import type { Session } from '../types/session.js';
import type { PersonaConfig, PersonaExperimentCohort } from './types.js';
export interface PersonaExperimentConfig {
    control: PersonaConfig;
    variant: PersonaConfig;
    allocationPct: number;
    key?: (session: Session) => string;
}
export interface PersonaExperimentResolution {
    persona: PersonaConfig;
    experiment: {
        cohort: PersonaExperimentCohort;
        allocationPct: number;
    };
}
export declare function resolvePersonaExperiment(experiment: PersonaExperimentConfig, session: Session, now?: () => Date): PersonaExperimentResolution;