jest.config.ts

/*
 * For a detailed explanation regarding each configuration property and type check, visit:
 * https://jestjs.io/docs/configuration
 */

export default {
  roots: ['<rootDir>/src'],

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

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

  // Indicates which provider should be used to instrument code for coverage
  coverageProvider: 'v8',

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

  preset: '@shelf/jest-mongodb',

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