Update to Babel 7 (#6471)

Co-authored-by: Thibaud Colas <thibaudcolas@gmail.com>

babel.config.js

@@ -0,0 +1,3 @@
+module.exports = {
+    presets: ['@babel/preset-env', '@babel/preset-react'],
+};

client/src/components/Draftail/EditorFallback/EditorFallback.test.js

@@ -68,7 +68,8 @@ describe('EditorFallback', () => {
     });
 
     it('reload page', () => {
-      window.location.reload = jest.fn();
+      delete window.location;
+      window.location = { reload: jest.fn() };
 
       const wrapper = shallow(
         <EditorFallback field={document.createElement('input')}>
@@ -85,7 +86,7 @@ describe('EditorFallback', () => {
         .last()
         .simulate('click');
 
-      expect(window.location.reload).toHaveBeenCalled();
+      expect(global.location.reload).toHaveBeenCalled();
     });
 
     it('#showError', () => {

package.json

@@ -16,39 +16,6 @@
     "last 2 iOS versions",
     "last 2 Safari versions"
   ],
-  "babel": {
-    "presets": [
-      [
-        "es2015",
-        {
-          "modules": false
-        }
-      ],
-      "react"
-    ],
-    "env": {
-      "test": {
-        "presets": [
-          "es2015",
-          "react"
-        ]
-      },
-      "production": {
-        "plugins": [
-          [
-            "transform-react-remove-prop-types",
-            {
-              "mode": "remove",
-              "removeImport": true,
-              "ignoreFilenames": [
-                "node_modules"
-              ]
-            }
-          ]
-        ]
-      }
-    }
-  },
   "jest": {
     "testPathIgnorePatterns": [
       "/node_modules/",
@@ -68,13 +35,12 @@
     ]
   },
   "devDependencies": {
+    "@babel/core": "^7.12.3",
+    "@babel/preset-env": "^7.12.1",
+    "@babel/preset-react": "^7.12.1",
     "@wagtail/stylelint-config-wagtail": "^0.1.0",
-    "babel-core": "^6.26.3",
-    "babel-jest": "^23.6.0",
-    "babel-loader": "^7.1.2",
-    "babel-plugin-transform-react-remove-prop-types": "^0.4.12",
-    "babel-preset-es2015": "^6.24.1",
-    "babel-preset-react": "^6.24.1",
+    "babel-jest": "^26.6.0",
+    "babel-loader": "^8.1.0",
     "enzyme": "^3.9.0",
     "enzyme-adapter-react-16": "^1.9.1",
     "enzyme-to-json": "^3.3.0",
@@ -93,7 +59,7 @@
     "gulp-size": "^3.0.0",
     "gulp-sourcemaps": "~2.6.1",
     "gulp-util": "~3.0.8",
-    "jest": "^23.6.0",
+    "jest": "^26.6.0",
     "npm-run-all": "^4.1.5",
     "react-axe": "^3.1.0",
     "react-test-renderer": "^16.2.0",

wagtail/admin/static_src/wagtailadmin/app/wagtailadmin.entry.test.js

@@ -1,4 +1,5 @@
 const wagtail = require('wagtail-client');
+jest.mock('wagtail-client');
 wagtail.initExplorer = jest.fn();
 
 document.addEventListener = jest.fn();