dist/riot-mixin-pack.amd.js
function querySelector(sel, flag) {
      var node = this.root.querySelector(normalize(sel));
      return !flag ? node : node._tag || undefined;
    }
function querySelector(sel, flag) {
      var node = this.root.querySelector(normalize(sel));
      return !flag ? node : node._tag || undefined;
    }
function querySelector ( sel , flag ) { var node = this . root . querySelector ( normalize ( sel ) ) ; return ! flag ? node : node . _tag || undefined ; }
Gets Node or Tag by CSS selector
@param { string } sel - CSS selector
@param { boolean } flag - true for Tag
Gets Node or Tag by CSS selector