Resolve static file to full path using the baseUrl (jupyter-server#302)

src/pixiedustshim.ts

@@ -16,6 +16,7 @@ import { ICellModel, ICodeCellModel } from '@jupyterlab/cells';
 import { INotebookTracker, NotebookPanel } from '@jupyterlab/notebook';
 import { ExperimentalRenderedJavascript } from '@jupyterlab/javascript-extension';
 import { resourceLoader, overrideCssScope, findStyleSheetByUrl } from './utils';
+import { PageConfig, URLExt } from '@jupyterlab/coreutils';
 
 const PIXIEDUST = 'pixiedust';
 
@@ -474,12 +475,19 @@ export const NotebookPixiedustShimPlugin: JupyterFrontEndPlugin<void> = {
   autoStart: true,
   requires: [INotebookTracker],
   activate: (app: JupyterFrontEnd, tracker: INotebookTracker) => {
-    const scripts = ['/static/notebook/components/requirejs/require.js'];
+    const baseUrl = PageConfig.getBaseUrl();
+    const getFullPath = (path: string) => URLExt.join(baseUrl, path);
+
+    const scripts = [
+      getFullPath('/static/notebook/components/requirejs/require.js')
+    ];
 
     // Important: Do not change the css load order
     const css = [
-      '/static/notebook/style/style.min.css',
-      '/static/notebook/components/jquery-ui/themes/smoothness/jquery-ui.min.css'
+      getFullPath('/static/notebook/style/style.min.css'),
+      getFullPath(
+        '/static/notebook/components/jquery-ui/themes/smoothness/jquery-ui.min.css'
+      )
     ];
 
     _addNotebookShim(tracker);