fix: skip asset emit for legacy output

fix: #3296
vitejs · May 9, 2021 · 8d6d810 · 8d6d810
1 parent d555dd6
commit 8d6d810
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diff --git a/packages/plugin-legacy/index.js b/packages/plugin-legacy/index.js
@@ -219,6 +219,9 @@ function viteLegacyPlugin(options = {}) {
       // @ts-ignore avoid esbuild transform on legacy chunks since it produces
       // legacy-unsafe code - e.g. rewriting object properties into shorthands
       opts.__vite_skip_esbuild__ = true
+      // @ts-ignore
+      // inject flag to prevent emit assets for legacy bundle
+      opts.__vite_legacy = true
 
       const needPolyfills =
         options.polyfills !== false && !Array.isArray(options.polyfills)

diff --git a/packages/vite/src/node/plugins/css.ts b/packages/vite/src/node/plugins/css.ts
@@ -392,6 +392,10 @@ export function cssPostPlugin(config: ResolvedConfig): Plugin {
     },
 
     async generateBundle(opts, bundle) {
+      // @ts-ignore injected by @vitejs/plugin-legacy
+      if (opts.__vite_legacy) {
+        return
+      }
       // remove empty css chunks and their imports
       if (pureCssChunks.size) {
         const emptyChunkFiles = [...pureCssChunks]