import { ConverterConfig } from '../types/converterTypes';
/**
 * Checks if a value is a valid non-negative number, string, or bigint.
 * Handles decimals, special cases, and size validation.
 */
export declare function isValidNumber(num: number | string | bigint): boolean;
/**
 * Splits a number into integer and decimal parts with proper rounding.
 * Handles decimals by rounding to 2 places and managing overflow.
 */
export declare function splitNumber(num: number | string | bigint): {
    integer: bigint;
    decimal?: string;
};
/**
 * Rounds a decimal string to 2 places.
 */
export declare function roundDecimal(decimal: string): string;
/**
 * Validates that a decimal string is within expected range.
 */
export declare function validateDecimal(decimal: string | undefined): boolean;
/**
 * Normalizes decimal by removing zero decimals and padding.
 */
export declare function normalizeDecimal(decimal: string | undefined): string | undefined;
/**
 * Validates the entire custom mappings configuration.
 */
export declare function validateCustomMappings(config: Required<ConverterConfig>): boolean;
/**
 * Converts a scale to its BigInt value.
 */
export declare function getScaleValue(scale: number | string): bigint;