type Param<T> = string | string[] | Record<string, boolean> | [string, {
    [key in keyof T]?: T[key];
}] | {
    [key in keyof T]?: T[key] extends string | undefined ? Record<string, string> : T[key] extends boolean | undefined ? string : (Record<string, string> | string);
} | ((valueByProp: T) => any);
type ReturnType<T> = {
    default?: Partial<T>;
} & ((valueByProp?: T) => string);
/**
 * 1. 'inline-flex rounded'
 * 2. ['inline-flex', 'rounded']
 * 3. { 'bg:red': true, 'fg:30': false }
 * 4. ['uppercase', { intent: 'primary', size: 'md' }]
 * 5. { intent: { primary: 'bg:blue-50 fg:white', secondary: 'bg:white fg:gray-80' }, size: { sm: 'font:20 py:1 px:2', md: 'font:16 py:2 px:4' }, disabled: 'opacity:.5' }
 * 6. ({ $intent, $size }) => $intent && $size && 'font:italic'
 */
declare function cv<T extends Record<string, string | number | boolean>>(...params: Param<T>[]): ReturnType<T>;
declare function cv<T extends Record<string, string | number | boolean>>(firstParam: TemplateStringsArray, ...params: Param<T>[]): ReturnType<T>;
export default cv;