TypeScript declarations broken in 9.0.4

Hello,

after recent clean install of project dependencies (after removal of package-lock) we stumbled upon a build failure:
```
node_modules/ipfs-utils/dist/src/files/glob-source.d.ts:10:14 - error TS2503: Cannot find namespace 'fs'.

10 content: fs.ReadStream | undefined;
```
After examining the contents of that file, it looks like the `fs` has no reference. It worked in 9.0.2, so I downgraded and found that there's a missing part at the top:
```
///
```
that causes the build to fail.

I'm not too sure what changed between the versions, but the downgrade definitely did the trick.