bugfix for MIME

Author: terapyon

package.json

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

src/index.ts

@@ -1,9 +1,41 @@
 // Copyright (c) Manabu TERADA
 // Distributed under the terms of the Modified BSD License.
 
-// Export MIME extension as default for JupyterLab to load
-export { default } from './mime';
+import {
+  JupyterFrontEnd,
+  JupyterFrontEndPlugin,
+} from '@jupyterlab/application';
+
+import { IRenderMimeRegistry } from '@jupyterlab/rendermime';
+import { NetVisRenderer, MIME_TYPE } from './renderer';
 
 // Export other modules for backward compatibility
 export * from './version';
 export * from './widget';
+
+/**
+ * The NetVis MIME renderer extension.
+ */
+const mimeExtension: JupyterFrontEndPlugin<void> = {
+  id: 'net_vis:mime',
+  autoStart: true,
+  requires: [IRenderMimeRegistry],
+  activate: (
+    app: JupyterFrontEnd,
+    rendermime: IRenderMimeRegistry,
+  ): void => {
+    // Register MIME renderer for _repr_mimebundle_
+    rendermime.addFactory(
+      {
+        safe: true,
+        mimeTypes: [MIME_TYPE],
+        createRenderer: (options) => new NetVisRenderer(options),
+      },
+      0, // rank: 0 means highest priority
+    );
+
+    console.log('NetVis MIME renderer registered');
+  },
+};
+
+export default mimeExtension;