import { Reader } from '@subql/types-core';
import type { IPackageJson } from 'package-json-type';
export declare class GithubReader implements Reader {
    private readonly key;
    private readonly api;
    private defaultBranch?;
    constructor(key: string);
    get root(): undefined;
    getPkg(): Promise<IPackageJson>;
    getProjectSchema(): Promise<unknown>;
    getFile(fileName: string): Promise<string>;
    private getDefaultBranch;
}