fix: force esbuild to output ES2019 (#155)

Rollup does not appear to support optional chaining (`foo?.bar`). Work around this by lowering the esbuild target to ES2019 Related: rollup/plugins#205
vitejs · May 17, 2020 · 00f4a83 · 00f4a83
1 parent bdc7e70
commit 00f4a83
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/node/esbuildService.ts b/src/node/esbuildService.ts
@@ -62,7 +62,8 @@ export const transform = async (
     ...options,
     loader: options.loader || (path.extname(file).slice(1) as any),
     sourcemap: true,
-    sourcefile: file
+    sourcefile: file,
+    target: 'es2019'
   }
   try {
     const result = await service.transform(src, options)