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at=f.nextPos,f.result;if(t=at,(r=xt())!==s){for(n=[],u=at,46===e.charCodeAt(at)?(o=".",at++):(o=s,yt(I)),o!==s&&(a=xt())!==s?u=o=[o,a]:(at=u,u=s);u!==s;)n.push(u),u=at,46===e.charCodeAt(at)?(o=".",at++):(o=s,yt(I)),o!==s&&(a=xt())!==s?u=o=[o,a]:(at=u,u=s);n!==s?(c=r,i=n,t=r=[].concat.apply([c],i).join("")):(at=t,t=s)}else at=t,t=s;return lt[l]={nextPos:at,result:t},t}function Et(t){return{type:"nth-child",index:{type:"literal",value:t}}}function St(t){return{type:"nth-last-child",index:{type:"literal",value:t}}}if((n=i())!==s&&at===e.length)return n;throw n!==s&&at<e.length&&yt({type:"end"}),u=it,o=ct<e.length?e.charAt(ct):null,a=ct<e.length?vt(ct,ct+1):vt(ct,ct),new t(t.buildMessage(u,o),u,o,a)}}}())}));function s(t,e){for(var r=0;r<e.length;++r){if(null==t)return t;t=t[e[r]]}return t}var c="function"==typeof WeakMap?new WeakMap:null;function i(t){if(null==t)return function(){return!0};if(null!=c){var e=c.get(t);return null!=e||(e=l(t),c.set(t,e)),e}return l(t)}function 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