jest.config.js

// For a detailed explanation regarding each configuration property, visit:
// https://jestjs.io/docs/en/configuration.html

module.exports = {
  // Stop running tests after `n` failures
  bail: 1,

  // Automatically clear mock calls and instances between every test
  clearMocks: true,

  // An array of glob patterns indicating a set of files for which coverage information should be collected
  collectCoverageFrom: ['src/app/**/*.js'],

  // A list of reporter names that Jest uses when writing coverage reports
  coverageReporters: ['text', 'lcov'],

  // The test environment that will be used for testing
  testEnvironment: 'node',

  // The glob patterns Jest uses to detect test files
  testMatch: ['**/__tests__/**/*.test.js'],

  // A map from regular expressions to paths to transformers
  transform: {
    '.(js|jsx|ts|tsx)': '@sucrase/jest-plugin',
  },
};