import { type ObservableProvider } from './observable-value.ts';
export declare const toError: (err: any) => any;
export declare class TimeoutError extends Error {
    constructor(timeout?: number, label?: string);
}
export interface AsyncEvents<T = any> {
    onSuccess?(result: T): void;
    onTimeout?(err: TimeoutError): void;
    onError(err: any): void;
}
export declare const observableError: (observable: ObservableProvider<AsyncEvents>, err: any) => void;
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