Memory-related regression introduced in gatsby@1.7.0

[bvaughn]

This issue is a follow-up for the noisier issue #1754.

After recently trying to upgrade gatsby, I am no longer able to run gatsby develop. After ~2 minutes of running, the message "bootstrap finished" is logged and then the process hangs and eventually runs out of memory.

I've narrowed the cause of this down to gatsby version 1.7.0. (The previous version 1.6.6 works fine.) So the problem is likely somewhere in here).

I have not yet had time to dig through the changes to packages/gatsby to determine the likely cause of this. However you can reproduce this problem (if you're interested) by checkout out the gatsby branch of bvaughn/react and running:

cd path-to-your-checkout/www
yarn install
yarn dev

[jquense]

my hunch would be it's somewhere in the createLayouts PR, given it was fairly large and did a lot of stuff.

[KyleAMathews]

Seems like this is fixed now by #1879!