code: function Templater(options) {
    if (options == null) {
      options = { allowEval: true };
    }
    this.options = options;
    if (options.stack && Array.isArray(options.stack)) {
      this.stack = options.stack;
    }
    else if (typeof options.stack === 'string') {
      this.stack = [ options.stack ];
    }
    else {
      this.stack = [];
    }
    this.nodes = [];
  }
docs: Construct a Templater object. Use template() in preference to this ctor.
  @deprecated Use template(node, data, options);