jest.config.js

/*
 * For a detailed explanation regarding each configuration property, visit:
 * https://jestjs.io/docs/configuration
 */
module.exports = {
  // Automatically clear mock calls and instances between every test
  clearMocks: true,

  // Indicates whether the coverage information should be collected while executing the test
  collectCoverage: true,

  coverageThreshold: {
    global: {
      branches: 80,
      functions: 80,
      lines: 80,
      statements: 80,
    },
  },

  testMatch: ['<rootDir>/src/**/?(*.)+(spec|test).[jt]s?(x)'],

  // The directory where Jest should output its coverage files
  coverageDirectory: 'coverage',

  // A map from regular expressions to module names or to arrays of module names that allow to stub out resources with a single module
  moduleNameMapper: {
    '^@/(.*)$': '<rootDir>/src/$1',
  },

  modulePathIgnorePatterns: ['<rootDir>/.stryker-tmp'],

  // A list of paths to modules that run some code to configure or set up the testing framework before each test
  setupFilesAfterEnv: ['<rootDir>/settings/JestSetup.js'],

  // The test environment that will be used for testing
  testEnvironment: 'jsdom',
  snapshotSerializers: ['@emotion/jest/serializer'],
};