fix: use config.consumer instead of options?.ssr / config.build.ssr (#18140)

Author: sapphi-red

packages/vite/src/node/plugins/css.ts

@@ -452,7 +452,7 @@ export function cssPostPlugin(config: ResolvedConfig): Plugin {
       codeSplitEmitQueue = createSerialPromiseQueue()
     },
 
-    async transform(css, id, options) {
+    async transform(css, id) {
       if (
         !isCSSRequest(id) ||
         commonjsProxyRE.test(id) ||
@@ -510,7 +510,7 @@ export function cssPostPlugin(config: ResolvedConfig): Plugin {
           return null
         }
         // server only
-        if (options?.ssr) {
+        if (this.environment.config.consumer !== 'client') {
           return modulesCode || `export default ${JSON.stringify(css)}`
         }
         if (inlined) {
@@ -783,7 +783,7 @@ export function cssPostPlugin(config: ResolvedConfig): Plugin {
             })
             generatedAssets.set(referenceId, { originalFileName, isEntry })
             chunk.viteMetadata!.importedCss.add(this.getFileName(referenceId))
-          } else if (!config.build.ssr) {
+          } else if (this.environment.config.consumer === 'client') {
             // legacy build and inline css
 
             // Entry chunk CSS will be collected into `chunk.viteMetadata.importedCss`

packages/vite/src/node/plugins/importAnalysisBuild.ts

@@ -18,6 +18,7 @@ import type { Plugin } from '../plugin'
 import type { ResolvedConfig } from '../config'
 import { toOutputFilePathInJS } from '../build'
 import { genSourceMapUrl } from '../server/sourcemap'
+import type { Environment } from '../environment'
 import { removedPureCssFilesCache } from './css'
 import { createParseErrorInfo } from './importAnalysis'
 
@@ -169,9 +170,10 @@ function preload(
  * Build only. During serve this is performed as part of ./importAnalysis.
  */
 export function buildImportAnalysisPlugin(config: ResolvedConfig): Plugin {
-  const ssr = !!config.build.ssr
-  const isWorker = config.isWorker
-  const insertPreload = !(ssr || !!config.build.lib || isWorker)
+  const getInsertPreload = (environment: Environment) =>
+    environment.config.consumer === 'client' &&
+    !config.isWorker &&
+    !config.build.lib
 
   const renderBuiltUrl = config.experimental.renderBuiltUrl
   const isRelativeBase = config.base === './' || config.base === ''
@@ -237,6 +239,7 @@ export function buildImportAnalysisPlugin(config: ResolvedConfig): Plugin {
         return null
       }
 
+      const insertPreload = getInsertPreload(this.environment)
       // when wrapping dynamic imports with a preload helper, Rollup is unable to analyze the
       // accessed variables for treeshaking. This below tries to match common accessed syntax
       // to "copy" it over to the dynamic import wrapped by the preload helper.
@@ -402,7 +405,7 @@ export function buildImportAnalysisPlugin(config: ResolvedConfig): Plugin {
 
       // If preload is not enabled, we parse through each imports and remove any imports to pure CSS chunks
       // as they are removed from the bundle
-      if (!insertPreload) {
+      if (!getInsertPreload(this.environment)) {
         const removedPureCssFiles = removedPureCssFilesCache.get(config)
         if (removedPureCssFiles && removedPureCssFiles.size > 0) {
           for (const file in bundle) {

packages/vite/src/node/plugins/modulePreloadPolyfill.ts

@@ -6,8 +6,6 @@ export const modulePreloadPolyfillId = 'vite/modulepreload-polyfill'
 const resolvedModulePreloadPolyfillId = '\0' + modulePreloadPolyfillId + '.js'
 
 export function modulePreloadPolyfillPlugin(config: ResolvedConfig): Plugin {
-  // `isModernFlag` is only available during build since it is resolved by `vite:build-import-analysis`
-  const skip = config.command !== 'build' || config.build.ssr
   let polyfillString: string | undefined
 
   return {
@@ -19,7 +17,11 @@ export function modulePreloadPolyfillPlugin(config: ResolvedConfig): Plugin {
     },
     load(id) {
       if (id === resolvedModulePreloadPolyfillId) {
-        if (skip) {
+        // `isModernFlag` is only available during build since it is resolved by `vite:build-import-analysis`
+        if (
+          config.command !== 'build' ||
+          this.environment.config.consumer !== 'client'
+        ) {
           return ''
         }
         if (!polyfillString) {

packages/vite/src/node/plugins/preAlias.ts

@@ -28,7 +28,7 @@ export function preAliasPlugin(config: ResolvedConfig): Plugin {
     name: 'vite:pre-alias',
     async resolveId(id, importer, options) {
       const { environment } = this
-      const ssr = options?.ssr === true
+      const ssr = environment.config.consumer === 'server'
       const depsOptimizer =
         environment.mode === 'dev' ? environment.depsOptimizer : undefined
       if (

packages/vite/src/node/plugins/reporter.ts

@@ -93,7 +93,7 @@ export function buildReporterPlugin(config: ResolvedConfig): Plugin {
       code: string | Uint8Array,
     ): Promise<number | null> {
       if (
-        environment.config.build.ssr ||
+        environment.config.consumer !== 'client' ||
         !environment.config.build.reportCompressedSize
       ) {
         return null
@@ -255,7 +255,7 @@ export function buildReporterPlugin(config: ResolvedConfig): Plugin {
           hasLargeChunks &&
           environment.config.build.minify &&
           !config.build.lib &&
-          !environment.config.build.ssr
+          environment.config.consumer === 'client'
         ) {
           environment.logger.warn(
             colors.yellow(