fix(UnitTests): Fixing "Cannot find module @cornerstonejs/core" error while running unit tests (#5148)

jest.config.base.js

@@ -6,10 +6,14 @@
 module.exports = {
   verbose: true,
   // roots: ['<rootDir>/src'],
-  testMatch: ['<rootDir>/src/**/*.test.js'],
+  testMatch: ['<rootDir>/src/**/*.test.js', '<rootDir>/src/**/*.test.ts'],
   testPathIgnorePatterns: ['<rootDir>/node_modules/'],
   testEnvironment: 'jsdom',
   moduleFileExtensions: ['js', 'jsx', 'ts', 'tsx'],
+  transform: {
+    '^.+\\.[jt]sx?$': 'babel-jest',
+  },
+  transformIgnorePatterns: [],
   moduleNameMapper: {
     '\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$':
       '<rootDir>/src/__mocks__/fileMock.js',