import type { ClassicState } from './classic-state.js';
import type { ClassicTransitionEffect, ClassicTransitionEvent } from './classic-transitions.js';
export type ClassicStateEventSource = 'comet-state' | 'comet-guard' | 'comet-archive';
export interface ClassicStateEventInput {
    change: string;
    event: ClassicTransitionEvent | 'rebind';
    source: ClassicStateEventSource;
    from: ClassicState;
    to: ClassicState;
    effects: ClassicTransitionEffect[];
}
export interface ClassicStateEventRecord extends ClassicStateEventInput {
    schemaVersion: 1;
    timestamp: string;
}
export declare const CLASSIC_STATE_EVENT_LOG: string;
export declare function appendClassicStateEvent(changeDir: string, input: ClassicStateEventInput): Promise<ClassicStateEventRecord>;
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