Stencil
A web component compiler for building UI components
...With intentionally small tooling, a tiny API, and zero configuration, Stencil gets out of the way and lets you focus on your work. A tiny runtime, prerendering, and the raw power of native Web Components make Stencil one of the fastest compilers around. Build cross-framework components and design systems on open web standards, and break free of Framework Churn. Stencil components are just Web Components, so they work with any major framework or no framework at all. Stencil was created to power the components for Ionic Framework, a cross-platform mobile development technology stack used by more than 5M developers worldwide.