import { SyntaxErrorDetails } from '../loaders';
import { Importer } from './Importer';
import { ImporterErrorProvider } from './ImporterErrorProvider';
import { DocFormat, Spec, Doc, DocType } from './Spec';
export declare abstract class BaseImporter<TDocType extends DocType, TDoc = Doc<TDocType>> implements Importer<TDocType, TDoc>, ImporterErrorProvider {
    private readonly docFormats;
    private readonly loaderFactory;
    private readonly loaders;
    protected constructor();
    abstract get type(): TDocType;
    abstract isSupported(spec: unknown): spec is TDoc;
    import(content: string, expectedFormat?: DocFormat): Promise<Spec<TDocType, TDoc> | undefined>;
    getErrorDetails(format: DocFormat): SyntaxErrorDetails | undefined;
    protected fileName(_: {
        doc: TDoc;
        format: DocFormat;
    }): string | undefined;
    private load;
    private initLoaders;
    private getLoader;
}