[Dev] Add polyfill for ES2025 iterator (#6654)

package.json

@@ -66,6 +66,7 @@
   "dependencies": {
     "@material/material-color-utilities": "^0.3.0",
     "compare-versions": "^6.1.1",
+    "core-js": "^3.46.0",
     "crypto-js": "^4.2.0",
     "i18next": "^25.5.3",
     "i18next-browser-languagedetector": "^8.2.0",

pnpm-lock.yaml

@@ -14,6 +14,9 @@ importers:
       compare-versions:
         specifier: ^6.1.1
         version: 6.1.1
+      core-js:
+        specifier: ^3.46.0
+        version: 3.46.0
       crypto-js:
         specifier: ^4.2.0
         version: 4.2.0
@@ -961,6 +964,9 @@ packages:
     resolution: {integrity: sha512-yki5XnKuf750l50uGTllt6kKILY4nQ1eNIQatoXEByZ5dWgnKqbnqmTrBE5B4N7lrMJKQ2ytWMiTO2o0v6Ew/w==}
     engines: {node: '>= 0.6'}
 
+  core-js@3.46.0:
+    resolution: {integrity: sha512-vDMm9B0xnqqZ8uSBpZ8sNtRtOdmfShrvT6h2TuQGLs0Is+cR0DYbj/KWP6ALVNbWPpqA/qPLoOuppJN07humpA==}
+
   core-util-is@1.0.3:
     resolution: {integrity: sha512-ZQBvi1DcpJ4GDqanjucZ2Hj3wEO5pZDS89BWbkcrvdxksJorwUDDZamX9ldFkp9aw2lmBDLgkObEA4DWNJ9FYQ==}
 
@@ -2800,6 +2806,8 @@ snapshots:
 
   cookie@0.7.2: {}
 
+  core-js@3.46.0: {}
+
   core-util-is@1.0.3: {}
 
   cross-fetch@4.0.0:

src/polyfills.ts

@@ -1,5 +1,5 @@
 /*
-Manual rolling of polyfills desired by the project.
+Manual rolling or other polyfills desired by the project.
 
 IMPORTANT: When adding / removing polyfills, ensure that typescript becomes
 aware of their existence, either by creating `src/typings/polyfills.d.ts`
@@ -19,3 +19,8 @@ if (typeof Promise.withResolvers === "undefined") {
     return { promise, resolve, reject };
   };
 }
+
+import "core-js/stable/set";
+import "core-js/stable/iterator";
+import "core-js/stable/map/group-by";
+import "core-js/stable/object/group-by";

tsconfig.json

@@ -16,7 +16,12 @@
       "DOM.AsyncIterable",
       "DOM.Iterable",
       "ScriptHost",
-      "WebWorker.ImportScripts"
+      "WebWorker.ImportScripts",
+      "ES2024.Object",
+      // NOTE: Be *very* mindful of these when updating typescript versions,
+      // as their definitions may change in breaking ways
+      "ESNext.Iterator",
+      "ESNext.Collection"
     ],
     "skipLibCheck": true, // Safe and almost always beneficial
     "moduleResolution": "bundler",