Migrate to merged proposals now included in babel/present-env

Bump core-js too.

frontend/babel.config.js

@@ -4,14 +4,14 @@ module.exports = {
   plugins: [
     // Stage 1
     '@babel/plugin-proposal-export-default-from',
-    ['@babel/plugin-proposal-optional-chaining', { loose }],
+    ['@babel/plugin-transform-optional-chaining', { loose }],
-    ['@babel/plugin-proposal-nullish-coalescing-operator', { loose }],
+    ['@babel/plugin-transform-nullish-coalescing-operator', { loose }],
 
     // Stage 2
-    '@babel/plugin-proposal-export-namespace-from',
+    '@babel/plugin-transform-export-namespace-from',
 
     // Stage 3
-    ['@babel/plugin-proposal-class-properties', { loose }],
+    ['@babel/plugin-transform-class-properties', { loose }],
     '@babel/plugin-syntax-dynamic-import'
   ],
   env: {

package.json

@@ -86,17 +86,13 @@
     "typescript": "5.0.4"
   },
   "devDependencies": {
-    "@babel/core": "7.22.9",
+    "@babel/core": "7.22.11",
-    "@babel/eslint-parser": "7.22.9",
+    "@babel/eslint-parser": "7.22.11",
-    "@babel/plugin-proposal-class-properties": "7.18.6",
     "@babel/plugin-proposal-export-default-from": "7.22.5",
-    "@babel/plugin-proposal-export-namespace-from": "7.18.9",
-    "@babel/plugin-proposal-nullish-coalescing-operator": "7.18.6",
-    "@babel/plugin-proposal-optional-chaining": "7.21.0",
     "@babel/plugin-syntax-dynamic-import": "7.8.3",
-    "@babel/preset-env": "7.22.9",
+    "@babel/preset-env": "7.22.14",
     "@babel/preset-react": "7.22.5",
-    "@babel/preset-typescript": "7.22.5",
+    "@babel/preset-typescript": "7.22.11",
     "@types/lodash": "4.14.194",
     "@types/react-router-dom": "5.3.3",
     "@types/react-text-truncate": "0.14.1",
@@ -109,7 +105,7 @@
     "babel-loader": "9.1.3",
     "babel-plugin-inline-classnames": "2.0.1",
     "babel-plugin-transform-react-remove-prop-types": "0.4.24",
-    "core-js": "3.31.1",
+    "core-js": "3.32.1",
     "css-loader": "6.7.3",
     "css-modules-typescript-loader": "4.0.1",
     "eslint": "8.45.0",