Function updatePackages

build-system/common/update-packages.js:210–219

* This function updates repo root packages. * * 1. Update root-level packages if necessary. * 2. Apply various custom patches if not already applied. * 3. During CI, make sure that the root package files were correctly updated. * * During local development, work is done only during first time

()

 * returns almost instantly.
 */
function updatePackages() {
  updateDeps();
  patchWebAnimations();
  patchIntersectionObserver();
  patchResizeObserver();
  patchShadowDom();
  if (isPullRequestBuild()) {
    runNpmChecks();
  }
}

/**
 * This function updates the packages in a given task directory.