import type { Driver } from "./types.js";
export interface CompositeDriverOptions {
    /** Optional name override. Default: "composite". */
    name?: string;
}
export declare function compositeDriver(drivers: ReadonlyArray<Driver>, options?: CompositeDriverOptions): Driver;
export interface SamplingDriverOptions {
    /** Underlying driver to invoke when sampled. */
    driver: Driver;
    /**
     * One in every `every` steps invokes the driver. `every: 1` is
     * "every step", `every: 3` is "every third step", `every: 0` disables.
     * Default: 3.
     */
    every?: number;
    /**
     * Optional fixed offset (steps before the first invocation). Default: 0,
     * meaning step 0 calls the driver.
     */
    offset?: number;
    name?: string;
}
export declare function samplingDriver(options: SamplingDriverOptions): Driver;
export interface ProbabilityDriverOptions {
    driver: Driver;
    /** Probability in [0, 1] of invoking the inner driver each step. */
    probability: number;
    name?: string;
}
export declare function probabilityDriver(options: ProbabilityDriverOptions): Driver;
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