[proposal] Ability to provide a provider for the File System

Sorry for removed issue template. But looks irrelevant to question/rfc.

Problem: run fast-glob in non node env (i.e. browser/electron and etc).

Why: I contribute webpack and we have webpack bundle for run his in browser. For better zero configuration we want implement auto remove dist directory before each build (https://github.com/webpack/webpack/pull/7215). We use del package based on globby (i think del upgrade to latest globby in near future). globby use fast-glob in lastest version. But fast-glob use node fs module and it is and this makes the plugin not working in other environments.

Solutions:

• Provide option/API to replace fs on own implementation (in webpack we have outputFileSystem which implement fs interface for other env).
• Create separate bundles for each env (looks difficult and overhead).

Additional benefits:

• Allow to implement playground with fast-glob.
• Allow to implement glob as filter in browser file managers.

What do you think about this?

[alexander-akait]

@mrmlnc We want to use this package for CleanerWebpackPlugin, we have memory-fs in watch mode, so we need support to set any fs (yep we keep compatibility with original fs)

[mrmlnc]

This issue will be solved with release fast-glob@3 where we introduce the fs option. You can check release issue #181.