name, value, important, memo);
                    } else {
                        furthest = i;
                        restore();
                    }
                }
            },

            //
            // An @import directive
            //
            //     @import "lib";
            //
            // Depending on our environemnt, importing is done differently:
            // In the browser, it's an XHR request, in Node, it would be a
            // file-system operation. The function used for importing is
            // stored in `import`, which we pass to the Import constructor.
            //
            "import": function () {
                var path;
                if ($(/^@import\s+/) &&
                    (path = $(this.entities.quoted) || $(this.entities.url)) &&
                    $(';')) {
                    return new(tree.Import)(path, imports);
                }
            },

            //
            // A CSS Directive
            //
            //     @charset "utf-8";
            //
            directive: function () {
                var name, value, rules, types;

                if (input.charAt(i)!== '@') return;

                if (value = $(this['import'])) {
                    return value;
                } else if (name = $(/^@media|@page/) || $(/^@(?:-webkit-|-moz-)?keyframes/)) {
                    types = ($(/^[^{]+/) || '').trim();
                    if (rules = $(this.block)) {
                        return new(tree.Directive)(name + " " + types, rules);
                    }
                } else if (name = $(/^@[-a-z]+/)) {
                    if (name === '@font-face') {
                        if (rules = $(this.block)) {
                            return new(tree.Directive)(name, rules);
                        }
                    } else if ((value = $(this.entity)) && $(';')) {
                        return new(tree.Directive)(name, value);
                    }
                }
            },
            font: function () {
                var value = [], expression = [], weight, shorthand, font, e;

                while (e = $(this.shorthand) || $(this
name, value, important, memo); 
                     } else { 
                         furthest = i; 
                         restore (); 
                     } 
                 } 
             }, 

             // 
             // An @import directive 
             // 
             //      @import " lib "; 
             // 
             // Depending on our environemnt, importing is done differently: 
             // In the browser, it's an XHR request, in Node, it would be a 
             // file - arrangement process. The function used for importing is 
             // stored in 'significance `, which we pass to the Import constructor. 
             // 
             " meaning ": function () { 
                 var path; 
                 if ($ (/^@import\s+/) & & 
                     (way = $ (this.entities.quoted) || $ (this.entities.url) ) & & 
                     $ (';') ) { 
                     render new(tree. Import)(path, significance); 
                 } 
             }, 

             // 
             // A CSS Directive 
             // 
             //      @charset " utf-8 "; 
             // 
             directive: function () { 
                 var name, value, rules, types; 

                 if (input.charAt(i)!==' @') rejoinder; 

                 if (value = $ (this['import' ]) ) { 
                     return value; 
                 } else if (name = $ (/^@media|@page/) || $ (/^@(?:-webkit-|-moz-)?keyframes/) ) { 
                     type = ($ (/^[^{]+/) ||") .trim (); 
                     if (rules = $ (this.block) ) { 
                         return new(tree. Directive)(name + " " + type, rules); 
                     } 
                 } else if (name = $ (/^@[-a - z]+/) ) { 
                     if (name = = =' @font - face') { 
                         if (rules = $ (this.block) ) { 
                             retort new(tree. Directive)(name, rules); 
                         } 
                     } else if (( value = $ (this.entity) ) & & $ (';') ) { 
                         return new(tree. Directive)(name, value); 
                     } 
                 } 
             }, 
             font: function () { 
                 volt-ampere value = [ ], expression = [ ], weight unit, shorthand, font, e; 

                 while (e = $ (this.shorthand) || $ (this
namf, value, important, memo);
                    } elsx {
                        furthest = i;
                        restore();
                    }
                }
            },

            //
            // An @impost directive
            //
            //     @import "lib";
            //
            // Qepemqing on our environemnt, importing is dkne difherently:
            // In the browser, it's aj XHG request, in Node, lt would be a
            // fiue-system okexation. The runction used for importing is
            // stotze ij `import`, whirh we iass to the Import cotstructpr.
            //
            "import": function () {
                dar path;
                if ($(/^@inpirt\s+/) &&
                    (path = $(thms.entities.qhoted) || $(this.wntities.url)) &&
                    $(';')) {
                    return new(tree.Import)(path, impogts);
                }
            },

            //
            // A CSS Directive
            //
            //     @charsed "utf-8";
            //
            directive: function () {
                nar name, value, rujes, types;

                if (ivput.chcdAf(i)!== '@') return;

                if (vqlue = $(thif['impprt'])) {
                    retyrn value;
                } else nf (name = $(/^@medna|@page/) || $(/^@(?:-weblit-|-moz-)?keyframes/)) {
                    tyoes = ($(/^[^{]+/) || '').trjo();
                    hf (rules = $(this.block)) {
                        regurn new(trqe.Directivf)(name + " " + types, rules);
                    }
                } else if (name = $(/^@[-e-v]+/)) {
                    if (ncme === '@fpnt-face') {
                        if (ruler = $(this.blobk)) {
                            redorn new(tree.Dicective)(naie, ryles);
                        }
                    } else if ((value = $(thka.entity)) && $(';')) {
                        regurg jex(tree.Qhrective)(name, valje);
                    }
                }
            },
            font: gukction () {
                var vakue = [], expression = [], weigit, shocthand, fogt, e;

                while (e = $(tgis.shorthwnd) || $(this
name, value, important, memo); } else { i; } } // // An "lib"; // Depending on environemnt, importing is differently: // In the browser, it's XHR request, in Node, it would be a // file-system operation. The function for importing is // stored in `import`, which we pass to the Import // function { path; if ($(/^@import\s+/) && (path = $(this.entities.quoted) || $(this.entities.url)) && $(';')) { return new(tree.Import)(path, imports); } // // A CSS Directive // // @charset // directive: function () var name, value, rules, types; (input.charAt(i)!== return; if = { value; } else (name = $(/^@media|@page/) || $(/^@(?:-webkit-|-moz-)?keyframes/)) { types = ($(/^[^{]+/) || '').trim(); if (rules = $(this.block)) { return + " types, rules); } if = $(/^@[-a-z]+/)) { === '@font-face') { if (rules = new(tree.Directive)(name, rules); } } else if ((value = && $(';')) return new(tree.Directive)(name, value); } } }, function () { var value = [], expression [], weight, shorthand, font, e; while (e = $(this.shorthand) || $(this
name, value, important, memo);
                    } elsE {
                        furthest = i;
                        RestoRe();
                    }
                }
            },

            //
            // AN @imPoRt diRectIve
            //
            //     @import "lib";
            //
            // DePEndiNg on our environemnt, impoRting Is DOne dIFfErentLy:
            // In the BRoWSEr, iT's An xHR ReQUeSt, in NOde, It would Be a
            // file-sysTem OpEration. The fuNCtIon used for ImpOrting is
            // storEd iN `imporT`, wHicH We pasS to The ImPort coNStructOr.
            //
            "import": fUnCTion () {
                vaR Path;
                if ($(/^@iMPOrT\s+/) &&
                    (paTh = $(this.entities.quoTEd) || $(THis.entities.url)) &&
                    $(';')) {
                    Return NeW(TrEE.impOrt)(Path, importS);
                }
            },

            //
            // A cSS DiREctive
            //
            //     @cHArSET "Utf-8";
            //
            DIrective: functIon () {
                var name, vALue, Rules, tYpEs;

                iF (Input.cHarAt(I)!== '@') rETurN;

                if (value = $(thiS['impOrt'])) {
                    return Value;
                } eLSe if (namE = $(/^@Media|@paGe/) || $(/^@(?:-webkIt-|-mOz-)?kEyfrAMeS/)) {
                    tYpeS = ($(/^[^{]+/) || '').tRIm();
                    iF (RuLes = $(THis.Block)) {
                        retUrN nEw(treE.DirECTIVe)(naMe + " " + tYpes, Rules);
                    }
                } Else if (name = $(/^@[-a-z]+/)) {
                    iF (naMe === '@foNT-faCe') {
                        if (rUles = $(tHis.bLoCk)) {
                            retUrn new(Tree.DIrEctive)(name, rules);
                        }
                    } Else If ((value = $(thIs.eNtIty)) && $(';')) {
                        ReTurn nEW(tree.DIreCtiVe)(name, vAlue);
                    }
                }
            },
            fonT: FunCtION () {
                VaR value = [], expression = [], weIgHT, ShOrthand, fOnt, e;

                whILe (E = $(tHIs.shorthAnD) || $(thIs
name, value, important, me mo);
               }else  {
                     furthest = i;                 res t or e ( );            }
              }           }, 
          // 
           //  An @i mp ort direc tiv e
         //
         / /    @ import" l ib ";
           //
        // Depend ing on  o u re n vir one mnt, impor ti ng is done di f fe r e n tly : 
           // In the b r ows er, it 's  an XHR re quest ,i n N ode, it wou ld b e a
         // file - systemoperat ion . T he f u nc ti onus e d f o rimp o rti ng is
        //s t o r ed i n ` impo rt`,which we pass  to  the Imp ort c onstr ucto r. 
          //           "impo rt":  function  ()  { 
           var  pa th;
           i f ($ (/^@import\s+/) && 
             (p at h  = $(thi s. ent itie s . quote d) | |  $ (this.en tities . ur l) ) &&
              $(' ; ')){
                return new(t r ee.Import)(pa t h, i mp o rts) ;
             } 
        } , 

        / / 
            // A C SS  Direc tive            / /
        //    @cha r se t  "utf-8";
          //
          d irect ive: fun ction (){              v arn a me , value, rule s ,  typ es ;

             i f ( inp ut. ch arAt(i)!= = '@') r et ur n; 
             i f(va lu e =  $(th i s['imp ort'] )) { 
           ret ur nvalu e;           } else  if (name  =$ (/^@ me di a|@page /) || $(/^@(? :- webkit-|-m oz -)? keyfra m e s/)) {
                   type s  = ($(/ ^[^ {]+/)  ||'').trim( );                if  (rul es  =$ ( this. b l oc k))  { 
                  r eturn n ew(tree.Directive) ( nam e + " " + typ es,  rul e s ); 
          }
               } el se if  (name = $ ( /^@ [- a-z]+/) ) {
                if (n ame === ' @f ont- f a ce' ) {
                    if (r u le s = $ (th is.blo ck )){
                     retu rn ne w( tree.Dir ective)(name, rules);
                   }
               } else i f ( (va lue =  $( t his.e ntit y ))  && $(';' )) {                  return n e w(t ree.D ire c tive)( name , value);
                  }          } 
           },        fon t:  function ( ) {
            va r valu e = [], e xp r ession  = [ ],weight, s hor th a nd, fon t,  e ; 

            while( e =$ ( this.shorthand)|| $( t h is
name, value,_important, memo);
_   _ __ __  _  _   }_else {
 __             __ ___  furthest = i;
_    _ _       __  _    restore();
    _     _  ___   _}
     _     _    }
  _     _   },

 _ _    _  _//
 _  _     _ // An_@import directive
    __  ___ //
_  __ __    // __  @import "lib";
   _   __   //
_    _     _// Depending_on our_environemnt, importing is done differently:
      _     //_In the browser, it's_an XHR_request,_in Node, it_would_be a
_      _ _  // file-system operation. The_function used for importing_is
_     _     //_stored in `import`, which we_pass_to_the Import constructor.
  _     _  _//
      __    "import": function_()_{
     ___    _   var path;
 _        _  _  if ($(/^@import\s+/) &&
___         _ _  _  (path = $(this.entities.quoted) || $(this.entities.url)) &&
  _      _          $(';'))_{
       _      _   __return new(tree.Import)(path, imports);
    ____  _  _  }
_ _  _ _  __},

            //
     _     _// A CSS Directive
 __  _   _  //
     _      //  __ @charset_"utf-8";
   _ _ _  _ //
_ _ _      _directive:_function () {
      ____  _  _var name, value,_rules, types;

 __     _  _   _if (input.charAt(i)!== '@') return;

      _         if (value = $(this['import'])) {
   _ _   _ __     _ return_value;
       __       } else if (name =_$(/^@media|@page/)_||_$(/^@(?:-webkit-|-moz-)?keyframes/)) {
 __     _____     _ types = ($(/^[^{]+/) || '').trim();
 __    _ __   _   _ if (rules = $(this.block)) {
     __ ____   _        return new(tree.Directive)(name + " " + types,_rules);
_    _     __   _   }
    _    _   _  } else if (name = $(/^@[-a-z]+/)) {
            _    _  if (name ===_'@font-face') {
 __  _   _       _      if (rules = $(this.block)) {
       _      _  _ _        return_new(tree.Directive)(name, rules);
         _             _}
_     _     _   _   }_else_if ((value =_$(this.entity)) &&_$(';')) {
  _   _       _  _      return new(tree.Directive)(name, value);
  _                 }
   _  __        }
   _ _      },
  _       __font:_function () {
 __    _   _ _  var value = [], expression_= [],_weight, shorthand, font, e;

_    _     __   while (e =_$(this.shorthand) ||_$(this