import type { RoutePlan, RoutePosition } from './types';
export declare function isDecimalAmountString(value: unknown): value is string;
export declare function assertDecimalAmountString(value: unknown, fieldName?: string): asserts value is string;
export declare function isLowercaseAddress(value: unknown): value is string;
export declare function assertLowercaseAddress(value: unknown, fieldName?: string): asserts value is string;
export declare function isHexBytes(value: unknown): value is `0x${string}`;
export declare function assertHexBytes(value: unknown, fieldName?: string): asserts value is `0x${string}`;
export declare function findDuplicateResolvedLegKeys(resolvedLegs: readonly RoutePosition[]): string[];
export declare function assertNoDuplicateResolvedLegs(resolvedLegs: readonly RoutePosition[]): void;
export declare function assertRoutePlanLegCount(routePlan: RoutePlan, resolvedLegsOrCount: readonly RoutePosition[] | number): void;