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    1 // Approach:
    2 //
    3 // 1. Get the minimatch set
    4 // 2. For each pattern in the set, PROCESS(pattern, false)
    5 // 3. Store matches per-set, then uniq them
    6 //
    7 // PROCESS(pattern, inGlobStar)
    8 // Get the first [n] items from pattern that are all strings
    9 // Join these together.  This is PREFIX.
   10 //   If there is no more remaining, then stat(PREFIX) and
   11 //   add to matches if it succeeds.  END.
   12 //
   13 // If inGlobStar and PREFIX is symlink and points to dir
   14 //   set ENTRIES = []
   15 // else readdir(PREFIX) as ENTRIES
   16 //   If fail, END
   17 //
   18 // with ENTRIES
   19 //   If pattern[n] is GLOBSTAR
   20 //     // handle the case where the globstar match is empty
   21 //     // by pruning it out, and testing the resulting pattern
   22 //     PROCESS(pattern[0..n] + pattern[n+1 .. $], false)
   23 //     // handle other cases.
   24 //     for ENTRY in ENTRIES (not dotfiles)
   25 //       // attach globstar + tail onto the entry
   26 //       // Mark that this entry is a globstar match
   27 //       PROCESS(pattern[0..n] + ENTRY + pattern[n .. $], true)
   28 //
   29 //   else // not globstar
   30 //     for ENTRY in ENTRIES (not dotfiles, unless pattern[n] is dot)
   31 //       Test ENTRY against pattern[n]
   32 //       If fails, continue
   33 //       If passes, PROCESS(pattern[0..n] + item + pattern[n+1 .. $])
   34 //
   35 // Caveat:
   36 //   Cache all stats and readdirs results to minimize syscall.  Since all
   37 //   we ever care about is existence and directory-ness, we can just keep
   38 //   `true` for files, and [children,...] for directories, or `false` for
   39 //   things that don't exist.
   40 
   41 module.exports = glob
   42 
   43 var fs = require('fs')
   44 var rp = require('fs.realpath')
   45 var minimatch = require('minimatch')
   46 var Minimatch = minimatch.Minimatch
   47 var inherits = require('inherits')
   48 var EE = require('events').EventEmitter
   49 var path = require('path')
   50 var assert = require('assert')
   51 var isAbsolute = require('path-is-absolute')
   52 var globSync = require('./sync.js')
   53 var common = require('./common.js')
   54 var alphasort = common.alphasort
   55 var alphasorti = common.alphasorti
   56 var setopts = common.setopts
   57 var ownProp = common.ownProp
   58 var inflight = require('inflight')
   59 var util = require('util')
   60 var childrenIgnored = common.childrenIgnored
   61 var isIgnored = common.isIgnored
   62 
   63 var once = require('once')
   64 
   65 function glob (pattern, options, cb) {
   66   if (typeof options === 'function') cb = options, options = {}
   67   if (!options) options = {}
   68 
   69   if (options.sync) {
   70     if (cb)
   71       throw new TypeError('callback provided to sync glob')
   72     return globSync(pattern, options)
   73   }
   74 
   75   return new Glob(pattern, options, cb)
   76 }
   77 
   78 glob.sync = globSync
   79 var GlobSync = glob.GlobSync = globSync.GlobSync
   80 
   81 // old api surface
   82 glob.glob = glob
   83 
   84 function extend (origin, add) {
   85   if (add === null || typeof add !== 'object') {
   86     return origin
   87   }
   88 
   89   var keys = Object.keys(add)
   90   var i = keys.length
   91   while (i--) {
   92     origin[keys[i]] = add[keys[i]]
   93   }
   94   return origin
   95 }
   96 
   97 glob.hasMagic = function (pattern, options_) {
   98   var options = extend({}, options_)
   99   options.noprocess = true
  100 
  101   var g = new Glob(pattern, options)
  102   var set = g.minimatch.set
  103 
  104   if (!pattern)
  105     return false
  106 
  107   if (set.length > 1)
  108     return true
  109 
  110   for (var j = 0; j < set[0].length; j++) {
  111     if (typeof set[0][j] !== 'string')
  112       return true
  113   }
  114 
  115   return false
  116 }
  117 
  118 glob.Glob = Glob
  119 inherits(Glob, EE)
  120 function Glob (pattern, options, cb) {
  121   if (typeof options === 'function') {
  122     cb = options
  123     options = null
  124   }
  125 
  126   if (options && options.sync) {
  127     if (cb)
  128       throw new TypeError('callback provided to sync glob')
  129     return new GlobSync(pattern, options)
  130   }
  131 
  132   if (!(this instanceof Glob))
  133     return new Glob(pattern, options, cb)
  134 
  135   setopts(this, pattern, options)
  136   this._didRealPath = false
  137 
  138   // process each pattern in the minimatch set
  139   var n = this.minimatch.set.length
  140 
  141   // The matches are stored as {<filename>: true,...} so that
  142   // duplicates are automagically pruned.
  143   // Later, we do an Object.keys() on these.
  144   // Keep them as a list so we can fill in when nonull is set.
  145   this.matches = new Array(n)
  146 
  147   if (typeof cb === 'function') {
  148     cb = once(cb)
  149     this.on('error', cb)
  150     this.on('end', function (matches) {
  151       cb(null, matches)
  152     })
  153   }
  154 
  155   var self = this
  156   var n = this.minimatch.set.length
  157   this._processing = 0
  158   this.matches = new Array(n)
  159 
  160   this._emitQueue = []
  161   this._processQueue = []
  162   this.paused = false
  163 
  164   if (this.noprocess)
  165     return this
  166 
  167   if (n === 0)
  168     return done()
  169 
  170   var sync = true
  171   for (var i = 0; i < n; i ++) {
  172     this._process(this.minimatch.set[i], i, false, done)
  173   }
  174   sync = false
  175 
  176   function done () {
  177     --self._processing
  178     if (self._processing <= 0) {
  179       if (sync) {
  180         process.nextTick(function () {
  181           self._finish()
  182         })
  183       } else {
  184         self._finish()
  185       }
  186     }
  187   }
  188 }
  189 
  190 Glob.prototype._finish = function () {
  191   assert(this instanceof Glob)
  192   if (this.aborted)
  193     return
  194 
  195   if (this.realpath && !this._didRealpath)
  196     return this._realpath()
  197 
  198   common.finish(this)
  199   this.emit('end', this.found)
  200 }
  201 
  202 Glob.prototype._realpath = function () {
  203   if (this._didRealpath)
  204     return
  205 
  206   this._didRealpath = true
  207 
  208   var n = this.matches.length
  209   if (n === 0)
  210     return this._finish()
  211 
  212   var self = this
  213   for (var i = 0; i < this.matches.length; i++)
  214     this._realpathSet(i, next)
  215 
  216   function next () {
  217     if (--n === 0)
  218       self._finish()
  219   }
  220 }
  221 
  222 Glob.prototype._realpathSet = function (index, cb) {
  223   var matchset = this.matches[index]
  224   if (!matchset)
  225     return cb()
  226 
  227   var found = Object.keys(matchset)
  228   var self = this
  229   var n = found.length
  230 
  231   if (n === 0)
  232     return cb()
  233 
  234   var set = this.matches[index] = Object.create(null)
  235   found.forEach(function (p, i) {
  236     // If there's a problem with the stat, then it means that
  237     // one or more of the links in the realpath couldn't be
  238     // resolved.  just return the abs value in that case.
  239     p = self._makeAbs(p)
  240     rp.realpath(p, self.realpathCache, function (er, real) {
  241       if (!er)
  242         set[real] = true
  243       else if (er.syscall === 'stat')
  244         set[p] = true
  245       else
  246         self.emit('error', er) // srsly wtf right here
  247 
  248       if (--n === 0) {
  249         self.matches[index] = set
  250         cb()
  251       }
  252     })
  253   })
  254 }
  255 
  256 Glob.prototype._mark = function (p) {
  257   return common.mark(this, p)
  258 }
  259 
  260 Glob.prototype._makeAbs = function (f) {
  261   return common.makeAbs(this, f)
  262 }
  263 
  264 Glob.prototype.abort = function () {
  265   this.aborted = true
  266   this.emit('abort')
  267 }
  268 
  269 Glob.prototype.pause = function () {
  270   if (!this.paused) {
  271     this.paused = true
  272     this.emit('pause')
  273   }
  274 }
  275 
  276 Glob.prototype.resume = function () {
  277   if (this.paused) {
  278     this.emit('resume')
  279     this.paused = false
  280     if (this._emitQueue.length) {
  281       var eq = this._emitQueue.slice(0)
  282       this._emitQueue.length = 0
  283       for (var i = 0; i < eq.length; i ++) {
  284         var e = eq[i]
  285         this._emitMatch(e[0], e[1])
  286       }
  287     }
  288     if (this._processQueue.length) {
  289       var pq = this._processQueue.slice(0)
  290       this._processQueue.length = 0
  291       for (var i = 0; i < pq.length; i ++) {
  292         var p = pq[i]
  293         this._processing--
  294         this._process(p[0], p[1], p[2], p[3])
  295       }
  296     }
  297   }
  298 }
  299 
  300 Glob.prototype._process = function (pattern, index, inGlobStar, cb) {
  301   assert(this instanceof Glob)
  302   assert(typeof cb === 'function')
  303 
  304   if (this.aborted)
  305     return
  306 
  307   this._processing++
  308   if (this.paused) {
  309     this._processQueue.push([pattern, index, inGlobStar, cb])
  310     return
  311   }
  312 
  313   //console.error('PROCESS %d', this._processing, pattern)
  314 
  315   // Get the first [n] parts of pattern that are all strings.
  316   var n = 0
  317   while (typeof pattern[n] === 'string') {
  318     n ++
  319   }
  320   // now n is the index of the first one that is *not* a string.
  321 
  322   // see if there's anything else
  323   var prefix
  324   switch (n) {
  325     // if not, then this is rather simple
  326     case pattern.length:
  327       this._processSimple(pattern.join('/'), index, cb)
  328       return
  329 
  330     case 0:
  331       // pattern *starts* with some non-trivial item.
  332       // going to readdir(cwd), but not include the prefix in matches.
  333       prefix = null
  334       break
  335 
  336     default:
  337       // pattern has some string bits in the front.
  338       // whatever it starts with, whether that's 'absolute' like /foo/bar,
  339       // or 'relative' like '../baz'
  340       prefix = pattern.slice(0, n).join('/')
  341       break
  342   }
  343 
  344   var remain = pattern.slice(n)
  345 
  346   // get the list of entries.
  347   var read
  348   if (prefix === null)
  349     read = '.'
  350   else if (isAbsolute(prefix) || isAbsolute(pattern.join('/'))) {
  351     if (!prefix || !isAbsolute(prefix))
  352       prefix = '/' + prefix
  353     read = prefix
  354   } else
  355     read = prefix
  356 
  357   var abs = this._makeAbs(read)
  358 
  359   //if ignored, skip _processing
  360   if (childrenIgnored(this, read))
  361     return cb()
  362 
  363   var isGlobStar = remain[0] === minimatch.GLOBSTAR
  364   if (isGlobStar)
  365     this._processGlobStar(prefix, read, abs, remain, index, inGlobStar, cb)
  366   else
  367     this._processReaddir(prefix, read, abs, remain, index, inGlobStar, cb)
  368 }
  369 
  370 Glob.prototype._processReaddir = function (prefix, read, abs, remain, index, inGlobStar, cb) {
  371   var self = this
  372   this._readdir(abs, inGlobStar, function (er, entries) {
  373     return self._processReaddir2(prefix, read, abs, remain, index, inGlobStar, entries, cb)
  374   })
  375 }
  376 
  377 Glob.prototype._processReaddir2 = function (prefix, read, abs, remain, index, inGlobStar, entries, cb) {
  378 
  379   // if the abs isn't a dir, then nothing can match!
  380   if (!entries)
  381     return cb()
  382 
  383   // It will only match dot entries if it starts with a dot, or if
  384   // dot is set.  Stuff like @(.foo|.bar) isn't allowed.
  385   var pn = remain[0]
  386   var negate = !!this.minimatch.negate
  387   var rawGlob = pn._glob
  388   var dotOk = this.dot || rawGlob.charAt(0) === '.'
  389 
  390   var matchedEntries = []
  391   for (var i = 0; i < entries.length; i++) {
  392     var e = entries[i]
  393     if (e.charAt(0) !== '.' || dotOk) {
  394       var m
  395       if (negate && !prefix) {
  396         m = !e.match(pn)
  397       } else {
  398         m = e.match(pn)
  399       }
  400       if (m)
  401         matchedEntries.push(e)
  402     }
  403   }
  404 
  405   //console.error('prd2', prefix, entries, remain[0]._glob, matchedEntries)
  406 
  407   var len = matchedEntries.length
  408   // If there are no matched entries, then nothing matches.
  409   if (len === 0)
  410     return cb()
  411 
  412   // if this is the last remaining pattern bit, then no need for
  413   // an additional stat *unless* the user has specified mark or
  414   // stat explicitly.  We know they exist, since readdir returned
  415   // them.
  416 
  417   if (remain.length === 1 && !this.mark && !this.stat) {
  418     if (!this.matches[index])
  419       this.matches[index] = Object.create(null)
  420 
  421     for (var i = 0; i < len; i ++) {
  422       var e = matchedEntries[i]
  423       if (prefix) {
  424         if (prefix !== '/')
  425           e = prefix + '/' + e
  426         else
  427           e = prefix + e
  428       }
  429 
  430       if (e.charAt(0) === '/' && !this.nomount) {
  431         e = path.join(this.root, e)
  432       }
  433       this._emitMatch(index, e)
  434     }
  435     // This was the last one, and no stats were needed
  436     return cb()
  437   }
  438 
  439   // now test all matched entries as stand-ins for that part
  440   // of the pattern.
  441   remain.shift()
  442   for (var i = 0; i < len; i ++) {
  443     var e = matchedEntries[i]
  444     var newPattern
  445     if (prefix) {
  446       if (prefix !== '/')
  447         e = prefix + '/' + e
  448       else
  449         e = prefix + e
  450     }
  451     this._process([e].concat(remain), index, inGlobStar, cb)
  452   }
  453   cb()
  454 }
  455 
  456 Glob.prototype._emitMatch = function (index, e) {
  457   if (this.aborted)
  458     return
  459 
  460   if (isIgnored(this, e))
  461     return
  462 
  463   if (this.paused) {
  464     this._emitQueue.push([index, e])
  465     return
  466   }
  467 
  468   var abs = isAbsolute(e) ? e : this._makeAbs(e)
  469 
  470   if (this.mark)
  471     e = this._mark(e)
  472 
  473   if (this.absolute)
  474     e = abs
  475 
  476   if (this.matches[index][e])
  477     return
  478 
  479   if (this.nodir) {
  480     var c = this.cache[abs]
  481     if (c === 'DIR' || Array.isArray(c))
  482       return
  483   }
  484 
  485   this.matches[index][e] = true
  486 
  487   var st = this.statCache[abs]
  488   if (st)
  489     this.emit('stat', e, st)
  490 
  491   this.emit('match', e)
  492 }
  493 
  494 Glob.prototype._readdirInGlobStar = function (abs, cb) {
  495   if (this.aborted)
  496     return
  497 
  498   // follow all symlinked directories forever
  499   // just proceed as if this is a non-globstar situation
  500   if (this.follow)
  501     return this._readdir(abs, false, cb)
  502 
  503   var lstatkey = 'lstat\0' + abs
  504   var self = this
  505   var lstatcb = inflight(lstatkey, lstatcb_)
  506 
  507   if (lstatcb)
  508     fs.lstat(abs, lstatcb)
  509 
  510   function lstatcb_ (er, lstat) {
  511     if (er && er.code === 'ENOENT')
  512       return cb()
  513 
  514     var isSym = lstat && lstat.isSymbolicLink()
  515     self.symlinks[abs] = isSym
  516 
  517     // If it's not a symlink or a dir, then it's definitely a regular file.
  518     // don't bother doing a readdir in that case.
  519     if (!isSym && lstat && !lstat.isDirectory()) {
  520       self.cache[abs] = 'FILE'
  521       cb()
  522     } else
  523       self._readdir(abs, false, cb)
  524   }
  525 }
  526 
  527 Glob.prototype._readdir = function (abs, inGlobStar, cb) {
  528   if (this.aborted)
  529     return
  530 
  531   cb = inflight('readdir\0'+abs+'\0'+inGlobStar, cb)
  532   if (!cb)
  533     return
  534 
  535   //console.error('RD %j %j', +inGlobStar, abs)
  536   if (inGlobStar && !ownProp(this.symlinks, abs))
  537     return this._readdirInGlobStar(abs, cb)
  538 
  539   if (ownProp(this.cache, abs)) {
  540     var c = this.cache[abs]
  541     if (!c || c === 'FILE')
  542       return cb()
  543 
  544     if (Array.isArray(c))
  545       return cb(null, c)
  546   }
  547 
  548   var self = this
  549   fs.readdir(abs, readdirCb(this, abs, cb))
  550 }
  551 
  552 function readdirCb (self, abs, cb) {
  553   return function (er, entries) {
  554     if (er)
  555       self._readdirError(abs, er, cb)
  556     else
  557       self._readdirEntries(abs, entries, cb)
  558   }
  559 }
  560 
  561 Glob.prototype._readdirEntries = function (abs, entries, cb) {
  562   if (this.aborted)
  563     return
  564 
  565   // if we haven't asked to stat everything, then just
  566   // assume that everything in there exists, so we can avoid
  567   // having to stat it a second time.
  568   if (!this.mark && !this.stat) {
  569     for (var i = 0; i < entries.length; i ++) {
  570       var e = entries[i]
  571       if (abs === '/')
  572         e = abs + e
  573       else
  574         e = abs + '/' + e
  575       this.cache[e] = true
  576     }
  577   }
  578 
  579   this.cache[abs] = entries
  580   return cb(null, entries)
  581 }
  582 
  583 Glob.prototype._readdirError = function (f, er, cb) {
  584   if (this.aborted)
  585     return
  586 
  587   // handle errors, and cache the information
  588   switch (er.code) {
  589     case 'ENOTSUP': // https://github.com/isaacs/node-glob/issues/205
  590     case 'ENOTDIR': // totally normal. means it *does* exist.
  591       var abs = this._makeAbs(f)
  592       this.cache[abs] = 'FILE'
  593       if (abs === this.cwdAbs) {
  594         var error = new Error(er.code + ' invalid cwd ' + this.cwd)
  595         error.path = this.cwd
  596         error.code = er.code
  597         this.emit('error', error)
  598         this.abort()
  599       }
  600       break
  601 
  602     case 'ENOENT': // not terribly unusual
  603     case 'ELOOP':
  604     case 'ENAMETOOLONG':
  605     case 'UNKNOWN':
  606       this.cache[this._makeAbs(f)] = false
  607       break
  608 
  609     default: // some unusual error.  Treat as failure.
  610       this.cache[this._makeAbs(f)] = false
  611       if (this.strict) {
  612         this.emit('error', er)
  613         // If the error is handled, then we abort
  614         // if not, we threw out of here
  615         this.abort()
  616       }
  617       if (!this.silent)
  618         console.error('glob error', er)
  619       break
  620   }
  621 
  622   return cb()
  623 }
  624 
  625 Glob.prototype._processGlobStar = function (prefix, read, abs, remain, index, inGlobStar, cb) {
  626   var self = this
  627   this._readdir(abs, inGlobStar, function (er, entries) {
  628     self._processGlobStar2(prefix, read, abs, remain, index, inGlobStar, entries, cb)
  629   })
  630 }
  631 
  632 
  633 Glob.prototype._processGlobStar2 = function (prefix, read, abs, remain, index, inGlobStar, entries, cb) {
  634   //console.error('pgs2', prefix, remain[0], entries)
  635 
  636   // no entries means not a dir, so it can never have matches
  637   // foo.txt/** doesn't match foo.txt
  638   if (!entries)
  639     return cb()
  640 
  641   // test without the globstar, and with every child both below
  642   // and replacing the globstar.
  643   var remainWithoutGlobStar = remain.slice(1)
  644   var gspref = prefix ? [ prefix ] : []
  645   var noGlobStar = gspref.concat(remainWithoutGlobStar)
  646 
  647   // the noGlobStar pattern exits the inGlobStar state
  648   this._process(noGlobStar, index, false, cb)
  649 
  650   var isSym = this.symlinks[abs]
  651   var len = entries.length
  652 
  653   // If it's a symlink, and we're in a globstar, then stop
  654   if (isSym && inGlobStar)
  655     return cb()
  656 
  657   for (var i = 0; i < len; i++) {
  658     var e = entries[i]
  659     if (e.charAt(0) === '.' && !this.dot)
  660       continue
  661 
  662     // these two cases enter the inGlobStar state
  663     var instead = gspref.concat(entries[i], remainWithoutGlobStar)
  664     this._process(instead, index, true, cb)
  665 
  666     var below = gspref.concat(entries[i], remain)
  667     this._process(below, index, true, cb)
  668   }
  669 
  670   cb()
  671 }
  672 
  673 Glob.prototype._processSimple = function (prefix, index, cb) {
  674   // XXX review this.  Shouldn't it be doing the mounting etc
  675   // before doing stat?  kinda weird?
  676   var self = this
  677   this._stat(prefix, function (er, exists) {
  678     self._processSimple2(prefix, index, er, exists, cb)
  679   })
  680 }
  681 Glob.prototype._processSimple2 = function (prefix, index, er, exists, cb) {
  682 
  683   //console.error('ps2', prefix, exists)
  684 
  685   if (!this.matches[index])
  686     this.matches[index] = Object.create(null)
  687 
  688   // If it doesn't exist, then just mark the lack of results
  689   if (!exists)
  690     return cb()
  691 
  692   if (prefix && isAbsolute(prefix) && !this.nomount) {
  693     var trail = /[\/\\]$/.test(prefix)
  694     if (prefix.charAt(0) === '/') {
  695       prefix = path.join(this.root, prefix)
  696     } else {
  697       prefix = path.resolve(this.root, prefix)
  698       if (trail)
  699         prefix += '/'
  700     }
  701   }
  702 
  703   if (process.platform === 'win32')
  704     prefix = prefix.replace(/\\/g, '/')
  705 
  706   // Mark this as a match
  707   this._emitMatch(index, prefix)
  708   cb()
  709 }
  710 
  711 // Returns either 'DIR', 'FILE', or false
  712 Glob.prototype._stat = function (f, cb) {
  713   var abs = this._makeAbs(f)
  714   var needDir = f.slice(-1) === '/'
  715 
  716   if (f.length > this.maxLength)
  717     return cb()
  718 
  719   if (!this.stat && ownProp(this.cache, abs)) {
  720     var c = this.cache[abs]
  721 
  722     if (Array.isArray(c))
  723       c = 'DIR'
  724 
  725     // It exists, but maybe not how we need it
  726     if (!needDir || c === 'DIR')
  727       return cb(null, c)
  728 
  729     if (needDir && c === 'FILE')
  730       return cb()
  731 
  732     // otherwise we have to stat, because maybe c=true
  733     // if we know it exists, but not what it is.
  734   }
  735 
  736   var exists
  737   var stat = this.statCache[abs]
  738   if (stat !== undefined) {
  739     if (stat === false)
  740       return cb(null, stat)
  741     else {
  742       var type = stat.isDirectory() ? 'DIR' : 'FILE'
  743       if (needDir && type === 'FILE')
  744         return cb()
  745       else
  746         return cb(null, type, stat)
  747     }
  748   }
  749 
  750   var self = this
  751   var statcb = inflight('stat\0' + abs, lstatcb_)
  752   if (statcb)
  753     fs.lstat(abs, statcb)
  754 
  755   function lstatcb_ (er, lstat) {
  756     if (lstat && lstat.isSymbolicLink()) {
  757       // If it's a symlink, then treat it as the target, unless
  758       // the target does not exist, then treat it as a file.
  759       return fs.stat(abs, function (er, stat) {
  760         if (er)
  761           self._stat2(f, abs, null, lstat, cb)
  762         else
  763           self._stat2(f, abs, er, stat, cb)
  764       })
  765     } else {
  766       self._stat2(f, abs, er, lstat, cb)
  767     }
  768   }
  769 }
  770 
  771 Glob.prototype._stat2 = function (f, abs, er, stat, cb) {
  772   if (er && (er.code === 'ENOENT' || er.code === 'ENOTDIR')) {
  773     this.statCache[abs] = false
  774     return cb()
  775   }
  776 
  777   var needDir = f.slice(-1) === '/'
  778   this.statCache[abs] = stat
  779 
  780   if (abs.slice(-1) === '/' && stat && !stat.isDirectory())
  781     return cb(null, false, stat)
  782 
  783   var c = true
  784   if (stat)
  785     c = stat.isDirectory() ? 'DIR' : 'FILE'
  786   this.cache[abs] = this.cache[abs] || c
  787 
  788   if (needDir && c === 'FILE')
  789     return cb()
  790 
  791   return cb(null, c, stat)
  792 }