fix(plugin-legacy): fix legacy plugin not working in worker context

vitejs · Jan 8, 2025 · 88540b1 · 88540b1
1 parent f7b1964
commit 88540b1
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diff --git a/packages/plugin-legacy/src/index.ts b/packages/plugin-legacy/src/index.ts
@@ -270,6 +270,13 @@ function viteLegacyPlugin(options: Options = {}): Plugin[] {
           ),
         )
       }
+      if (config.isWorker) {
+        config.logger.warn(
+          colors.yellow(
+            `Workers are not supported when generating legacy chunks. Ensure that workers are not used in your application when targeting legacy browsers.`,
+          ),
+        )
+      }
     },
   }
 

diff --git a/packages/vite/src/node/plugins/esbuild.ts b/packages/vite/src/node/plugins/esbuild.ts
@@ -336,6 +336,10 @@ export const buildEsbuildPlugin = (): Plugin => {
         return null
       }
 
+      if (chunk.name === 'worker' && opts.format === 'iife') {
+        options.format = 'iife'
+      }
+
       const res = await transformWithEsbuild(
         code,
         chunk.fileName,