export interface NumberI18N {
    parse: (value: string) => number | undefined;
    format: (number?: string | number | null, decimalPlaces?: number, exact?: boolean) => string;
    unformat: (value: string) => string | undefined;
    thousandSeparator: string;
    decimalSeparator: string;
    thousandRE: RegExp;
    decimalRE: RegExp;
}
/**
 * Get the number internationalization object for a given language.
 *
 * @param language - The language to get the number internationalization object for (default: navigator.language).
 * @returns - The number internationalization object.
 */
export declare function getNumberI18N(language?: string): NumberI18N;
/**
 * Round a number to a specified number of decimal places.
 *
 * @param num - The number to round.
 * @param digits - The number of decimal places to round to.
 * @returns - The rounded number.
 */
export declare function roundTo(num: number, digits: number): number;
/**
 * Convert a string or number to a number, or return undefined if it is not a valid number.
 *
 * @param value - The string or number to convert.
 * @returns - The number, or undefined if it is not a valid number.
 */
export declare function asNumber(value: string | number | undefined | null): number | undefined;
/**
 * Convert a string or number to a number, or return a default value if it is not a valid number.
 *
 * @param value - The string or number to convert.
 * @param alt - The default value to return if the conversion fails (default: 0).
 * @returns - The number, or the default value if it is not a valid number.
 */
export declare function toNumber(value: string | number | null | undefined, alt?: number): number;
/**
 * Convert a string or number to a positive number, or return a default value if it is not a valid number.
 *
 * @param value - The string or number to convert.
 * @param alt - The default value to return if the conversion fails (default: 0).
 * @returns - The positive number, or the default value if it is not a valid number.
 */
export declare function toPositiveNumber(value: string | number | null | undefined, alt?: number): number;
/**
 * Convert a numerator and denominator to a percentage.
 *
 * @param numerator - The numerator of the fraction.
 * @param denominator - The denominator of the fraction.
 * @returns - The percentage as a number.
 */
export declare function toPercentage(numerator: string | number | null | undefined, denominator: string | number): number;
/**
 * Convert a percentage and total to a number.
 *
 * @param percent - The percentage to convert.
 * @param of - The total to calculate the percentage of.
 * @returns - The number equivalent of the percentage.
 */
export declare function fromPercentage(percent: string | number, of: string | number): number;
/**
 * Convert a number to a string with a fixed number of decimal places.
 *
 * @param value - The number to convert.
 * @param places - The number of decimal places to include.
 * @param alt - The value to return if the conversion fails or value is null/undefined (default: 0).
 * @returns - The number as a string with the specified number of decimal places.
 */
export declare function toFixedNumber(value: string | number | null | undefined, places: number, alt?: number): string | undefined;
/**
 * Remove trailing zeros from a number.
 *
 * @param value - The number to remove trailing zeros from.
 * @returns - The number as a string without trailing zeros.
 */
export declare function removeZeroDecimals(value: string): string;
/**
 * Count the number of decimal places in a number.
 *
 * @param value - The number to count the decimal places of.
 * @returns - The number of decimal places.
 */
export declare function countDecimals(value: number): number;