fixes

package.json

@@ -86,11 +86,11 @@
         "@jupyterlab/application": "^4.0.4",
         "@jupyterlab/apputils": "^4.1.4",
         "@jupyterlab/observables": "^5.0.4",
-        "@lumino/algorithm": "^2.0.0",
-        "@lumino/commands": "^2.0.1",
-        "@lumino/disposable": "^2.0.0",
-        "@lumino/messaging": "^2.0.0",
-        "@lumino/widgets": "^2.0.1"
+        "@lumino/algorithm": "^1.9.2 || ^2",
+        "@lumino/commands": "^1.20.1 || ^2",
+        "@lumino/disposable": "^1.10.2 || ^2",
+        "@lumino/messaging": "^1.10.2 || ^2",
+        "@lumino/widgets": "^1.34.0 || ^2"
     },
     "devDependencies": {
         "@jupyterlab/builder": "^4.0.0",

src/widgets/sessions.ts

@@ -3,7 +3,6 @@
 
 // SessionManager exposes `JupyterLab.serviceManager.sessions` to user python kernel
 
-import { SessionManager } from '@jupyterlab/services';
 import { ISerializers, WidgetModel } from '@jupyter-widgets/base';
 import { toArray } from '@lumino/algorithm';
 import { MODULE_NAME, MODULE_VERSION } from '../version';
@@ -132,8 +131,8 @@ export class SessionManagerModel extends WidgetModel {
   static view_module_version = MODULE_VERSION;
 
   private _current_session: Session.IModel | Record<string, unknown>;
-  private _sessions: SessionManager;
-  static sessions: SessionManager;
+  private _sessions: Session.IManager;
+  static sessions: Session.IManager;
   private _shell: JupyterFrontEnd.IShell;
   private _labShell: ILabShell | null;
   static shell: JupyterFrontEnd.IShell;

tsconfig.json

@@ -1,23 +1,20 @@
 {
   "compilerOptions": {
-    "allowSyntheticDefaultImports": true,
-    "composite": true,
     "declaration": true,
     "esModuleInterop": true,
-    "incremental": true,
-    "jsx": "react",
     "module": "esnext",
     "moduleResolution": "node",
     "noEmitOnError": true,
-    "noImplicitAny": true,
     "noUnusedLocals": true,
-    "preserveWatchOutput": true,
-    "resolveJsonModule": true,
     "outDir": "lib",
+    "resolveJsonModule": true,
     "rootDir": "src",
+    "skipLibCheck": true,
+    "sourceMap": true,
     "strict": true,
-    "strictNullChecks": true,
-    "target": "ES2018"
+    "strictNullChecks": false,
+    "strictPropertyInitialization": false,
+    "target": "es2017"
   },
-  "include": ["src/*"]
+  "include": ["src/**/*.ts", "src/**/*.tsx"]
 }