esm: expose User-Agent header

Author: Fyko

lib/internal/modules/esm/fetch_module.js

@@ -52,6 +52,9 @@ function HTTPSGet(url, opts) {
   });
   return https.get(url, {
     agent: HTTPSAgent,
+    headers: {
+      'User-Agent': `Node.js/${process.version}`,
+    },
     ...opts,
   });
 }
@@ -64,6 +67,9 @@ function HTTPGet(url, opts) {
   });
   return http.get(url, {
     agent: HTTPAgent,
+    headers: {
+      'User-Agent': `Node.js/${process.version}`,
+    },
     ...opts,
   });
 }