export interface Ref<T> {
    current: T;
}
export interface AsyncRef<T> extends Ref<T | undefined> {
    loading: boolean;
}
export declare function createRef<T>(): Ref<T | undefined>;
export declare function createRef<T>(fn: () => Promise<T>): AsyncRef<T>;
export declare function createRef<T>(fn: () => T): Ref<T>;
export declare function createRef<T>(value: Promise<T>): AsyncRef<T>;
export declare function createRef<T>(value: T): Ref<T>;