Afero Filesystem

[aljo242]

Summary

The Afero package would be a great replacement for the existing util/file_util package with better design and expanded functionality such as Mock Filesystems for testing.

Problem Definition

Koch is a minimal web server sdk - not a file utility module. We currently maintain two utility modules in the util folder: file_util and http_util. It makes the most sense to remove these from the project and replace them with better tested, community-used packages. In this case, we propose to replace file_util with Afero.

Proposal

The functions exposed by Afero already very nicely mirror those exposed by our util/file_util package, so this will mainly be a swap job. FS setup (create a global or scoped appFS object) will also need to be added to the app during initialization.

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