node_modules/rimraf/rimraf.js - Code Metrics - Inspection of "Firebase (#34)" - LCSOGthb/Tools - Measure and Improve Code Quality continuously with Scrutinizer

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by LCS

created 2025-04-21 14:54 UTC

node_modules/rimraf/rimraf.js F

↳ Parent: Project

Complexity

Total Complexity	90
Complexity/F	3.33

Size

Lines of Code	372
Function Count	27

Duplication

Duplicated Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
eloc	239
dl	0
loc	372
rs	2
c	0
b	0
f	0
wmc	90
mnd	63
bc	63
fnc	27
bpm	2.3333
cpm	3.3333
noi	58

How to fix Complexity

module.exports = rimraf
rimraf.sync = rimrafSync

var assert = require("assert")
var path = require("path")
var fs = require("fs")
var glob = undefined
try {
  glob = require("glob")
} catch (_err) {
  // treat glob as optional.
}
var _0666 = parseInt('666', 8)

var defaultGlobOpts = {
  nosort: true,
  silent: true
}

// for EMFILE handling
var timeout = 0

var isWindows = (process.platform === "win32")

function defaults (options) {
  var methods = [
    'unlink',
    'chmod',
    'stat',
    'lstat',
    'rmdir',
    'readdir'
  ]
  methods.forEach(function(m) {
    options[m] = options[m] || fs[m]
    m = m + 'Sync'
    options[m] = options[m] || fs[m]
  })

  options.maxBusyTries = options.maxBusyTries || 3
  options.emfileWait = options.emfileWait || 1000
  if (options.glob === false) {
    options.disableGlob = true
  }
  if (options.disableGlob !== true && glob === undefined) {
    throw Error('glob dependency not found, set `options.disableGlob = true` if intentional')
  }
  options.disableGlob = options.disableGlob || false
  options.glob = options.glob || defaultGlobOpts
}

function rimraf (p, options, cb) {
  if (typeof options === 'function') {
    cb = options
    options = {}
  }

  assert(p, 'rimraf: missing path')
  assert.equal(typeof p, 'string', 'rimraf: path should be a string')
  assert.equal(typeof cb, 'function', 'rimraf: callback function required')
  assert(options, 'rimraf: invalid options argument provided')
  assert.equal(typeof options, 'object', 'rimraf: options should be object')

  defaults(options)

  var busyTries = 0
  var errState = null
  var n = 0

  if (options.disableGlob || !glob.hasMagic(p))
    return afterGlob(null, [p])

  options.lstat(p, function (er, stat) {
    if (!er)
      return afterGlob(null, [p])

    glob(p, options.glob, afterGlob)
  })

  function next (er) {
    errState = errState || er
    if (--n === 0)
      cb(errState)
  }

  function afterGlob (er, results) {
    if (er)
      return cb(er)

    n = results.length
    if (n === 0)
      return cb()

    results.forEach(function (p) {
      rimraf_(p, options, function CB (er) {
        if (er) {
          if ((er.code === "EBUSY" || er.code === "ENOTEMPTY" || er.code === "EPERM") &&
              busyTries < options.maxBusyTries) {
            busyTries ++
            var time = busyTries * 100
            // try again, with the same exact callback as this one.
            return setTimeout(function () {
              rimraf_(p, options, CB)
            }, time)
          }

          // this one won't happen if graceful-fs is used.
          if (er.code === "EMFILE" && timeout < options.emfileWait) {
            return setTimeout(function () {
              rimraf_(p, options, CB)
            }, timeout ++)
          }

          // already gone
          if (er.code === "ENOENT") er = null
        }

        timeout = 0
        next(er)
      })
    })
  }
}

// Two possible strategies.
// 1. Assume it's a file.  unlink it, then do the dir stuff on EPERM or EISDIR
// 2. Assume it's a directory.  readdir, then do the file stuff on ENOTDIR
//
// Both result in an extra syscall when you guess wrong.  However, there
// are likely far more normal files in the world than directories.  This
// is based on the assumption that a the average number of files per
// directory is >= 1.
//
// If anyone ever complains about this, then I guess the strategy could
// be made configurable somehow.  But until then, YAGNI.
function rimraf_ (p, options, cb) {
  assert(p)
  assert(options)
  assert(typeof cb === 'function')

  // sunos lets the root user unlink directories, which is... weird.
  // so we have to lstat here and make sure it's not a dir.
  options.lstat(p, function (er, st) {
    if (er && er.code === "ENOENT")
      return cb(null)

    // Windows can EPERM on stat.  Life is suffering.
    if (er && er.code === "EPERM" && isWindows)
      fixWinEPERM(p, options, er, cb)

    if (st && st.isDirectory())
      return rmdir(p, options, er, cb)

    options.unlink(p, function (er) {
      if (er) {
        if (er.code === "ENOENT")
          return cb(null)
        if (er.code === "EPERM")
          return (isWindows)
            ? fixWinEPERM(p, options, er, cb)
            : rmdir(p, options, er, cb)
        if (er.code === "EISDIR")
          return rmdir(p, options, er, cb)
      }
      return cb(er)
    })
  })
}

function fixWinEPERM (p, options, er, cb) {
  assert(p)
  assert(options)
  assert(typeof cb === 'function')
  if (er)
    assert(er instanceof Error)

  options.chmod(p, _0666, function (er2) {
    if (er2)
      cb(er2.code === "ENOENT" ? null : er)
    else
      options.stat(p, function(er3, stats) {
        if (er3)
          cb(er3.code === "ENOENT" ? null : er)
        else if (stats.isDirectory())
          rmdir(p, options, er, cb)
        else
          options.unlink(p, cb)
      })
  })
}

function fixWinEPERMSync (p, options, er) {
  assert(p)
  assert(options)
  if (er)
    assert(er instanceof Error)

  try {
    options.chmodSync(p, _0666)
  } catch (er2) {
    if (er2.code === "ENOENT")
      return
    else
      throw er
  }

  try {
    var stats = options.statSync(p)
  } catch (er3) {
    if (er3.code === "ENOENT")
      return
    else
      throw er
  }

  if (stats.isDirectory())
    rmdirSync(p, options, er)
  else
    options.unlinkSync(p)
}

function rmdir (p, options, originalEr, cb) {
  assert(p)
  assert(options)
  if (originalEr)
    assert(originalEr instanceof Error)
  assert(typeof cb === 'function')

  // try to rmdir first, and only readdir on ENOTEMPTY or EEXIST (SunOS)
  // if we guessed wrong, and it's not a directory, then
  // raise the original error.
  options.rmdir(p, function (er) {
    if (er && (er.code === "ENOTEMPTY" || er.code === "EEXIST" || er.code === "EPERM"))
      rmkids(p, options, cb)
    else if (er && er.code === "ENOTDIR")
      cb(originalEr)
    else
      cb(er)
  })
}

function rmkids(p, options, cb) {
  assert(p)
  assert(options)
  assert(typeof cb === 'function')

  options.readdir(p, function (er, files) {
    if (er)
      return cb(er)
    var n = files.length
    if (n === 0)
      return options.rmdir(p, cb)
    var errState
    files.forEach(function (f) {
      rimraf(path.join(p, f), options, function (er) {
        if (errState)
          return
        if (er)
          return cb(errState = er)
        if (--n === 0)
          options.rmdir(p, cb)
      })
    })
  })
}

// this looks simpler, and is strictly *faster*, but will
// tie up the JavaScript thread and fail on excessively
// deep directory trees.
function rimrafSync (p, options) {
  options = options || {}
  defaults(options)

  assert(p, 'rimraf: missing path')
  assert.equal(typeof p, 'string', 'rimraf: path should be a string')
  assert(options, 'rimraf: missing options')
  assert.equal(typeof options, 'object', 'rimraf: options should be object')

  var results

  if (options.disableGlob || !glob.hasMagic(p)) {
    results = [p]
  } else {
    try {
      options.lstatSync(p)
      results = [p]
    } catch (er) {
      results = glob.sync(p, options.glob)
    }
  }

  if (!results.length)
    return

  for (var i = 0; i < results.length; i++) {
    var p = results[i]

    try {
      var st = options.lstatSync(p)
    } catch (er) {
      if (er.code === "ENOENT")
        return

      // Windows can EPERM on stat.  Life is suffering.
      if (er.code === "EPERM" && isWindows)
        fixWinEPERMSync(p, options, er)
    }

    try {
      // sunos lets the root user unlink directories, which is... weird.
      if (st && st.isDirectory())
        rmdirSync(p, options, null)
      else
        options.unlinkSync(p)
    } catch (er) {
      if (er.code === "ENOENT")
        return
      if (er.code === "EPERM")
        return isWindows ? fixWinEPERMSync(p, options, er) : rmdirSync(p, options, er)
      if (er.code !== "EISDIR")
        throw er

      rmdirSync(p, options, er)
    }
  }
}

function rmdirSync (p, options, originalEr) {
  assert(p)
  assert(options)
  if (originalEr)
    assert(originalEr instanceof Error)

  try {
    options.rmdirSync(p)
  } catch (er) {
    if (er.code === "ENOENT")
      return
    if (er.code === "ENOTDIR")
      throw originalEr
    if (er.code === "ENOTEMPTY" || er.code === "EEXIST" || er.code === "EPERM")
      rmkidsSync(p, options)
  }
}

function rmkidsSync (p, options) {
  assert(p)
  assert(options)
  options.readdirSync(p).forEach(function (f) {
    rimrafSync(path.join(p, f), options)
  })

  // We only end up here once we got ENOTEMPTY at least once, and
  // at this point, we are guaranteed to have removed all the kids.
  // So, we know that it won't be ENOENT or ENOTDIR or anything else.
  // try really hard to delete stuff on windows, because it has a
  // PROFOUNDLY annoying habit of not closing handles promptly when
  // files are deleted, resulting in spurious ENOTEMPTY errors.
  var retries = isWindows ? 100 : 1
  var i = 0
  do {
    var threw = true
    try {
      var ret = options.rmdirSync(p, options)
      threw = false
      return ret
    } finally {
      if (++i < retries && threw)
        continue
    }
  } while (true)
}


1			module.exports = rimraf
2			rimraf.sync = rimrafSync
3
4			var assert = require("assert")
5			var path = require("path")
6			var fs = require("fs")
7			var glob = undefined
8			try {
9			glob = require("glob")
10			} catch (_err) {
11			// treat glob as optional.
12			}
13			var _0666 = parseInt('666', 8)
14
15			var defaultGlobOpts = {
16			nosort: true,
17			silent: true
18			}
19
20			// for EMFILE handling
21			var timeout = 0
22
23			var isWindows = (process.platform === "win32")
24
25			function defaults (options) {
26			var methods = [
27			'unlink',
28			'chmod',
29			'stat',
30			'lstat',
31			'rmdir',
32			'readdir'
33			]
34			methods.forEach(function(m) {
35			options[m] = options[m] \|\| fs[m]
36			m = m + 'Sync'
37			options[m] = options[m] \|\| fs[m]
38			})
39
40			options.maxBusyTries = options.maxBusyTries \|\| 3
41			options.emfileWait = options.emfileWait \|\| 1000
42			if (options.glob === false) {
43			options.disableGlob = true
44			}
45			if (options.disableGlob !== true && glob === undefined) {
46			throw Error('glob dependency not found, set `options.disableGlob = true` if intentional')
47			}
48			options.disableGlob = options.disableGlob \|\| false
49			options.glob = options.glob \|\| defaultGlobOpts
50			}
51
52			function rimraf (p, options, cb) {
53			if (typeof options === 'function') {
54			cb = options
55			options = {}
56			}
57
58			assert(p, 'rimraf: missing path')
59			assert.equal(typeof p, 'string', 'rimraf: path should be a string')
60			assert.equal(typeof cb, 'function', 'rimraf: callback function required')
61			assert(options, 'rimraf: invalid options argument provided')
62			assert.equal(typeof options, 'object', 'rimraf: options should be object')
63
64			defaults(options)
65
66			var busyTries = 0
67			var errState = null
68			var n = 0
69
70			if (options.disableGlob \|\| !glob.hasMagic(p))
71			return afterGlob(null, [p])
72
73			options.lstat(p, function (er, stat) {
74			if (!er)
75			return afterGlob(null, [p])
76
77			glob(p, options.glob, afterGlob)
78			})
79
80			function next (er) {
81			errState = errState \|\| er
82			if (--n === 0)
83			cb(errState)
84			}
85
86			function afterGlob (er, results) {
87			if (er)
88			return cb(er)
89
90			n = results.length
91			if (n === 0)
92			return cb()
93
94			results.forEach(function (p) {
95			rimraf_(p, options, function CB (er) {
96			if (er) {
97			if ((er.code === "EBUSY" \|\| er.code === "ENOTEMPTY" \|\| er.code === "EPERM") &&
98			busyTries < options.maxBusyTries) {
99			busyTries ++
100			var time = busyTries * 100
101			// try again, with the same exact callback as this one.
102			return setTimeout(function () {
103			rimraf_(p, options, CB)
104			}, time)
105			}
106
107			// this one won't happen if graceful-fs is used.
108			if (er.code === "EMFILE" && timeout < options.emfileWait) {
109			return setTimeout(function () {
110			rimraf_(p, options, CB)
111			}, timeout ++)
112			}
113
114			// already gone
115			if (er.code === "ENOENT") er = null
116			}
117
118			timeout = 0
119			next(er)
120			})
121			})
122			}
123			}
124
125			// Two possible strategies.
126			// 1. Assume it's a file. unlink it, then do the dir stuff on EPERM or EISDIR
127			// 2. Assume it's a directory. readdir, then do the file stuff on ENOTDIR
128			//
129			// Both result in an extra syscall when you guess wrong. However, there
130			// are likely far more normal files in the world than directories. This
131			// is based on the assumption that a the average number of files per
132			// directory is >= 1.
133			//
134			// If anyone ever complains about this, then I guess the strategy could
135			// be made configurable somehow. But until then, YAGNI.
136			function rimraf_ (p, options, cb) {
137			assert(p)
138			assert(options)
139			assert(typeof cb === 'function')
140
141			// sunos lets the root user unlink directories, which is... weird.
142			// so we have to lstat here and make sure it's not a dir.
143			options.lstat(p, function (er, st) {
144			if (er && er.code === "ENOENT")
145			return cb(null)
146
147			// Windows can EPERM on stat. Life is suffering.
148			if (er && er.code === "EPERM" && isWindows)
149			fixWinEPERM(p, options, er, cb)
150
151			if (st && st.isDirectory())
152			return rmdir(p, options, er, cb)
153
154			options.unlink(p, function (er) {
155			if (er) {
156			if (er.code === "ENOENT")
157			return cb(null)
158			if (er.code === "EPERM")
159			return (isWindows)
160			? fixWinEPERM(p, options, er, cb)
161			: rmdir(p, options, er, cb)
162			if (er.code === "EISDIR")
163			return rmdir(p, options, er, cb)
164			}
165			return cb(er)
166			})
167			})
168			}
169
170			function fixWinEPERM (p, options, er, cb) {
171			assert(p)
172			assert(options)
173			assert(typeof cb === 'function')
174			if (er)
175			assert(er instanceof Error)
176
177			options.chmod(p, _0666, function (er2) {
178			if (er2)
179			cb(er2.code === "ENOENT" ? null : er)
180			else
181			options.stat(p, function(er3, stats) {
182			if (er3)
183			cb(er3.code === "ENOENT" ? null : er)
184			else if (stats.isDirectory())
185			rmdir(p, options, er, cb)
186			else
187			options.unlink(p, cb)
188			})
189			})
190			}
191
192			function fixWinEPERMSync (p, options, er) {
193			assert(p)
194			assert(options)
195			if (er)
196			assert(er instanceof Error)
197
198			try {
199			options.chmodSync(p, _0666)
200			} catch (er2) {
201			if (er2.code === "ENOENT")
202			return
203			else
204			throw er
205			}
206
207			try {
208			var stats = options.statSync(p)
209			} catch (er3) {
210			if (er3.code === "ENOENT")
211			return
212			else
213			throw er
214			}
215
216			if (stats.isDirectory())
217			rmdirSync(p, options, er)
218			else
219			options.unlinkSync(p)
220			}
221
222			function rmdir (p, options, originalEr, cb) {
223			assert(p)
224			assert(options)
225			if (originalEr)
226			assert(originalEr instanceof Error)
227			assert(typeof cb === 'function')
228
229			// try to rmdir first, and only readdir on ENOTEMPTY or EEXIST (SunOS)
230			// if we guessed wrong, and it's not a directory, then
231			// raise the original error.
232			options.rmdir(p, function (er) {
233			if (er && (er.code === "ENOTEMPTY" \|\| er.code === "EEXIST" \|\| er.code === "EPERM"))
234			rmkids(p, options, cb)
235			else if (er && er.code === "ENOTDIR")
236			cb(originalEr)
237			else
238			cb(er)
239			})
240			}
241
242			function rmkids(p, options, cb) {
243			assert(p)
244			assert(options)
245			assert(typeof cb === 'function')
246
247			options.readdir(p, function (er, files) {
248			if (er)
249			return cb(er)
250			var n = files.length
251			if (n === 0)
252			return options.rmdir(p, cb)
253			var errState
254			files.forEach(function (f) {
255			rimraf(path.join(p, f), options, function (er) {
256			if (errState)
257			return
258			if (er)
259			return cb(errState = er)
260			if (--n === 0)
261			options.rmdir(p, cb)
262			})
263			})
264			})
265			}
266
267			// this looks simpler, and is strictly faster, but will
268			// tie up the JavaScript thread and fail on excessively
269			// deep directory trees.
270			function rimrafSync (p, options) {
271			options = options \|\| {}
272			defaults(options)
273
274			assert(p, 'rimraf: missing path')
275			assert.equal(typeof p, 'string', 'rimraf: path should be a string')
276			assert(options, 'rimraf: missing options')
277			assert.equal(typeof options, 'object', 'rimraf: options should be object')
278
279			var results
280
281			if (options.disableGlob \|\| !glob.hasMagic(p)) {
282			results = [p]
283			} else {
284			try {
285			options.lstatSync(p)
286			results = [p]
287			} catch (er) {
288			results = glob.sync(p, options.glob)
289			}
290			}
291
292			if (!results.length)
293			return
294
295			for (var i = 0; i < results.length; i++) {
296			var p = results[i]
297
298			try {
299			var st = options.lstatSync(p)
300			} catch (er) {
301			if (er.code === "ENOENT")
302			return
303
304			// Windows can EPERM on stat. Life is suffering.
305			if (er.code === "EPERM" && isWindows)
306			fixWinEPERMSync(p, options, er)
307			}
308
309			try {
310			// sunos lets the root user unlink directories, which is... weird.
311			if (st && st.isDirectory())
312			rmdirSync(p, options, null)
313			else
314			options.unlinkSync(p)
315			} catch (er) {
316			if (er.code === "ENOENT")
317			return
318			if (er.code === "EPERM")
319			return isWindows ? fixWinEPERMSync(p, options, er) : rmdirSync(p, options, er)
320			if (er.code !== "EISDIR")
321			throw er
322
323			rmdirSync(p, options, er)
324			}
325			}
326			}
327
328			function rmdirSync (p, options, originalEr) {
329			assert(p)
330			assert(options)
331			if (originalEr)
332			assert(originalEr instanceof Error)
333
334			try {
335			options.rmdirSync(p)
336			} catch (er) {
337			if (er.code === "ENOENT")
338			return
339			if (er.code === "ENOTDIR")
340			throw originalEr
341			if (er.code === "ENOTEMPTY" \|\| er.code === "EEXIST" \|\| er.code === "EPERM")
342			rmkidsSync(p, options)
343			}
344			}
345
346			function rmkidsSync (p, options) {
347			assert(p)
348			assert(options)
349			options.readdirSync(p).forEach(function (f) {
350			rimrafSync(path.join(p, f), options)
351			})
352
353			// We only end up here once we got ENOTEMPTY at least once, and
354			// at this point, we are guaranteed to have removed all the kids.
355			// So, we know that it won't be ENOENT or ENOTDIR or anything else.
356			// try really hard to delete stuff on windows, because it has a
357			// PROFOUNDLY annoying habit of not closing handles promptly when
358			// files are deleted, resulting in spurious ENOTEMPTY errors.
359			var retries = isWindows ? 100 : 1
360			var i = 0
361			do {
362			var threw = true
363			try {
364			var ret = options.rmdirSync(p, options)
365			threw = false
366			return ret
367			} finally {
368			if (++i < retries && threw)
369			continue
370			}
371			} while (true)
372			}
373

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Push — main ( 10dbfc...61a674 )

node_modules/rimraf/rimraf.js F

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