chore(medusa): upgrade medusa build (#7425)

packages/medusa/package.json

@@ -53,6 +53,7 @@
     "@medusajs/utils": "^1.11.9",
     "@medusajs/workflows-sdk": "^0.1.6",
     "@swc/core": "^1.4.8",
+    "@swc/helpers": "^0.5.11",
     "awilix": "^8.0.0",
     "body-parser": "^1.19.0",
     "boxen": "^5.0.1",

packages/medusa/src/commands/build.ts

@@ -97,6 +97,8 @@ const medusaTransform = async (file: string) => {
         transform: {
           decoratorMetadata: true,
         },
+        target: "es2021",
+        externalHelpers: true,
       },
     })
     await writeToOut(file, output.code, {