export default class NpmGitDep {
    readonly packageName: string;
    readonly githubURL: string;
    readonly committish: string;
    readonly localSha: string;
    private constructor();
    getRemoteSha(): Promise<string | undefined>;
    static factory(packageName: string, committish?: string, packageRoot?: string): Promise<NpmGitDep>;
    static getDefaultCommittish(packageName: string, packageRoot?: string): Promise<string>;
}