Sapper makes assumptions about where to find the 'app' folder.

[naturalethic]

For example here:

https://github.com/sveltejs/sapper/blob/master/src/middleware/index.ts#L117

Sapper is assuming the current working directory is similar to development, however in some situations the cwd may be different. For example in my deployment to google cloud functions, I have a deeper directory structure, placing my sapper app in a deep folder from the path where the function is run.

Something like a SAPPER_APP_DIR, SAPPER_BASE_DIR or something similar should be configured to allow for running the app without relying on cwd.

I experimented with using SAPPER_DEST, and assuming that app would be one level above this, however that is not the case for export and breaks that test.

[Rich-Harris]

As of 0.94 you can configure SAPPER_BASE, SAPPER_APP and SAPPER_ROUTES — hopefully that meets your needs, let me know if not

[naturalethic]

Perfect, thanks so much!