monorepo support

[Janpot]

I'd like to reopen #746
We're more than a year and a half later and monorepo structure becomes more and more prevalent. The issue can be easily worked around by ignoring **/node_modules/**. But I think it should be the standard behavior.

[LinusU]

Ignoring **/node_modules/ out of the box seems fine by me 👍

[rstacruz]

I second this, seems like a reasonable thing to do.

For background: the problem stems from a repo structure like so:

/
  packages/
    a/
      node_modules/
    b/
      node_modules/
    c/
      node_modules/

Running standard in the top-level can cause unnecessary traversions down into node_modules/. There's a workaround ☝️, but I agree it makes sense to be default behavior.

[LinusU]

Pull request very welcome 🙌

[Janpot]

Is this default provided by eslint? Maybe it should be a default in eslint?

[brodybits]

I would personally favor consistency with eslint, assuming there is no good reason otherwise.

[Janpot]

Yes, that makes sense. I've been digging through their tickets and found this PR eslint/eslint#10092
Not sure whether they're not open to expand the default, or whether it was just easier to document than fix