import { CausationType } from './CausationType.js';
/**
 * Represents a causation instance.
 */
export declare class Causation {
    readonly occurred: Date;
    readonly type: CausationType;
    readonly properties: Readonly<Record<string, string>>;
    /**
     * Creates an unknown causation instance.
     * @returns A new {@link Causation} with the current time, type set to {@link CausationType.unknown}, and empty properties.
     */
    static unknown(): Causation;
    /**
     * Initializes a new instance of the {@link Causation} class.
     * @param occurred - When it occurred.
     * @param type - Type of causation.
     * @param properties - Any properties associated with the causation.
     */
    constructor(occurred: Date, type: CausationType, properties: Readonly<Record<string, string>>);
}
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