How to use the html-parse-stringify.parse function in html-parse-stringify

function renderToIDom(html) {
	var ast = parse(html);
	
	if (Array.isArray(ast)) {
		ast.forEach(renderAstNode);
	} else {
		renderAstNode(ast);
	}
};

renderWithTemplate: function (data) {
        var newTree = this.renderTemplateToVdom(data);
        var isBackbone = typeof this.setElement === 'function';
        var isFirstRender;

        //view was initialized with an el, not yet rendered
        if (!this.tree && this.el) {
            this.tree = this.astToVdom(parse(this.el.outerHTML));
            isFirstRender = true;
        }

        //first render
        if (!this.el) {
            isFirstRender = true;
            var el = createElement(newTree);
            this.tree = newTree;
            if (isBackbone) {
                this.el.appendChild(el);
                this._backboneEl = el;
            } else {
                this.el = el;
            }
        //subsequent renders
        } else {

renderTemplateToVdom: function (data) {
        var renderedTemplate;

        if (isString(this.template)) {
            renderedTemplate = this.template;
        } else {
            renderedTemplate = this.template(data || this);
        }

        return this.astToVdom(parse(renderedTemplate.trim()));
    },