Merge pull request #5 from k-yle/systemjs-missing

fix: broken build when renderModernChunks=false & polyfills=false
CyanSalt · Oct 7, 2023 · a11983b · a11983b
2 parents d0813b1 + f32154f
commit a11983b
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/index.ts b/src/index.ts
@@ -266,15 +266,17 @@ function viteLegacyPlugin(options: Options = {}): Plugin[] {
       }
 
       // legacy bundle
-      if (legacyPolyfills.size) {
+      if (options.polyfills !== false) {
         // check if the target needs Promise polyfill because SystemJS relies on it
         // /~https://github.com/systemjs/systemjs#ie11-support
         await detectPolyfills(
           `Promise.resolve(); Promise.all();`,
           targets,
           legacyPolyfills,
         )
+      }
 
+      if (legacyPolyfills.size || !options.externalSystemJS) {
         if (isDebug) {
           console.log(
             `[vite-plugin-legacy-swc] legacy polyfills:`,