change-string-case/node_modules/@octokit/auth-token/dist-src/auth.js

export async function auth(token) {
    const tokenType = token.split(/\./).length === 3
        ? "app"
        : /^v\d+\./.test(token)
            ? "installation"
            : "oauth";
    return {
        type: "token",
        token: token,
        tokenType
    };
}