'use strict';

/**
 * Check if a Buffer/Uint8Array is a GZIP file
 *
 * @param {Buffer} buf
 * @api public
 */

module.exports = function (buf) {
    if (!buf || buf.length < 3) {
        return false;
    }

    return buf[0] === 31 && buf[1] === 139 && buf[2] === 8;
};