compiler?: BytecodeCompiler } | undefined)?.compiler
-}
-
 // Versioned envelope: magic/version (8), UTF-16 source length (4), module ID (16), V8 cache.
 // Keep our metadata separate from the private V8 cache header.
-async function compileToBytecode(compiler: BytecodeCompiler, target: BytecodeTarget, code: string): Promise<Buffer> {
+async function compileToBytecode(builder: BytecodeBuild, target: BytecodeTarget, code: string): Promise<Buffer> {
   const id = randomBytes(16)
   // Reserve enough source space for an untruncated, per-artifact placeholder identity.
   const source = code + '\n/*' + id.toString('hex') + '*/'
-  const result = await compiler.compile(target, source)
+  const result = await builder.compile(target, source)
   const header = Buffer.alloc(28)
   header.write('EVBC0001', 0, 'ascii')
   header.writeUInt32LE(result.sourceLength, 8)
@@ -101,14 +93,14 @@ export function bytecodePlugin(options: BytecodeOptions = {}): Plugin | null {
     return _chunkAlias.length === 0 || _chunkAlias.some(alias => alias === chunkName)
   }
 
-  const plugins: Babel.PluginItem[] = []
+  const plugins: babel.PluginItem[] = []
 
   if (transformArrowFunctions) {
     plugins.push('@babel/plugin-transform-arrow-functions')
   }
 
   if (protectedStrings.length > 0) {
-    plugins.push([protectStringsPlugin as Babel.PluginTarget, { protectedStrings: new Set(protectedStrings) }])
+    plugins.push([protectStringsPlugin as babel.PluginTarget, { protectedStrings: new Set(protectedStrings) }])
   }
 
   const shouldTransformBytecodeChunk = plugins.length !== 0
@@ -117,7 +109,6 @@ export function bytecodePlugin(options: BytecodeOptions = {}): Plugin | null {
     code: string,
     sourceMaps: boolean = false
   ): { code: string; map?: Rolldown.SourceMapInput } | null => {
-    babel ??= require('@babel/core') as typeof Babel
     const re = babel.transformSync(code, { plugins, sourceMaps })
     return re ? { code: re.code || '', map: re.map as Rolldown.SourceMapInput } : null
   }
@@ -127,14 +118,12 @@ export function bytecodePlugin(options: BytecodeOptions = {}): Plugin | null {
 
   let supported = false
   let isPreload = false
-  let bytecodeCompiler: BytecodeCompiler | undefined
 
   return {
     name: 'vite:bytecode',
     apply: 'build',
     enforce: 'post',
     configResolved(config): void {
-      bytecodeCompiler = getBytecodeCompiler(config.plugins)
       if (supported) {
         return
       }
@@ -145,9 +134,10 @@ export function bytecodePlugin(options: BytecodeOptions = {}): Plugin | null {
         return
       }
       const build = config.build
-      const outputs = resolveBuildOutputs(build.rolldownOptions.output, build.lib)
-      const output = outputs[0]
-      if (output) {
+      const resolvedOutputs = resolveBuildOutputs(build.rolldownOptions.output, build.lib)
+      if (resolvedOutputs) {
+        const outputs = Array.isArray(resolvedOutputs) ? resolvedOutputs : [resolvedOutputs]
+        const output = outputs[0]
         if (output.format === 'es') {
           config.logger.warn(
             colors.yellow(
@@ -192,8 +182,9 @@ export function bytecodePlugin(options: BytecodeOptions = {}): Plugin | null {
 
       const bundles = Object.keys(output)
 
-      if (!bytecodeCompiler) {
-        throw new Error('Bytecode compilation requires an electron-vite build')
+      const compiler = getBytecodeBuild()
+      if (!compiler) {
+        throw new Error('Bytecode compilation requires an electron-vite build session')
       }
       for (const name of bundles) {
         const chunk = output[name]
@@ -215,7 +206,7 @@ export function bytecodePlugin(options: BytecodeOptions = {}): Plugin | null {
             }
           }
           if (bytecodeChunks.includes(name)) {
-            const bytecodeBuffer = await compileToBytecode(bytecodeCompiler, isPreload ? 'preload' : 'main', _code)
+            const bytecodeBuffer = await compileToBytecode(compiler, isPreload ? 'preload' : 'main', _code)
             this.emitFile({
               type: 'asset',
               fileName: name + 'c',
@@ -284,14 +275,25 @@ export function bytecodePlugin(options: BytecodeOptions = {}): Plugin | null {
   }
 }
 
-interface ProtectStringsPluginState extends Babel.PluginPass {
+function resolveBuildOutputs(
+  outputs: Rolldown.OutputOptions | Rolldown.OutputOptions[] | undefined,
+  libOptions: LibraryOptions | false
+): Rolldown.OutputOptions | Rolldown.OutputOptions[] | undefined {
+  if (libOptions && !Array.isArray(outputs)) {
+    const libFormats = libOptions.formats || []
+    return libFormats.map(format => ({ ...outputs, format }))
+  }
+  return outputs
+}
+
+interface ProtectStringsPluginState extends babel.PluginPass {
   opts: { protectedStrings: Set<string> }
 }
 
-function protectStringsPlugin(api: typeof Babel & Babel.ConfigAPI): Babel.PluginObj<ProtectStringsPluginState> {
+function protectStringsPlugin(api: typeof babel & babel.ConfigAPI): babel.PluginObj<ProtectStringsPluginState> {
   const { types: t } = api
 
-  function createFromCharCodeFunction(value: string): Babel.types.CallExpression {
+  function createFromCharCodeFunction(value: string): babel.types.CallExpression {
     const charCodes = Array.from(value).map(s => s.charCodeAt(0))
     const charCodeLiterals = charCodes.map(code => t.numericLiteral(code))
 

src/plugins/electron.ts

@@ -2,9 +2,9 @@ import path from 'node:path'
 import fs from 'node:fs'
 import { builtinModules } from 'node:module'
 import colors from 'picocolors'
-import { type Plugin, type UserConfig, mergeConfig, normalizePath } from 'vite'
+import { type Plugin, type LibraryOptions, type Rolldown, type UserConfig, mergeConfig, normalizePath } from 'vite'
 import { getElectronNodeTarget, getElectronChromeTarget, supportESM } from '../electron'
-import { loadPackageData, resolveBuildOutputs } from '../utils'
+import { loadPackageData } from '../utils'
 
 export interface ElectronPluginOptions {
   root?: string
@@ -38,6 +38,17 @@ function processEnvDefine(): Record<string, string> {
   }
 }
 
+function resolveBuildOutputs(
+  outputs: Rolldown.OutputOptions | Rolldown.OutputOptions[] | undefined,
+  libOptions: LibraryOptions | false
+): Rolldown.OutputOptions | Rolldown.OutputOptions[] | undefined {
+  if (libOptions && !Array.isArray(outputs)) {
+    const libFormats = libOptions.formats || []
+    return libFormats.map(format => ({ ...outputs, format }))
+  }
+  return outputs
+}
+
 export function electronMainConfigPresetPlugin(options?: ElectronPluginOptions): Plugin {
   return {
     name: 'vite:electron-main-config-preset',
@@ -137,15 +148,16 @@ export function electronMainConfigValidatorPlugin(): Plugin {
         )
       }
 
-      const outputs = resolveBuildOutputs(rolldownOptions.output, libOptions)
+      const resolvedOutputs = resolveBuildOutputs(rolldownOptions.output, libOptions)
 
-      if (outputs.length > 0) {
+      if (resolvedOutputs) {
+        const outputs = Array.isArray(resolvedOutputs) ? resolvedOutputs : [resolvedOutputs]
         if (outputs.length > 1) {
           throw new Error('The electron vite main config does not support multiple outputs.')
         } else {
-          const output = outputs[0]
-          if (['es', 'cjs'].includes(output.format || '')) {
-            if (output.format === 'es' && !supportESM()) {
+          const outpout = outputs[0]
+          if (['es', 'cjs'].includes(outpout.format || '')) {
+            if (outpout.format === 'es' && !supportESM()) {
               throw new Error(
                 'The electron vite main config output format does not support "es", ' +
                   'you can upgrade electron to the latest version or switch to "cjs" format.'
@@ -220,21 +232,25 @@ export function electronPreloadConfigPresetPlugin(options?: ElectronPluginOption
       const buildConfig = mergeConfig(defaultConfig.build, build)
       config.build = buildConfig
 
-      const outputs = resolveBuildOutputs(config.build.rolldownOptions!.output, config.build.lib)
+      const resolvedOutputs = resolveBuildOutputs(config.build.rolldownOptions!.output, config.build.lib || false)
 
-      if (outputs.some(({ format }) => format === 'es')) {
-        if (Array.isArray(config.build.rolldownOptions!.output)) {
-          config.build.rolldownOptions!.output.forEach(output => {
-            if (output.format === 'es') {
-              output['entryFileNames'] = '[name].mjs'
-              output['chunkFileNames'] = '[name]-[hash].mjs'
-            }
-          })
-        } else {
-          config.build.rolldownOptions!.output!['entryFileNames'] = '[name].mjs'
-          config.build.rolldownOptions!.output!['chunkFileNames'] = config.build.lib
-            ? '[name]-[hash].mjs'
-            : path.posix.join(build.assetsDir || defaultConfig.build.assetsDir, '[name]-[hash].mjs')
+      if (resolvedOutputs) {
+        const outputs = Array.isArray(resolvedOutputs) ? resolvedOutputs : [resolvedOutputs]
+
+        if (outputs.find(({ format }) => format === 'es')) {
+          if (Array.isArray(config.build.rolldownOptions!.output)) {
+            config.build.rolldownOptions!.output.forEach(output => {
+              if (output.format === 'es') {
+                output['entryFileNames'] = '[name].mjs'
+                output['chunkFileNames'] = '[name]-[hash].mjs'
+              }
+            })
+          } else {
+            config.build.rolldownOptions!.output!['entryFileNames'] = '[name].mjs'
+            config.build.rolldownOptions!.output!['chunkFileNames'] = config.build.lib
+              ? '[name]-[hash].mjs'
+              : path.posix.join(build.assetsDir || defaultConfig.build.assetsDir, '[name]-[hash].mjs')
+          }
         }
       }
 
@@ -286,15 +302,16 @@ export function electronPreloadConfigValidatorPlugin(): Plugin {
         )
       }
 
-      const outputs = resolveBuildOutputs(rolldownOptions.output, libOptions)
+      const resolvedOutputs = resolveBuildOutputs(rolldownOptions.output, libOptions)
 
-      if (outputs.length > 0) {
+      if (resolvedOutputs) {
+        const outputs = Array.isArray(resolvedOutputs) ? resolvedOutputs : [resolvedOutputs]
         if (outputs.length > 1) {
           throw new Error('The electron vite preload config does not support multiple outputs.')
         } else {
-          const output = outputs[0]
-          if (['es', 'cjs'].includes(output.format || '')) {
-            if (output.format === 'es' && !supportESM()) {
+          const outpout = outputs[0]
+          if (['es', 'cjs'].includes(outpout.format || '')) {
+            if (outpout.format === 'es' && !supportESM()) {
               throw new Error(
                 'The electron vite preload config output format does not support "es", ' +
                   'you can upgrade electron to the latest version or switch to "cjs" format.'

src/plugins/swc.ts

@@ -105,7 +105,7 @@ export function swcPlugin(options: SwcOptions = {}): Plugin {
       }
     },
     async renderChunk(code, chunk): Promise<null | { code: string; map: SourceMap }> {
-      if (!minify || minify === 'terser' || minify === 'oxc') {
+      if (!minify || minify === 'terser') {
         return null
       }
       const result = await transformWithSWC(code, chunk.fileName, {

src/utils.ts

@@ -3,7 +3,7 @@ import path from 'node:path'
 import fs from 'node:fs'
 import { createHash } from 'node:crypto'
 import { createRequire } from 'node:module'
-import { type LibraryOptions, type Rolldown, loadEnv as viteLoadEnv } from 'vite'
+import { loadEnv as viteLoadEnv } from 'vite'
 
 export function isObject(value: unknown): value is Record<string, unknown> {
   return Object.prototype.toString.call(value) === '[object Object]'
@@ -32,23 +32,6 @@ export function toRelativePath(filename: string, importer: string): string {
   return relPath.startsWith('.') ? relPath : `./${relPath}`
 }
 
-/**
- * Resolve configured build outputs into an array.
- */
-export function resolveBuildOutputs(
-  outputs: Rolldown.OutputOptions | Rolldown.OutputOptions[] | undefined,
-  libOptions: LibraryOptions | false | undefined
-): Rolldown.OutputOptions[] {
-  if (Array.isArray(outputs)) {
-    return outputs
-  }
-  if (libOptions) {
-    const libFormats = libOptions.formats || []
-    return libFormats.map(format => ({ ...outputs, format }))
-  }
-  return outputs ? [outputs] : []
-}
-
 /**
  * Load `.env` files within the `envDir` (default: `process.cwd()`) .
  * By default, only env variables prefixed with `VITE_`, `MAIN_VITE_`, `PRELOAD_VITE_` and