Ignore node_modules except @custom_namespace or dir

**We use in dependencies our own namespace and put there packages with flow validation. I want to put in packages files like: index.js and index.js.flow, it works fine, but I want to ignore validation all node_modules except our namespace.**

├── flow-typed
│   └── index.js
├── main.js
├── node_modules
│ ├── bar
│ │ ├── index.js
│ │ └── index.js.flow
│ ├── @custom
│ │ └── baz
│ │ ├── index.flow.js
│ │ └── index.js

I try to use OCaml regexp like: " .*/node_modules/[^@custom] /.* " but it doesn't not works.
I've tried to put my namespace in [include] but it doesn't works too.

I tried different variants but they all didn't work.

Is there any way to solve my problem ?

**flow version: Flow, a static type checker for JavaScript, version 0.61.0**