import Node from './../type/node';
import Adapter from './../interface/adapter';
import FieldValue from './../type/field-value';
interface AdapterConfig {
    readonly filepath: string;
}
declare class FilesystemAdapter implements Adapter {
    private filepath;
    constructor(partial_config?: Partial<AdapterConfig>);
    fetchNode(node_key: string): Promise<Node | undefined>;
    storeNode(node_key: string, node: Node): Promise<Node>;
    setField(node_key: string, field_key: string, old_value: FieldValue, new_value: FieldValue): Promise<Node>;
    fetchAccountId(username: string, password: string): Promise<string | undefined>;
    storeAccountId(username: string, password: string, account_id: string): Promise<void>;
    private fetchNodeUnsafe;
    private ensureTypeDirectoryExists;
    private ensureSubdirectoryExists;
    private buildNodeFilepath;
    private ensureValuesMatch;
    private getFilepath;
}
export default FilesystemAdapter;