/** Represents a mapping of string or symbol keys to any value. */
export type keyMap = Record<string | symbol, any>;
/** Defines the accepted value types for the utility functions. */
export type cnxValues = keyMap | keyMap[] | Primitive | Primitive[] | BigInt | Date | Map<any, any> | Set<any> | cnxValues[];
export type Primitive = string | number | boolean | symbol | bigint | null | undefined;
export type cnxStateValues<T = any> = (v: T) => cnxValues;
export type cnxStrings = cnxValues | TemplateStringsArray;
export type cnxSeparator = string | number | boolean | null | undefined;
/**
 * Serializes a given value into a space-separated string.
 * @param v - The value to be processed.
 * @returns A space-separated string representation of the value.
 */
declare function sv(v: cnxValues, sp?: string): string;
/**
 * Recursively serializes objects into a key-value string format.
 * @param v - The value to be processed.
 * @returns A string representation of the object.
 */
declare function rv(v: cnxValues, sp?: string): string;
/**
 * Serializes instances of Date, Map, and Set objects into a string format.
 * @param v - The value to be processed.
 * @returns A string representation of the instance.
 */
declare function iv(v: cnxValues, sp?: string): string;
/**
 * Converts input values into a space-separated string.
 * @param args - Input values.
 * @returns The formatted string.
 */
declare function cnx(...args: cnxValues[]): string;
declare namespace cnx {
    var raw: typeof cnxRaw;
    var trim: typeof cnxTrim;
    var serialize: typeof sv;
    var recursive: typeof rv;
    var instance: typeof iv;
    var separator: typeof spt;
}
/** Handle tagged template */
declare function cnxRaw(strings: cnxStrings, ...values: cnxValues[]): string;
declare function spt(i: Primitive): string;
declare function cnxTrim(input: cnxValues, separator?: cnxSeparator): string;
export { cnx, cnxTrim as trim };