The "path" argument must be of type string. Received undefined

[SDAdham]

I am trying your implementation but I am getting The "path" argument must be of type string. Received undefined when I refresh localhost, not sure why. I'm still investigating...

One change on my end, I cannot use import { ɵCommonEngine as CommonEngine } from '@nguniversal/common/​engine'; because it causes Cannot find module '@nguniversal/common/​engine' or its corresponding type declarations.
This import { CommonEngine } from '@nguniversal/common/engine'; works, but not sure if that's good to go.

[sbarbat]

Hey @SDAdham, thats probably happening because you haven't defined the path of the routes you want to cache, you need to do it like this:

const routeCaches = [
    {path: '/', ttl: 86400},
    {path: '/explore-recipes', ttl: 86400, useQueryParams: true}
];

[SDAdham]

hi @sbarbat ,

I did the route cache as this:

const routeCaches = [
    { path: '*', ttl: 86400, useQueryParams: true },
    // { path: '/explore-recipes', ttl: 86400, useQueryParams: true },
  ];

and then:

let routeCache: RouteCache;
      try {
        routeCache = setupOptions.routeCaches?.filter(
          route =>
            route.path === req.path || new RegExp('^' + route.path.replace(/\*/g, '.*') + '$').test(req.path || ''),
        )[0];
      } catch (e) {}

It's defined on my end unless I'm missing something?

[SDAdham]

@sbarbat I think the error happens here:

engine
                .render(renderOptions)
                .then(html => {
                  console.log('render result', html);
                  if (!routeCache.isCacheableValue || routeCache.isCacheableValue(req.originalUrl, req)) {
                    memoryCache
                      .set(cacheKey, html, routeCache.ttl ?? 60)
                      .catch((err: Error) => console.log('Could not cache the request', err));
                  }

                  callback(null, html);
                })
                .catch(callback); // the error happens from this callback

I'm not sure if this is related to the import:

import { CommonEngine } from '@nguniversal/common/engine';
// import { ɵCommonEngine as CommonEngine } from '@nguniversal/common/​engine';

[shyamal890]

@sbarbat I am also facing this issue.