Seems to be working on jupyterlab version 2.0.2

Author: Itai Stopel

package.json

@@ -31,18 +31,19 @@
     "watch": "tsc -w"
   },
   "dependencies": {
-    "@jupyterlab/application": "^1.0.0",
-    "@jupyterlab/apputils": "^1.0.0",
-    "@jupyterlab/coreutils": "^3.0.0",
-    "@jupyterlab/docmanager": "^1.0.0",
-    "@jupyterlab/filebrowser": "^1.0.1",
-    "@jupyterlab/services": "^4.0.0",
-    "@phosphor/messaging": "^1.2.3",
-    "@phosphor/widgets": "^1.8.1"
+    "@jupyterlab/application": "^2.0.2",
+    "@jupyterlab/apputils": "^2.0.2",
+    "@jupyterlab/coreutils": "^4.0.2",
+    "@jupyterlab/settingregistry": "^2.0.1",
+    "@jupyterlab/docmanager": "^2.0.2",
+    "@jupyterlab/filebrowser": "^2.0.2",
+    "@jupyterlab/services": "^5.0.2",
+    "@lumino/messaging": "^1.3.3",
+    "@lumino/widgets": "^1.11.1"
   },
   "devDependencies": {
     "rimraf": "^2.6.1",
-    "typescript": "~3.5.2"
+    "typescript": "~3.7.2"
   },
   "jupyterlab": {
     "extension": true,

src/index.ts

@@ -1,14 +1,15 @@
 import { ILabShell, JupyterFrontEnd, JupyterFrontEndPlugin } from "@jupyterlab/application";
 import { ICommandPalette } from "@jupyterlab/apputils";
-import { ISettingRegistry, URLExt, PathExt } from "@jupyterlab/coreutils";
+import { URLExt, PathExt } from "@jupyterlab/coreutils";
 import { IDocumentManager } from "@jupyterlab/docmanager";
 import { ServerConnection } from "@jupyterlab/services";
+import { ISettingRegistry } from "@jupyterlab/settingregistry";
 import { FileBrowser, IFileBrowserFactory } from '@jupyterlab/filebrowser';
-import { CommandRegistry } from "@phosphor/commands";
-import { ReadonlyJSONObject } from "@phosphor/coreutils";
-import { Message } from "@phosphor/messaging";
-import { ISignal, Signal } from "@phosphor/signaling";
-import { CommandPalette } from "@phosphor/widgets";
+import { CommandRegistry } from "@lumino/commands";
+import { ReadonlyJSONObject } from "@lumino/coreutils";
+import { Message } from "@lumino/messaging";
+import { ISignal, Signal } from "@lumino/signaling";
+import { CommandPalette } from "@lumino/widgets";
 import "../style/index.css";
 
 /** Structure of the JSON response from the server */

tsconfig.json

@@ -1,5 +1,6 @@
 {
   "compilerOptions": {
+    "allowSyntheticDefaultImports": true,
     "declaration": true,
     "lib": ["es2017", "dom"],
     "module": "commonjs",