st e=t.children[0],s=this._resolvePossibleFunction(this._config.extraClass);return s&&e.classList.add(...s.split(" ")),e}_typeCheckConfig(t){super._typeCheckConfig(t),this._checkContent(t.content)}_checkContent(t){for(const[e,s]of Object.entries(t))super._typeCheckConfig({selector:e,entry:s},ye)}_setContent(t,e,s){const i=K.findOne(s,t);i&&((e=this._resolvePossibleFunction(e))?l(e)?this._putElementInTemplate(c(e),i):this._config.html?i.innerHTML=this._maybeSanitize(e):i.textContent=e:i.remove())...

ig.extraClass)\n\n    if (extraClass) {\n      template.classList.add(...extraClass.split(' '))\n    }\n\n    return template\n  }\n\n  // Private\n  _typeCheckConfig(config) {\n    super._typeCheckConfig(config)\n    this._checkContent(config.content)\n  }\n\n  _checkContent(arg) {\n    for (const [selector, content] of Object.entries(arg)) {\n      super._typeCheckConfig({ selector, entry: content }, DefaultContentType)\n    }\n  }\n\n  _setContent(template, content, selector) {\n    const templateElement...