import { inspect, type InspectOptions } from "node:util";
import type E621 from "../index.js";
/** @category Models */
export default abstract class Base<D = unknown> {
    protected data: D;
    protected e621: E621;
    protected includeInInspect: Array<string>;
    constructor(e621: E621, data: D);
    [inspect.custom](_depth: never, opts: InspectOptions): string;
    toJSON(): D;
}