Runtime caches

Hello, really nice plugin!

I’m doing a server side render of blog posts and was hoping to cache the server side render as externals, but your documentation says I cannot pattern match externals. What would be the recommended solution here? I’m really trying to avoid having to list each possible blog post path as an external.

    new OfflinePlugin({
      caches: {
        main: [
          '/',
          ':rest:',
        ],
        additional: [
          '/post/*',
        ],
      },
      externals: [ '/', '/post/*' ],
      scope: '/',
      updateStrategy: 'all',
      version: 'v1',
      ServiceWorker: {
        output: 'sw.js',
      },
      AppCache: {
        directory: 'appcache/',
      },
    }),```

[NekR]

Thinking more about it, it won’t be possible to implement even runtime pattern matching for main and additional cache section since plugin simply do not know what to cache, i.e. it doesn’t what means '/post/*'. To match pattern for assets, we have to do matching agains something, e.g. agains generated assets or URLs requested from page in runtime. Given that, pattern matching at runtime could be implemented only for optional cache section since it’s to cache assets only when they were requested.

[NekR]

Here is possible API design for it: https://github.com/NekR/offline-plugin/issues/117

Can you take a look? Would you be okay with it?