checkEnvironment2.ts

  /** Returns `true` if running in a CI environment, e.g. during an automated build */
  static get isCI(): boolean {
    if (!Logger.isNode) {
      return false;
    }
    const { CI, CONTINUOUS_INTEGRATION, BUILD_NUMBER, RUN_ID } = process.env;
    // Shamelessly stolen from https://github.com/watson/ci-info
    return !!(
      CI || // Travis CI, CircleCI, Cirrus CI, Gitlab CI, Appveyor, CodeShip, dsari
      CONTINUOUS_INTEGRATION || // Travis CI, Cirrus CI
      BUILD_NUMBER || // Jenkins, TeamCity
      RUN_ID || // TaskCluster, dsari
      false
    );
  }

  /** Retruns `true` if running as part of a unit test */
  static get isUnitTest(): boolean {
    if (!Logger.isNode) {
      return false;
    }
    const { JEST_WORKER_ID } = process.env;
    return !!(JEST_WORKER_ID || typeof global?.it === "function");
  }