exports.node should be considered node platform

[BasixKOR]

Minimal reproduction: https://stackblitz.com/edit/node-h1e2ll (broken in browser; please download)

It seems like the platform of the entry doesn't take node condition into account.

[BasixKOR]

Proposed patch:

diff --git a/bin.mjs b/bin.mjs
index 57bd96f6f8dff4f700b12a5a40572ea38f09b46d..929c72a9b9ae459cb0829ad6aac4567703641427 100644
--- a/bin.mjs
+++ b/bin.mjs
@@ -279,8 +279,12 @@ Or you may not need to specify "require" or "node" entries.
   }
   function addNodeEntry(key, output) {
     const ext = path.extname(output);
-    if (ext === ".js" || ext === ".cjs" || ext === ".node") {
-      addEntry(key, output, "node", "commonjs");
+    if (ext === ".js") {
+      addEntry(key, output, "node", defaultModule);
+    } else if (ext === ".cjs" || ext === ".node") {
+      addEntry(key, output, "node", "commonjs")
+    } else if (ext === ".mjs") {
+      addEntry(key, output, "node", "esmodule");
     }
   }
   if (config.main) {
@@ -299,6 +303,8 @@ Or you may not need to specify "require" or "node" entries.
             addModuleEntry(`exports["${key}"]`, output);
           } else if (key === "require") {
             addNodeEntry(`exports["${key}"]`, output);
+          } else if (key === "node") {
+            addNodeEntry(`exports["${key}"]`, output);
           } else {
             addMainEntry(`exports["${key}"]`, output);
           }

[cometkim]

This will be handled in #44

[cometkim]

Hey @BasixKOR , nanobundle@rc is now available :)