export declare const ONE_BILLION: number;
export declare const TEN_MILLION: number;
export declare const ONE_MILLION: number;
export declare const ONE_HUNDRED_THOUSAND: number;
export declare function normalizeNaN(maybeNaN: number, fallback?: number): number;
export declare function toUSD(cents: number): string;
export declare function centsToMicroCost(cents: string): number;
export declare function dollarsToMicroCost(dollars: string): number;
export declare function microCostToDollars(microCost: number): number;
export declare function microCostToCents(microCost: number): number;
export declare function displayTierCost(microCost: number, unit: string): string;
export declare function displayLimit(limit: number, unit: string): string;