use jest-fixed-jsdom to fix global JS APIs

Author: haschek

eslint.config.mjs

@@ -17,11 +17,13 @@ const compat = new FlatCompat({
     allConfig: js.configs.all
 });
 
-export default [...compat.extends(
+const base = compat.extends(
     "eslint:recommended",
     "plugin:@typescript-eslint/eslint-recommended",
     "plugin:@typescript-eslint/recommended",
-), {
+);
+
+export default [...base, {
     plugins: {
         "@typescript-eslint": typescriptEslint,
         react,
@@ -31,6 +33,9 @@ export default [...compat.extends(
 
     languageOptions: {
         parser: tsParser,
+        globals: {
+            window: "readonly",
+        }
     },
 
     rules: {
@@ -54,4 +59,4 @@ export default [...compat.extends(
 
         "no-console": "error",
     },
-}];
+}];

package.json

@@ -153,6 +153,7 @@
         "identity-obj-proxy": "^3.0.0",
         "jest": "^30.2.0",
         "jest-environment-jsdom": "^30.2.0",
+        "jest-fixed-jsdom": "^0.0.11",
         "jest-pnp-resolver": "^1.2.3",
         "lint-staged": "^15.5.2",
         "node-sass-package-importer": "^5.3.3",
@@ -224,7 +225,7 @@
         "testMatch": [
             "<rootDir>/src/**/*(*.)@(spec|test).{js,jsx,ts,tsx}"
         ],
-        "testEnvironment": "jest-environment-jsdom",
+        "testEnvironment": "jest-fixed-jsdom",
         "transform": {
             "^.+\\.(js|jsx|ts|tsx)$": "babel-jest"
         },

src/test/setupTests.js

@@ -1,12 +1,6 @@
 import "regenerator-runtime/runtime";
-import { TextEncoder, TextDecoder } from "util";
 
-// Polyfill TextEncoder/TextDecoder for React 18
-global.TextEncoder = TextEncoder;
-global.TextDecoder = TextDecoder;
-
-
-if (window.document) {
+if (typeof window !== "undefined" && window.document) {
     window.document.body.createTextRange = function () {
         return {
             setEnd: function () {},

yarn.lock

@@ -8195,6 +8195,11 @@ jest-environment-node@30.2.0:
     jest-util "30.2.0"
     jest-validate "30.2.0"
 
+jest-fixed-jsdom@^0.0.11:
+  version "0.0.11"
+  resolved "https://registry.yarnpkg.com/jest-fixed-jsdom/-/jest-fixed-jsdom-0.0.11.tgz#67b5d5c4e9821bfb1e09a43139bfb0b9f4ec4f18"
+  integrity sha512-3UkjgM79APnmLVDnelrxdwz4oybD5qw6NLyayl7iCX8C8tJHeqjL9fmNrRlIrNiVJSXkF5t9ZPJ+xlM0kSwwYg==
+
 jest-haste-map@30.2.0:
   version "30.2.0"
   resolved "https://registry.yarnpkg.com/jest-haste-map/-/jest-haste-map-30.2.0.tgz#808e3889f288603ac70ff0ac047598345a66022e"