Re:Turbolinks: SPA-like Experience without the SPA-framework...
by Rafert on Tuesday December 12, 2017 @12:59PM
(#15907802)
They forked: https://github.com/Shopify/turbograft to add partial page replacements. It was slated to be merged in TurboLinks 3 but that canned in favour of version 5.
Their new Polaris components are using React though: https://github.com/shopify/polaris
https://github.com/shopify-graveyard/turbolinks/