How to use the @bazel/jasmine.jasmineCore function in @bazel/jasmine

const fs = require('fs');
const path = require('path');
const bazelJasmine = require('@bazel/jasmine');
const runfiles = require(process.env['BAZEL_NODE_RUNFILES_HELPER']);

const JasmineRunner = bazelJasmine.jasmine;
const JUnitXmlReporter = bazelJasmine.JUnitXmlReporter;

let jasmineCore = null
if (global.jasmine) {
  // global.jasmine has been initialized which means a bootstrap script
  // has already required `jasmine-core` and called jasmineCore.boot()
  jasmineCore = global.jasmineCore;
  if (!jasmineCore) {
    jasmineCore = bazelJasmine.jasmineCore;
  }
  // Override the jasmineCore boot function so that the jasmine
  // runner gets the already initialize jasmine and its shared environment
  jasmineCore.boot = function() {
    return global.jasmine
  };
}

const UTF8 = {
  encoding: 'utf-8'
};

// These exit codes are handled specially by Bazel:
// https://github.com/bazelbuild/bazel/blob/486206012a664ecb20bdb196a681efc9a9825049/src/main/java/com/google/devtools/build/lib/util/ExitCode.java#L44
const BAZEL_EXIT_TESTS_FAILED = 3;
const BAZEL_EXIT_NO_TESTS_FOUND = 4;