CanvasRuntime

CanvasRuntime is the only constructible public runtime class.

import { CanvasRuntime } from "@synthesisengineering/prism";

const runtime = new CanvasRuntime(canvas, { backend: "auto" });

The runtime owns the canvas association, backend selection, surface registry, paint lifecycle, invalidation, update handlers, paint handlers, coordinate helpers, and cleanup.

It does not own app state, chart data, template data, React state, game state, or example-specific transforms.

Core methods

• registerSurface(element, options)
• onPaint(handler)
• onUpdate(handler)
• paintOnce()
• start()
• stop()
• destroy()
• coordinate conversion helpers

Use the package root import. Backend classes, platform wrappers, paint-pass helpers, and runtime internals are not public API.