/** Extract from a type T all getter-like method keys, optionally filtered by those returning type U */
export declare type Getters<T, U = any> = keyof T & {
    [P in keyof T]: T[P] extends () => U ? P : never;
}[keyof T];
/** Extract all methods from a type T */
export declare type Methods<T> = keyof T & {
    [P in keyof T]: T[P] extends (...args: any[]) => any ? P : never;
}[keyof T];
export declare type RequireAtLeastOne<T> = {
    [K in keyof T]-?: Required<Pick<T, K>> & Partial<Pick<T, Exclude<keyof T, K>>>;
}[keyof T];