Added missing configs to fixt tests with Jest 28

config/jest/cssTransform.js

@@ -0,0 +1,12 @@
+// This is a custom Jest transformer turning style imports into empty objects.
+// http://facebook.github.io/jest/docs/en/webpack.html
+
+module.exports = {
+  process() {
+    return { code: 'module.exports = {};' };
+  },
+  getCacheKey() {
+    // The output is always the same.
+    return 'cssTransform';
+  },
+};

config/jest/fileTransform.js

@@ -24,6 +24,8 @@ module.exports = {
       };`;
     }
 
-    return `module.exports = ${assetFilename};`;
+    return {
+      code: `module.exports = ${assetFilename};`
+    };
   },
 };

config/jest/setupBeforeEnzyme.js

@@ -0,0 +1,4 @@
+import * as util from 'util';
+
+global.TextEncoder = util.TextEncoder;
+global.TextDecoder = util.TextDecoder;