code: function(prefix) {
      jst.global          = true;
      jst.globalTagPrefix = prefix || jst.tagPrefix;
      for (let tag of jst.tags) {
        let name = jst.globalTagPrefix + tag;
        let g = typeof global !== 'undefined' ? global : window;
        g[name] = function() {
          return jst[name].apply(this, arguments);
        };
      }
    }
docs: Put all the element functions (e.g. $div(), $span()) in the global (window) namespace