chore: add build.ssrEmitAssets experimental option

vitejs · Jan 25, 2023 · 7b8b0f9 · 7b8b0f9
1 parent a1ad5a2
commit 7b8b0f9
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diff --git a/packages/vite/src/node/build.ts b/packages/vite/src/node/build.ts
@@ -208,6 +208,12 @@ export interface BuildOptions {
    * directives in production.
    */
   ssrManifest?: boolean | string
+  /**
+   * Emit assets during SSR.
+   * @experimental
+   * @default false
+   */
+  ssrEmitAssets?: boolean
   /**
    * Set to false to disable reporting compressed chunk sizes.
    * Can slightly improve build speed.
@@ -324,6 +330,7 @@ export function resolveBuildOptions(
     lib: false,
     ssr: false,
     ssrManifest: false,
+    ssrEmitAssets: false,
     reportCompressedSize: true,
     chunkSizeWarningLimit: 500,
     watch: null,

diff --git a/packages/vite/src/node/plugins/asset.ts b/packages/vite/src/node/plugins/asset.ts
@@ -23,6 +23,7 @@ export const assetUrlRE = /__VITE_ASSET__([a-z\d]+)__(?:\$_(.*?)__)?/g
 
 const rawRE = /(?:\?|&)raw(?:&|$)/
 const urlRE = /(\?|&)url(?:&|$)/
+const jsSourceMapRE = /\.[cm]?js\.map$/
 
 const assetCache = new WeakMap<ResolvedConfig, Map<string, string>>()
 
@@ -183,6 +184,25 @@ export function assetPlugin(config: ResolvedConfig): Plugin {
         return null
       }
     },
+
+    generateBundle(_, bundle) {
+      // do not emit assets for SSR build
+      if (
+        config.command === 'build' &&
+        config.build.ssr &&
+        !config.build.ssrEmitAssets
+      ) {
+        for (const file in bundle) {
+          if (
+            bundle[file].type === 'asset' &&
+            !file.endsWith('ssr-manifest.json') &&
+            !jsSourceMapRE.test(file)
+          ) {
+            delete bundle[file]
+          }
+        }
+      }
+    },
   }
 }