import { DataURL, ObservableFileReader } from "../interfaces/observable-file-reader.interface";
import { DataURLImpl } from "./data-url.class";
export declare abstract class AbstractObservableFileReader<T extends Blob = Blob, R = string | ArrayBuffer | DataURL> implements ObservableFileReader<T, R> {
    readonly blob: T;
    abstract invoker(source: T): void;
    map(source: any): R;
    protected readonly _fileReader: FileReader;
    constructor(blob: T);
    private readonly _error$;
    readonly error$: import("rxjs").Observable<DOMException | null>;
    private readonly _abortEvent$;
    readonly abortEvent$: import("rxjs").Observable<ProgressEvent<FileReader>>;
    private readonly _errorEvent$;
    readonly errorEvent$: import("rxjs").Observable<ProgressEvent<FileReader>>;
    private readonly _loadEvent$;
    readonly loadEvent$: import("rxjs").Observable<ProgressEvent<FileReader>>;
    private readonly _loadEndEvent$;
    readonly loadEndEvent$: import("rxjs").Observable<ProgressEvent<FileReader>>;
    private readonly _loadStartEvent$;
    readonly loadStartEvent$: import("rxjs").Observable<ProgressEvent<FileReader>>;
    private readonly _progressEvent$;
    readonly progressEvent$: import("rxjs").Observable<ProgressEvent<FileReader>>;
    private readonly _readyState$;
    readonly readyState$: import("rxjs").Observable<0 | 1 | 2>;
    readonly isReady$: import("rxjs").Observable<boolean>;
    readonly result$: import("rxjs").Observable<R>;
    private readonly _subscriptions;
}
export declare class ObservableArrayBufferFromFileReader<T extends Blob = Blob> extends AbstractObservableFileReader<T, ArrayBuffer> {
    invoker(source: T): void;
}
export declare class ObservableTextFromFileReader<T extends Blob = Blob> extends AbstractObservableFileReader<T, string> {
    invoker(source: T): void;
}
export declare class ObservableDataURLFromFileReader<T extends Blob = Blob> extends AbstractObservableFileReader<T, DataURL> {
    invoker(source: T): void;
    map(source: any): DataURLImpl;
}