trellis/dist/undo-history/svelte/index.d.ts

Agentic State Engine — event-sourced causal graph with branching, decision traces, and realtime sync for AI-native applications

/**
 * Undo-history Svelte — `createUndoHistoryStore` store-contract bindings
 * (ADR 0034 wedge 8).
 *
 * Import from `trellis/undo-history/svelte`:
 *
 *   const undo = createUndoHistoryStore();
 *   // In markup: <button disabled={!$undo.canUndo} on:click={undo.actions.undo}>
 *   //   Undo {$undo.undoLabel}
 *   // </button>
 *
 * No dependency on the svelte package — only the store contract, so it
 * works across Svelte 4/5 (see `src/svelte/stores.ts`).
 *
 * @module trellis/undo-history/svelte
 */
import type { UndoConfig, UndoState, UseUndoReturn } from '../core/index.js';
/** Accept either a config (fresh core) or an existing core (shared mount). */
export type UndoInput = UndoConfig | UseUndoReturn;
export interface UndoHistoryStore {
    /** Full undo state (auto-subscribable). */
    state: {
        subscribe(run: (value: UndoState) => void): () => void;
    };
    /** Derived: can undo (auto-subscribable). */
    canUndo: {
        subscribe(run: (value: boolean) => void): () => void;
    };
    /** Derived: can redo (auto-subscribable). */
    canRedo: {
        subscribe(run: (value: boolean) => void): () => void;
    };
    /** Next undo label, or null (auto-subscribable). */
    undoLabel: {
        subscribe(run: (value: string | null) => void): () => void;
    };
    /** Next redo label, or null (auto-subscribable). */
    redoLabel: {
        subscribe(run: (value: string | null) => void): () => void;
    };
    actions: UseUndoReturn['actions'];
    /** Raw core (framework-free) for advanced use. */
    core: UseUndoReturn;
}
/**
 * Create a store-contract undo-history from a config or an existing core;
 * actions mutate the shared core.
 */
export declare function createUndoHistoryStore(input?: UndoInput): UndoHistoryStore;
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