jest.config.js

/*
 * For a detailed explanation regarding each configuration property, visit:
 * https://jestjs.io/docs/configuration
 */
module.exports = {
  clearMocks: false,
  collectCoverage: false,
  coverageDirectory: "coverage",

  coveragePathIgnorePatterns: [
    "/node_modules/"
  ],

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

  coverageReporters: [
    "json",
    "text",
    "lcov",
    "clover"
  ],

  // An array of file extensions your modules use
  moduleFileExtensions: [
    "js",
    "json",
  ],

  // A list of paths to directories that Jest should use to search for files in
  roots: [
    "./tests"
  ],

  // Allows you to use a custom runner instead of Jest's default test runner
  runner: "jest-runner",

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

  // This option allows use of a custom test runner
  testRunner: "jest-circus/runner",
};