jest.config.js

module.exports = {
  roots: ['<rootDir>/tests'],
  preset: "ts-jest",
  transform: {
    "^.+\\.(ts|tsx)$": "ts-jest",
    "^.+\\.(js)$": "babel-jest",
  },
  transformIgnorePatterns: [],
  testRegex: '(/__tests__/.*|(\\.|/)(test|spec))\\.(ts|tsx)?$',
  moduleFileExtensions: ["ts", "tsx", "js", "json"],
  testEnvironment: "jest-environment-jsdom",
  moduleNameMapper: {
    ".+\\.(css|styl|less|sass|scss|png|jpg|ttf|woff|woff2|svg)$": "identity-obj-proxy",
  },
  setupFiles: [
    "jsdom-worker"
  ]
};