export interface RandomizationArm {
    id: string;
    weight: number;
}
export interface RandomizationRequest {
    experimentId: string;
    subjectKey: string;
    channel: string;
    arms: RandomizationArm[];
    seed?: string;
}
export interface RandomizationResult {
    experimentId: string;
    subjectKey: string;
    channel: string;
    assignmentKey: string;
    exposureKey: string;
    bucket: number;
    armId: string;
}
export declare function randomizeExperimentAssignment(request: RandomizationRequest): RandomizationResult;