@bimetal/toast-headless

The canonical, framework-agnostic toast controller — the BIMETAL component family's first lightweight / feedback member.

Controller-only: no store, no aggregate, no undo. The app pushes an already-decided message; the controller owns the whole presentation lifecycle so it behaves identically across React, Vue, Svelte, Angular and vanilla:

• a queue with a max cap (oldest dropped past it),
• per-toast lifetime + auto-dismiss timers (durationMs, 0 = sticky),
• manual close, pause/resume (pointer-over the stack),
• semantic variants (info | success | warning | error) and a position hint.

It has no domain dependency — in particular, no calendar and no undo/redo knowledge. Reacting to a domain event (e.g. a calendar undo) is the application's job: observe the event, decide the message, and call push(...).

import { createToastController } from '@bimetal/toast-headless';

const toasts = createToastController({ config: { position: 'bottom-end', durationMs: 4000 } });

// The app decides the message — the toast never inspects a domain.
const id = toasts.push({ message: 'Änderung rückgängig gemacht', variant: 'info' });

toasts.pause();   // pointer entered the stack
toasts.resume();  // pointer left
toasts.dismiss(id);

Bind it with the thin per-framework packages (@bimetal/toast-react-components, …) or the generic useToastController hook.