Cleanup

.eslintrc.js

@@ -22,7 +22,6 @@ module.exports = {
   },
   plugins: ['@typescript-eslint', 'jest'],
   rules: {
-    'jest/no-done-callback': 'off',
     '@typescript-eslint/naming-convention': [
       'error',
       {
@@ -45,6 +44,7 @@ module.exports = {
       'single',
       { avoidEscape: true, allowTemplateLiterals: false }
     ],
+    'jest/no-done-callback': 'off',
     curly: ['error', 'all'],
     eqeqeq: 'error',
     'prefer-arrow-callback': 'error'

app/package.json

@@ -118,11 +118,8 @@
     "@retrolab/ui-components": "^0.3.0-alpha.2"
   },
   "devDependencies": {
-    "@babel/core": "^7.11.6",
-    "@babel/preset-env": "^7.12.1",
     "@jupyterlab/builder": "^3.1.0-beta.0",
     "@jupyterlab/buildutils": "^3.1.0-beta.0",
-    "@jupyterlab/testutils": "^3.1.0-beta.0",
     "@playwright/test": "^1.12.3",
     "@types/rimraf": "^3.0.0",
     "css-loader": "~5.0.1",