Simplified jest config and removed unneeded packages

jest.config.js

@@ -15,37 +15,21 @@ module.exports = {
       lines: 85,
     },
   },
-  resolver: 'jest-pnp-resolver',
-  setupFiles: [
-    'react-app-polyfill/jsdom',
-    '<rootDir>/config/setupEnzyme.js',
-  ],
-  testMatch: [ '<rootDir>/test/**/*.test.{js,jsx,ts,tsx}' ],
+  setupFiles: [ '<rootDir>/config/setupEnzyme.js' ],
+  testMatch: [ '<rootDir>/test/**/*.test.{ts,tsx}' ],
   testEnvironment: 'jsdom',
   testURL: 'http://localhost',
   transform: {
-    '^.+\\.(ts|tsx|js|jsx|mjs)$': '<rootDir>/node_modules/babel-jest',
-    '^.+\\.css$': '<rootDir>/config/jest/cssTransform.js',
-    '^(?!.*\\.(ts|tsx|js|jsx|mjs|css|json)$)': '<rootDir>/config/jest/fileTransform.js',
+    '^.+\\.(ts|tsx|js)$': '<rootDir>/node_modules/babel-jest',
+    '^(?!.*\\.(ts|tsx|js|json)$)': '<rootDir>/config/jest/fileTransform.js',
   },
   transformIgnorePatterns: [
+    '<rootDir>/.stryker-tmp',
     '[/\\\\]node_modules[/\\\\].+\\.(js|jsx|ts|tsx)$',
-    '^.+\\.module\\.(css|sass|scss)$',
+    '^.+\\.module\\.scss$',
   ],
   moduleNameMapper: {
-    '^react-native$': 'react-native-web',
-    '^.+\\.module\\.(css|sass|scss)$': 'identity-obj-proxy',
+    '^.+\\.module\\.scss$': 'identity-obj-proxy',
   },
-  moduleFileExtensions: [
-    'web.js',
-    'js',
-    'web.ts',
-    'ts',
-    'web.tsx',
-    'tsx',
-    'json',
-    'web.jsx',
-    'jsx',
-    'node',
-  ],
+  moduleFileExtensions: [ 'js', 'ts', 'tsx', 'json' ],
 };