import { Source } from 'wonka';
export declare class Resource<T, R extends T = T> {
    readonly subject: import("wonka").Subject<{
        current: R;
    } | undefined>;
    private handler;
    private value;
    private error;
    private source;
    private subscription;
    private isSuccess;
    private destroyed;
    constructor(source: Source<T>, isSuccess?: T extends R ? (value: T) => boolean : (value: T) => value is R);
    get isDestroyed(): boolean;
    read(): R;
    reload(source?: Source<T>): void;
    destroy(): void;
    private handleNext;
    private makeHandler;
}