iterate react-router config and print out all paths

print_react_router.js

// Say we have routes configuration like
const routes = [
  {
    "childRoutes": [
      {
        "path": "/"
      },
      {
        "path": "/anonymous-landing"
      },
      {
        "path": "/signin"
      },
      {
        "path": "/signout"
      },
      {
        "path": "/register"
      },
      {
        "path": "/forgot-password"
      },
      {
        "path": "/address-unavailable"
      },
      {
        "path": "product/:sku"
      },
      {
        "path": "products"
      },
      {
        "path": "product/:sku/similar"
      },
      {
        "path": "browse/:shelfId"
      },
      {
        "path": "/account",
        "indexRoute": {},
        "childRoutes": [
          {
            "path": "payment-methods"
          },
          {
            "path": "addresses"
          }
        ]
      },
      {
        "path": "/orders",
        "indexRoute": {},
        "childRoutes": [
          {
            "path": "/orders/:orderId"
          },
          {
            "path": "/orders/:orderId/edit/amend"
          },
          {
            "path": "/orders/:orderId/edit/items-not-available"
          },
          {
            "path": "/orders/:orderId/edit/items"
          }
        ]
      },
      {
        "path": "/favorites"
      },
      {
        "path": "/reservation"
      },
      {
        "path": "/checkout",
        "indexRoute": {},
        "childRoutes": [
          {
            "path": "review"
          },
          {
            "path": "stockup"
          },
          {
            "path": "items-not-available"
          },
          {
            "path": "payment"
          },
          {
            "path": "confirmation/:orderId"
          },
          {
            "path": "restricted-items"
          }
        ]
      },
      {
        "path": "/survey"
      },
      {
        "path": "help*"
      },
      {
        "path": "service-unavailable"
      },
      {
        "path": "upgrade"
      },
      {
        "path": "*"
      }
    ]
  }
];

const reactRouteReducer = ({paths, parentPath}, route) => {
  const currentPath = route.path ? `${parentPath}/${route.path.replace(/^\//, '')}` : parentPath;
  if (route.path) {
    paths.push(currentPath);
  }
  if (route.childRoutes) {
    route.childRoutes.reduce(reactRouteReducer, {paths, parentPath: currentPath});
  }
  return {paths, parentPath};
};

console.log(JSON.stringify(
  {paths: routes.reduce(reactRouteReducer, {
    paths: [], parentPath: ''
  }).paths}, null, 2)
);