import { SpacingTokenType } from '../types/design-token.type';
/**
 * The function parses a string representing a pixel value to a number, or returns the input if it is already a number.
 *
 * @param {number | string} input - The input parameter can be either a number or a string. If it is a
 * string, it should be in the format of a CSS pixel value (e.g. "10px").
 * @returns {number} returns a number. If the input is already a number, it returns the input as is. If the input is a string, it attempts to extract a number from the
 * string by removing the 'px' suffix and converting the remaining string to a number. If the string
 * cannot be converted to a number, it returns 0.
 */
export declare function parsePixelStringToNumber(input: number | string): number;
/**
 * The function takes a number or string input and returns a string with 'px' appended if the input is a number.
 *
 * @param {number | string} input - The input parameter can be either a number or a string. If it is a
 * number, the function will convert it to a string and append the 'px' unit to it. If it is already a string, the function will simply return it as is.
 * @returns {string} returns a string that represents a CSS pixel value. If the input is a number, it concatenates the number with the string 'px'. If the input is already a
 * string, it returns the input string as is.
 */
export declare function parseNumberToPixelString(input: number | string): string;
/**
 * This function takes an input parameter and returns a string.
 * - If the input is a number, it returns a string with 'px'.
 * - If the input is a string, it returns the input string as is.
 * - If the input is a {@link SpacingTokenType}, it returns a parsed value string with 'px'.
 *
 * @param {number | string | SpacingTokenType} input - The input parameter can be either a number or a string. If it is a
 * @returns {string} returns a string that represents a CSS pixel value
 */
export declare function parseToPixelString(input: number | string | SpacingTokenType): string;