NewPower Pages
Power Pages: Create Power Pages SPA site from the Power Pages studio
Power Pages Studio will enable direct creation of single-page application (SPA) sites, allowing developers to quickly bootstrap modern SPA projects and continue customization in their preferred development tools and frameworks.
Microsoft's description
Quickly get started with modern single-page application (SPA) development by creating a site directly from Power Pages Studio. Continue building and customizing your experience using your preferred development tools and frameworks.