Remove polyfills only installed for IE11

client/src/utils/polyfills.js

@@ -1,14 +0,0 @@
-/**
- * Polyfills for Wagtail's admin.
- */
-
-// IE11.
-import 'core-js/shim';
-// IE11, old iOS Safari.
-import 'whatwg-fetch';
-// IE11.
-import 'element-closest';
-// IE11
-import 'formdata-polyfill';
-// IE11
-import 'url-search-params-polyfill';

client/tests/stubs.js

@@ -3,7 +3,6 @@
  * Those variables usually come from the back-end via templates.
  * See /wagtailadmin/templates/wagtailadmin/admin_base.html.
  */
-import 'element-closest';
 
 global.wagtailConfig = {
   ADMIN_API: {

client/webpack.config.js

@@ -75,14 +75,6 @@ module.exports = function exports(env, argv) {
         import: [`./client/src/entrypoints/${appName}/${moduleName}.js`],
         filename: getOutputPath(appName, 'js', moduleName) + '.js',
       };
-
-      // Add polyfills to all bundles except userbar
-      // polyfills.js imports from node_modules, which adds a dependency on vendor.js (produced by splitChunks)
-      // Because userbar is supposed to run on peoples frontends, we code it using portable JS so we don't need
-      // to pull in all the additional JS that the vendor bundle has (such as React).
-      if (moduleName !== 'userbar') {
-        entry[moduleName].import.push('./client/src/utils/polyfills.js');
-      }
     });
   }
 

package-lock.json

@@ -7,13 +7,10 @@
     "": {
       "version": "1.0.0",
       "dependencies": {
-        "core-js": "^2.5.3",
         "draft-js": "^0.10.5",
         "draftail": "^1.4.1",
         "draftjs-filters": "^2.5.0",
-        "element-closest": "^2.0.2",
         "focus-trap-react": "^8.4.2",
-        "formdata-polyfill": "^3.0.20",
         "immer": "^9.0.6",
         "js-cookie": "^2.2.1",
         "postcss-calc": "^7.0.5",
@@ -26,9 +23,7 @@
         "redux-thunk": "^2.3.0",
         "reselect": "^4.0.0",
         "telepath-unpack": "^0.0.3",
-        "url-search-params-polyfill": "^8.1.1",
-        "uuid": "^8.3.2",
-        "whatwg-fetch": "^2.0.3"
+        "uuid": "^8.3.2"
       },
       "devDependencies": {
         "@babel/core": "^7.16.7",
@@ -13387,13 +13382,6 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
-    "node_modules/core-js": {
-      "version": "2.6.12",
-      "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.12.tgz",
-      "integrity": "sha512-Kb2wC0fvsWfQrgk8HU5lW6U/Lcs8+9aaYcy4ZFc6DDlo4nZ7n70dEgE5rtR0oG6ufKDUnrwfWL1mXR5ljDatrQ==",
-      "deprecated": "core-js@<3.4 is no longer maintained and not recommended for usage due to the number of issues. Because of the V8 engine whims, feature detection in old core-js versions could cause a slowdown up to 100x even if nothing is polyfilled. Please, upgrade your dependencies to the actual version of core-js.",
-      "hasInstallScript": true
-    },
     "node_modules/core-js-compat": {
       "version": "3.20.3",
       "resolved": "https://registry.npmjs.org/core-js-compat/-/core-js-compat-3.20.3.tgz",
@@ -14665,14 +14653,6 @@
       "integrity": "sha512-FNC+P5K1n6pF+M0zIK+gFCoXcJhhzDViL3DRIGy2Fv5PohuSES1JHR7T+GlwxSxlzx4yYbsuzCZvHxcBSRCIOw==",
       "dev": true
     },
-    "node_modules/element-closest": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/element-closest/-/element-closest-2.0.2.tgz",
-      "integrity": "sha1-cqdAoQdFM4LijfnOXbtajfD5Zuw=",
-      "engines": {
-        "node": ">=4.0.0"
-      }
-    },
     "node_modules/element-resize-detector": {
       "version": "1.2.4",
       "resolved": "https://registry.npmjs.org/element-resize-detector/-/element-resize-detector-1.2.4.tgz",
@@ -16876,11 +16856,6 @@
         "node": ">=0.4.x"
       }
     },
-    "node_modules/formdata-polyfill": {
-      "version": "3.0.20",
-      "resolved": "https://registry.npmjs.org/formdata-polyfill/-/formdata-polyfill-3.0.20.tgz",
-      "integrity": "sha512-TAaxIEwTBdoH1TWndtUH1T0/GisUHwmOKcV5hjkR/iTatHBJSOHb563FP86Lra5nXo3iNdhK7HPwMl5Ihg71pg=="
-    },
     "node_modules/forwarded": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.2.0.tgz",
@@ -27922,11 +27897,6 @@
         }
       }
     },
-    "node_modules/url-search-params-polyfill": {
-      "version": "8.1.1",
-      "resolved": "https://registry.npmjs.org/url-search-params-polyfill/-/url-search-params-polyfill-8.1.1.tgz",
-      "integrity": "sha512-KmkCs6SjE6t4ihrfW9JelAPQIIIFbJweaaSLTh/4AO+c58JlDcb+GbdPt8yr5lRcFg4rPswRFRRhBGpWwh0K/Q=="
-    },
     "node_modules/url/node_modules/punycode": {
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.3.2.tgz",
@@ -39549,11 +39519,6 @@
         }
       }
     },
-    "core-js": {
-      "version": "2.6.12",
-      "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.12.tgz",
-      "integrity": "sha512-Kb2wC0fvsWfQrgk8HU5lW6U/Lcs8+9aaYcy4ZFc6DDlo4nZ7n70dEgE5rtR0oG6ufKDUnrwfWL1mXR5ljDatrQ=="
-    },
     "core-js-compat": {
       "version": "3.20.3",
       "resolved": "https://registry.npmjs.org/core-js-compat/-/core-js-compat-3.20.3.tgz",
@@ -40578,11 +40543,6 @@
       "integrity": "sha512-FNC+P5K1n6pF+M0zIK+gFCoXcJhhzDViL3DRIGy2Fv5PohuSES1JHR7T+GlwxSxlzx4yYbsuzCZvHxcBSRCIOw==",
       "dev": true
     },
-    "element-closest": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/element-closest/-/element-closest-2.0.2.tgz",
-      "integrity": "sha1-cqdAoQdFM4LijfnOXbtajfD5Zuw="
-    },
     "element-resize-detector": {
       "version": "1.2.4",
       "resolved": "https://registry.npmjs.org/element-resize-detector/-/element-resize-detector-1.2.4.tgz",
@@ -42319,11 +42279,6 @@
       "integrity": "sha1-1hcBB+nv3E7TDJ3DkBbflCtctYs=",
       "dev": true
     },
-    "formdata-polyfill": {
-      "version": "3.0.20",
-      "resolved": "https://registry.npmjs.org/formdata-polyfill/-/formdata-polyfill-3.0.20.tgz",
-      "integrity": "sha512-TAaxIEwTBdoH1TWndtUH1T0/GisUHwmOKcV5hjkR/iTatHBJSOHb563FP86Lra5nXo3iNdhK7HPwMl5Ihg71pg=="
-    },
     "forwarded": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.2.0.tgz",
@@ -50750,11 +50705,6 @@
         "schema-utils": "^3.0.0"
       }
     },
-    "url-search-params-polyfill": {
-      "version": "8.1.1",
-      "resolved": "https://registry.npmjs.org/url-search-params-polyfill/-/url-search-params-polyfill-8.1.1.tgz",
-      "integrity": "sha512-KmkCs6SjE6t4ihrfW9JelAPQIIIFbJweaaSLTh/4AO+c58JlDcb+GbdPt8yr5lRcFg4rPswRFRRhBGpWwh0K/Q=="
-    },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",

package.json

@@ -89,13 +89,10 @@
     "webpack-cli": "^4.9.1"
   },
   "dependencies": {
-    "core-js": "^2.5.3",
     "draft-js": "^0.10.5",
     "draftail": "^1.4.1",
     "draftjs-filters": "^2.5.0",
-    "element-closest": "^2.0.2",
     "focus-trap-react": "^8.4.2",
-    "formdata-polyfill": "^3.0.20",
     "immer": "^9.0.6",
     "js-cookie": "^2.2.1",
     "postcss-calc": "^7.0.5",
@@ -108,9 +105,7 @@
     "redux-thunk": "^2.3.0",
     "reselect": "^4.0.0",
     "telepath-unpack": "^0.0.3",
-    "url-search-params-polyfill": "^8.1.1",
-    "uuid": "^8.3.2",
-    "whatwg-fetch": "^2.0.3"
+    "uuid": "^8.3.2"
   },
   "scripts": {
     "start": "webpack --config ./client/webpack.config.js --mode development --progress --watch",