History is undefined server-side if compiled with generate: 'ssr'

[dschulten]

The example uses on-the-fly compilation with require( 'svelte/ssr/register' );. When the build is changed to use generate: 'ssr', the history instance in the component is undefined, although server.js creates it.

Stacktrace

TypeError: Cannot read property 'location' of undefined
    at data (D:\Dokumente\ws\microfrontends\cart\dist\ssr\bundle.js:512:23)
    at Object._399‍.r.Route._render (D:\Dokumente\ws\microfrontends\cart\dist\ssr\bundle.js:555:24)
    at Object._399‍.r.App._render (D:\Dokumente\ws\microfrontends\cart\dist\ssr\bundle.js:1058:40)
    at Object._399‍.r.App.render (D:\Dokumente\ws\microfrontends\cart\dist\ssr\bundle.js:1039:17)
    at D:\Dokumente\ws\microfrontends\cart\server.js:12:26
    at Layer.handle [as handle_request] (D:\Dokumente\ws\microfrontends\cart\node_modules\express\lib\router\layer.js:95:5)
    at next (D:\Dokumente\ws\microfrontends\cart\node_modules\express\lib\router\route.js:137:13)
    at Route.dispatch (D:\Dokumente\ws\microfrontends\cart\node_modules\express\lib\router\route.js:112:3)
    at Layer.handle [as handle_request] (D:\Dokumente\ws\microfrontends\cart\node_modules\express\lib\router\layer.js:95:5)
    at D:\Dokumente\ws\microfrontends\cart\node_modules\express\lib\router\index.js:281:22

I cannot easily switch to on-the-fly compilation because of sveltejs/svelte#967.

There is no workaround ATM.

[EmilTholin]

Hi @dschulten! Thank you for reporting this. I will look into it and see if it can be fixed on Monday.

[EmilTholin]

Sorry for the extremely slow feedback on this, but it was simply not possible to solve this in the previous version.

With 1.0.0 there is no longer a dependency on the history library, so the server code can be completely bundled at compile time. You can then pass down the url to the component and pass it to the url prop of the Router to force the application to that url.