How to use the jasmine-core/lib/jasmine-core/jasmine.js.core function in jasmine-core

const failedTests: FailedTestInfo[] = [];

    // A lot of the code below is adapted from
    // node_modules/jasmine-core/lib/jasmine-core/boot.js
    // it provides a custom way to start jasmine in the RN app.

    // Helper function for adding jasmine functionlaity to global.
    // tslint:disable-next-line: no-any
    function extend(destination: any, source: any) {
      for (const property in source) {
        destination[property] = source[property];
      }
      return destination;
    }

    const jasmine = jasmineRequire.core(jasmineRequire);
    // @ts-ignore
    global.jasmine = jasmine;
    const env: jasmine.Env = jasmine.getEnv();

    const jasmineInterface = jasmineRequire.interface(jasmine, env);
    extend(global, jasmineInterface);

    //@ts-ignore
    env.configure({ random: false });

    // Custom reporter to collect the test results
    const reactReporter: jasmine.CustomReporter = {
      jasmineStarted: suiteInfo => {
        // The console.warn below seems necessary in order for the spy on
        // console.warn defined in one of the tests to run corrently.
        console.warn('starting tests');