export declare const allRatePolicyNames: readonly ["FIXED", "STEP", "EXP", "INV"];
export type RatePolicyName = typeof allRatePolicyNames[number];
export type RateFn = (baseRate: number, iteration: number) => number;
export type RatePolicy = (gamma: number, power: number) => RateFn;
export declare const FIXED: RatePolicy;
export declare const STEP: RatePolicy;
export declare const EXP: RatePolicy;
export declare const INV: RatePolicy;
export declare function getRatePolicy(name: RatePolicyName): RatePolicy;