code: function md5(src, length) {
      var crypto = require("crypto");
      var hash   = crypto.createHash("md5").update(src, "utf8").digest("hex");
      return hash.slice(0, length);
  }
docs: /** * @returns {*} * @param filepath  function fileContent (filepath) { return fs.readFileSync(require.resolve(filepath), "utf8"); } 
  @param src
  @param length