yarn fails installing in current directory because of incomplete files in parent directory

[SampsonCrowley]

Do you want to request a feature or report a bug?

BUG

What is the current behavior?

yarn is traversing and parsing parent directories even when current directory has a package.json

If the current behavior is a bug, please provide the steps to reproduce.

create an invalid package.json -- (in my case there are nested apps, and i created the child before the parent, in the process of changing from a static CRA to Express server)
create a subdirectory and cd into it
create a valid package.json and run yarn

What is the expected behavior?

it should keep to the subdirectory because it has a valid package.json with dependencies

Please mention your node.js, yarn and operating system version.

node v11.12.0

yarn v1.15.2

Linux archlinux 5.0.4-arch1-1-ARCH #1 SMP PREEMPT Sat Mar 23 21:00:33 UTC 2019 x86_64 GNU/Linux