fs.walk followSymlinks unimplemented

[andykais]

adding the flag followSymlinks: true to fs.walk results in the error:

error: Uncaught Error: unimplemented
                    throw new Error("unimplemented");
                          ^
    at Object.walk (file:///home/andrew/.deno/bin/wallpal.js:2600:27)

fs.walk appears to be the only std module that has tjrows an unimplemented error. That makes me believe perhaps this was not intentional? https://github.com/denoland/deno/blob/master/std/fs/walk.ts#L110. Either way, it would be awesome to re-enable this flag, there are file systems including symlinks I would like to walk over. Is there a workaround that exists in deno currently?

[Liamolucko]

I can try and fix this.