/**
 * DialogueRunner.ts
 *
 * Dialogue execution: node traversal, variable substitution,
 * conditional branching, and event hooks.
 *
 * @module dialogue
 */
export type DialogueNodeType = 'text' | 'choice' | 'branch' | 'event';
export interface DialogueNode {
    id: string;
    type: DialogueNodeType;
    speaker?: string;
    text?: string;
    choices?: Array<{
        label: string;
        nextId: string;
        condition?: string;
    }>;
    condition?: string;
    trueNextId?: string;
    falseNextId?: string;
    nextId?: string;
    event?: string;
}
export type EventCallback = (event: string, nodeId: string) => void;
export declare class DialogueRunner {
    private nodes;
    private variables;
    private currentNodeId;
    private history;
    private eventCallback;
    private finished;
    loadNodes(nodes: DialogueNode[]): void;
    setVariable(key: string, value: unknown): void;
    getVariable(key: string): unknown;
    onEvent(cb: EventCallback): void;
    start(nodeId: string): DialogueNode | null;
    advance(choiceIndex?: number): DialogueNode | null;
    private processNode;
    resolveText(text: string): string;
    getAvailableChoices(node: DialogueNode): Array<{
        label: string;
        nextId: string;
    }>;
    getCurrentNode(): DialogueNode | null;
    isFinished(): boolean;
    getHistory(): string[];
}
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