import { type PRNG } from "./random";
export type ProbabilityEvent<T> = {
    value: T;
    p?: number;
};
export declare class Probability<T> {
    #private;
    constructor(events?: ProbabilityEvent<T>[], rng?: PRNG | null);
    event(event: ProbabilityEvent<T>): this;
    sample(): ProbabilityEvent<T>;
    take(): ProbabilityEvent<T>;
}