kekbot.js/jest.config.js

export default {
  // 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,

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

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

  // The glob patterns Jest uses to detect test files
  testMatch: [
    '**/__tests__/**/*.test.[jt]s?(x)',
    '**/__tests__/**/*.spec.[jt]s?(x)',
    '**/?(*.)+(spec|test).[jt]s?(x)',
  ],

  // A map from regular expressions to paths to transformers
  transform: {
    '^.+\\.jsx?$': 'babel-jest',
  },

  // Ignore node_modules except for chalk (which is ESM only)
  transformIgnorePatterns: ['/node_modules/(?!(chalk)/)'],

  // An array of regexp pattern strings that are matched against all test files
  testPathIgnorePatterns: ['/node_modules/'],
};