Use fast-glob

[jasonkuhrt]

On Nexus we discovered that fs-jetpack's find was very slow. When we investigated why, it turned out to be because ignores were only being executed as an in-memory filter, not actually changing how the disk was traversed (IO). This had huge consequences (toward a full 1000ms of latency on project boot).

We solved our problems by switching to fast-glob.

The key for us was https://github.com/mrmlnc/fast-glob#how-to-exclude-directory-from-reading.

Given filters are actually affecting the IO.

Maybe there are some downsides I haven't thought of but right now I'm pretty sure that it would be great for fs-jetpack to change its find engine to it.

[jasonkuhrt]

Here is the commit where we switched away from fs-jetpack find prisma-labs/graphql-framework-experiment@47b0911

[szwacz]

The use case is that you have a big directory nested somewhere inside the directory that the find was performed on, and you don't want to touch that big directory? Or is this something more nuanced?

[jasonkuhrt]

@szwacz yes I think that's it