About
罫線 — keisenけいせん
Keisen takes its name from the Japanese 罫線 — once the word for candlestick charts in financial practice. It brings that craft to the modern web: declare charts the way you write components, and let the library stay out of the way.
Features
Built to feel light
Easy hands
If you know React or Vue, you already know Keisen. Children are layers; JSX and templates draw what you write. Chart literacy is optional — component literacy is enough.
Ready out of the box
Pass candlestick data and you have a chart. Themes, resolutions, indicators, and drawing tools compose when you need them — not before.
Cross-runtime
Heavy lifting lives in @keisen-charts/core. Framework bindings stay thin. React and Vue ship today; more adapters can follow without rewriting the engine.