boot.tests.ts

jasmine.getEnv().addReporter({
  suiteDone() {
    // Clear the styles after each test suite.
    const head: HTMLHeadElement = document.getElementsByTagName("head")[0];
    const styles: HTMLCollectionOf<HTMLStyleElement> = head.getElementsByTagName("style");
    for (let i = 0; i < styles.length; i++) {
      head.removeChild(styles[i]);
    }
  }
});