build: add backward compatible types for /proxy subpath export

Author: pi0

package.json

@@ -111,7 +111,8 @@
     "lib",
     "index.d.ts",
     "node.d.ts",
-    "polyfill.d.ts"
+    "polyfill.d.ts",
+    "proxy.d.ts"
   ],
   "scripts": {
     "build": "unbuild",
@@ -140,4 +141,4 @@
     "vitest": "^1.1.0"
   },
   "packageManager": "pnpm@8.12.1"
-}
+}

proxy.d.ts

@@ -0,0 +1 @@
+export * from "./lib/proxy.mjs";