/**
 * Resolves a CSS custom property token to its computed value on the document body.
 *
 * @param token CSS custom property name, e.g. --syn-color-primary.
 * @returns Trimmed computed value or an empty string when the token is not defined.
 */
export declare const getRealStyleValue: (token: string) => string;
/**
 * Resolves a CSS custom property token and parses the numeric part from the value.
 *
 * @param token CSS custom property name.
 * @returns Parsed floating-point number from the computed style value.
 */
export declare const getRealValueWithoutUnit: (token: string) => number;
/**
 * Normalizes either a single value or an array into an array shape.
 *
 * @param value A single item or an array of items.
 * @returns The input as an array.
 */
export declare const normalizeArray: <T>(value: T | T[]) => T[];
/**
 * Ensures that a nested property path exists and applies a default value when the final key is missing.
 * Existing values are preserved.
 *
 * @param target Object that is read and potentially mutated.
 * @param keyPath Dot-separated key path, e.g. a.b.c.
 * @param value Default value to assign when the final key does not exist.
 */
export declare const setDefaultValueIfNotAvailable: (target: Record<string, unknown>, keyPath: string, value: unknown) => void;