bugfix for js

Author: terapyon

package.json

@@ -96,8 +96,7 @@
     "@lumino/widgets": "pinned to the latest Lumino 1.x release"
   },
   "jupyterlab": {
-    "extension": true,
-    "mimeExtension": true,
+    "mimeExtension": "lib/mime",
     "outputDir": "net_vis/labextension/",
     "sharedPackages": {
       "@jupyter-widgets/base": {

src/index.ts

@@ -1,8 +1,8 @@
 // Copyright (c) Manabu TERADA
 // Distributed under the terms of the Modified BSD License.
 
-// Export plugin as default for JupyterLab to load
-export { default } from './plugin';
+// Export MIME extension as default for JupyterLab to load
+export { default } from './mime';
 
 // Export other modules for backward compatibility
 export * from './version';