Function getChildRouteGuards

packages/router/src/utils/preactivation.ts:84–108

(
  futureNode: TreeNode<ActivatedRouteSnapshot>,
  currNode: TreeNode<ActivatedRouteSnapshot> | null,
  contexts: ChildrenOutletContexts | null,
  futurePath: ActivatedRouteSnapshot[],
  checks: Checks = {
    canDeactivateChecks: [],
    canActivateChecks: [],
  },
)

}

function getChildRouteGuards(
  futureNode: TreeNode<ActivatedRouteSnapshot>,
  currNode: TreeNode<ActivatedRouteSnapshot> | null,
  contexts: ChildrenOutletContexts | null,
  futurePath: ActivatedRouteSnapshot[],
  checks: Checks = {
    canDeactivateChecks: [],
    canActivateChecks: [],
  },
): Checks {
  const prevChildren = nodeChildrenAsMap(currNode);

  // Process the children of the future route
  futureNode.children.forEach((c) => {
    getRouteGuards(c, prevChildren[c.value.outlet], contexts, futurePath.concat([c.value]), checks);
    delete prevChildren[c.value.outlet];
  });

  // Process any children left from the current route (not active for the future route)
  Object.entries(prevChildren).forEach(([k, v]: [string, TreeNode<ActivatedRouteSnapshot>]) =>
    deactivateRouteAndItsChildren(v, contexts!.getContext(k), checks),
  );

  return checks;
}

function getRouteGuards(
  futureNode: TreeNode<ActivatedRouteSnapshot>,