export declare const THUNK_SYMBOL: unique symbol;
export interface Thunk<T> extends Function {
    __THUNK__: typeof THUNK_SYMBOL;
    (): T;
}
export declare type ThunkOrValue<T> = T | Thunk<T>;
export declare type UnwrapThunkDeep<T> = {
    0: T extends Thunk<infer U> ? UnwrapThunkDeep<U> : T;
}[T extends ThunkOrValue<T> ? 0 : never];
export declare const isThunk: <T>(value: any) => value is Thunk<T>;
export declare const toThunk: <R>(fn: () => R) => Thunk<R>;