@stencil/core/dist/sys/node/graceful-fs.js

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/* 0 */
/***/ (function(module, exports, __webpack_require__) {

module.exports = __webpack_require__(1);


/***/ }),
/* 1 */
/***/ (function(module, exports, __webpack_require__) {

var fs = __webpack_require__(2)
var polyfills = __webpack_require__(3)
var legacy = __webpack_require__(5)
var clone = __webpack_require__(7)

var queue = []

var util = __webpack_require__(8)

function noop () {}

var debug = noop
if (util.debuglog)
  debug = util.debuglog('gfs4')
else if (/\bgfs4\b/i.test(process.env.NODE_DEBUG || ''))
  debug = function() {
    var m = util.format.apply(util, arguments)
    m = 'GFS4: ' + m.split(/\n/).join('\nGFS4: ')
    console.error(m)
  }

if (/\bgfs4\b/i.test(process.env.NODE_DEBUG || '')) {
  process.on('exit', function() {
    debug(queue)
    __webpack_require__(9).equal(queue.length, 0)
  })
}

module.exports = patch(clone(fs))
if (process.env.TEST_GRACEFUL_FS_GLOBAL_PATCH && !fs.__patched) {
    module.exports = patch(fs)
    fs.__patched = true;
}

// Always patch fs.close/closeSync, because we want to
// retry() whenever a close happens *anywhere* in the program.
// This is essential when multiple graceful-fs instances are
// in play at the same time.
module.exports.close = (function (fs$close) { return function (fd, cb) {
  return fs$close.call(fs, fd, function (err) {
    if (!err)
      retry()

    if (typeof cb === 'function')
      cb.apply(this, arguments)
  })
}})(fs.close)

module.exports.closeSync = (function (fs$closeSync) { return function (fd) {
  // Note that graceful-fs also retries when fs.closeSync() fails.
  // Looks like a bug to me, although it's probably a harmless one.
  var rval = fs$closeSync.apply(fs, arguments)
  retry()
  return rval
}})(fs.closeSync)

// Only patch fs once, otherwise we'll run into a memory leak if
// graceful-fs is loaded multiple times, such as in test environments that
// reset the loaded modules between tests.
// We look for the string `graceful-fs` from the comment above. This
// way we are not adding any extra properties and it will detect if older
// versions of graceful-fs are installed.
if (!/\bgraceful-fs\b/.test(fs.closeSync.toString())) {
  fs.closeSync = module.exports.closeSync;
  fs.close = module.exports.close;
}

function patch (fs) {
  // Everything that references the open() function needs to be in here
  polyfills(fs)
  fs.gracefulify = patch
  fs.FileReadStream = ReadStream;  // Legacy name.
  fs.FileWriteStream = WriteStream;  // Legacy name.
  fs.createReadStream = createReadStream
  fs.createWriteStream = createWriteStream
  var fs$readFile = fs.readFile
  fs.readFile = readFile
  function readFile (path, options, cb) {
    if (typeof options === 'function')
      cb = options, options = null

    return go$readFile(path, options, cb)

    function go$readFile (path, options, cb) {
      return fs$readFile(path, options, function (err) {
        if (err && (err.code === 'EMFILE' || err.code === 'ENFILE'))
          enqueue([go$readFile, [path, options, cb]])
        else {
          if (typeof cb === 'function')
            cb.apply(this, arguments)
          retry()
        }
      })
    }
  }

  var fs$writeFile = fs.writeFile
  fs.writeFile = writeFile
  function writeFile (path, data, options, cb) {
    if (typeof options === 'function')
      cb = options, options = null

    return go$writeFile(path, data, options, cb)

    function go$writeFile (path, data, options, cb) {
      return fs$writeFile(path, data, options, function (err) {
        if (err && (err.code === 'EMFILE' || err.code === 'ENFILE'))
          enqueue([go$writeFile, [path, data, options, cb]])
        else {
          if (typeof cb === 'function')
            cb.apply(this, arguments)
          retry()
        }
      })
    }
  }

  var fs$appendFile = fs.appendFile
  if (fs$appendFile)
    fs.appendFile = appendFile
  function appendFile (path, data, options, cb) {
    if (typeof options === 'function')
      cb = options, options = null

    return go$appendFile(path, data, options, cb)

    function go$appendFile (path, data, options, cb) {
      return fs$appendFile(path, data, options, function (err) {
        if (err && (err.code === 'EMFILE' || err.code === 'ENFILE'))
          enqueue([go$appendFile, [path, data, options, cb]])
        else {
          if (typeof cb === 'function')
            cb.apply(this, arguments)
          retry()
        }
      })
    }
  }

  var fs$readdir = fs.readdir
  fs.readdir = readdir
  function readdir (path, options, cb) {
    var args = [path]
    if (typeof options !== 'function') {
      args.push(options)
    } else {
      cb = options
    }
    args.push(go$readdir$cb)

    return go$readdir(args)

    function go$readdir$cb (err, files) {
      if (files && files.sort)
        files.sort()

      if (err && (err.code === 'EMFILE' || err.code === 'ENFILE'))
        enqueue([go$readdir, [args]])

      else {
        if (typeof cb === 'function')
          cb.apply(this, arguments)
        retry()
      }
    }
  }

  function go$readdir (args) {
    return fs$readdir.apply(fs, args)
  }

  if (process.version.substr(0, 4) === 'v0.8') {
    var legStreams = legacy(fs)
    ReadStream = legStreams.ReadStream
    WriteStream = legStreams.WriteStream
  }

  var fs$ReadStream = fs.ReadStream
  if (fs$ReadStream) {
    ReadStream.prototype = Object.create(fs$ReadStream.prototype)
    ReadStream.prototype.open = ReadStream$open
  }

  var fs$WriteStream = fs.WriteStream
  if (fs$WriteStream) {
    WriteStream.prototype = Object.create(fs$WriteStream.prototype)
    WriteStream.prototype.open = WriteStream$open
  }

  fs.ReadStream = ReadStream
  fs.WriteStream = WriteStream

  function ReadStream (path, options) {
    if (this instanceof ReadStream)
      return fs$ReadStream.apply(this, arguments), this
    else
      return ReadStream.apply(Object.create(ReadStream.prototype), arguments)
  }

  function ReadStream$open () {
    var that = this
    open(that.path, that.flags, that.mode, function (err, fd) {
      if (err) {
        if (that.autoClose)
          that.destroy()

        that.emit('error', err)
      } else {
        that.fd = fd
        that.emit('open', fd)
        that.read()
      }
    })
  }

  function WriteStream (path, options) {
    if (this instanceof WriteStream)
      return fs$WriteStream.apply(this, arguments), this
    else
      return WriteStream.apply(Object.create(WriteStream.prototype), arguments)
  }

  function WriteStream$open () {
    var that = this
    open(that.path, that.flags, that.mode, function (err, fd) {
      if (err) {
        that.destroy()
        that.emit('error', err)
      } else {
        that.fd = fd
        that.emit('open', fd)
      }
    })
  }

  function createReadStream (path, options) {
    return new ReadStream(path, options)
  }

  function createWriteStream (path, options) {
    return new WriteStream(path, options)
  }

  var fs$open = fs.open
  fs.open = open
  function open (path, flags, mode, cb) {
    if (typeof mode === 'function')
      cb = mode, mode = null

    return go$open(path, flags, mode, cb)

    function go$open (path, flags, mode, cb) {
      return fs$open(path, flags, mode, function (err, fd) {
        if (err && (err.code === 'EMFILE' || err.code === 'ENFILE'))
          enqueue([go$open, [path, flags, mode, cb]])
        else {
          if (typeof cb === 'function')
            cb.apply(this, arguments)
          retry()
        }
      })
    }
  }

  return fs
}

function enqueue (elem) {
  debug('ENQUEUE', elem[0].name, elem[1])
  queue.push(elem)
}

function retry () {
  var elem = queue.shift()
  if (elem) {
    debug('RETRY', elem[0].name, elem[1])
    elem[0].apply(null, elem[1])
  }
}


/***/ }),
/* 2 */
/***/ (function(module, exports) {

module.exports = require("fs");

/***/ }),
/* 3 */
/***/ (function(module, exports, __webpack_require__) {

var constants = __webpack_require__(4)

var origCwd = process.cwd
var cwd = null

var platform = process.env.GRACEFUL_FS_PLATFORM || process.platform

process.cwd = function() {
  if (!cwd)
    cwd = origCwd.call(process)
  return cwd
}
try {
  process.cwd()
} catch (er) {}

var chdir = process.chdir
process.chdir = function(d) {
  cwd = null
  chdir.call(process, d)
}

module.exports = patch

function patch (fs) {
  // (re-)implement some things that are known busted or missing.

  // lchmod, broken prior to 0.6.2
  // back-port the fix here.
  if (constants.hasOwnProperty('O_SYMLINK') &&
      process.version.match(/^v0\.6\.[0-2]|^v0\.5\./)) {
    patchLchmod(fs)
  }

  // lutimes implementation, or no-op
  if (!fs.lutimes) {
    patchLutimes(fs)
  }

  // https://github.com/isaacs/node-graceful-fs/issues/4
  // Chown should not fail on einval or eperm if non-root.
  // It should not fail on enosys ever, as this just indicates
  // that a fs doesn't support the intended operation.

  fs.chown = chownFix(fs.chown)
  fs.fchown = chownFix(fs.fchown)
  fs.lchown = chownFix(fs.lchown)

  fs.chmod = chmodFix(fs.chmod)
  fs.fchmod = chmodFix(fs.fchmod)
  fs.lchmod = chmodFix(fs.lchmod)

  fs.chownSync = chownFixSync(fs.chownSync)
  fs.fchownSync = chownFixSync(fs.fchownSync)
  fs.lchownSync = chownFixSync(fs.lchownSync)

  fs.chmodSync = chmodFixSync(fs.chmodSync)
  fs.fchmodSync = chmodFixSync(fs.fchmodSync)
  fs.lchmodSync = chmodFixSync(fs.lchmodSync)

  fs.stat = statFix(fs.stat)
  fs.fstat = statFix(fs.fstat)
  fs.lstat = statFix(fs.lstat)

  fs.statSync = statFixSync(fs.statSync)
  fs.fstatSync = statFixSync(fs.fstatSync)
  fs.lstatSync = statFixSync(fs.lstatSync)

  // if lchmod/lchown do not exist, then make them no-ops
  if (!fs.lchmod) {
    fs.lchmod = function (path, mode, cb) {
      if (cb) process.nextTick(cb)
    }
    fs.lchmodSync = function () {}
  }
  if (!fs.lchown) {
    fs.lchown = function (path, uid, gid, cb) {
      if (cb) process.nextTick(cb)
    }
    fs.lchownSync = function () {}
  }

  // on Windows, A/V software can lock the directory, causing this
  // to fail with an EACCES or EPERM if the directory contains newly
  // created files.  Try again on failure, for up to 60 seconds.

  // Set the timeout this long because some Windows Anti-Virus, such as Parity
  // bit9, may lock files for up to a minute, causing npm package install
  // failures. Also, take care to yield the scheduler. Windows scheduling gives
  // CPU to a busy looping process, which can cause the program causing the lock
  // contention to be starved of CPU by node, so the contention doesn't resolve.
  if (platform === "win32") {
    fs.rename = (function (fs$rename) { return function (from, to, cb) {
      var start = Date.now()
      var backoff = 0;
      fs$rename(from, to, function CB (er) {
        if (er
            && (er.code === "EACCES" || er.code === "EPERM")
            && Date.now() - start < 60000) {
          setTimeout(function() {
            fs.stat(to, function (stater, st) {
              if (stater && stater.code === "ENOENT")
                fs$rename(from, to, CB);
              else
                cb(er)
            })
          }, backoff)
          if (backoff < 100)
            backoff += 10;
          return;
        }
        if (cb) cb(er)
      })
    }})(fs.rename)
  }

  // if read() returns EAGAIN, then just try it again.
  fs.read = (function (fs$read) { return function (fd, buffer, offset, length, position, callback_) {
    var callback
    if (callback_ && typeof callback_ === 'function') {
      var eagCounter = 0
      callback = function (er, _, __) {
        if (er && er.code === 'EAGAIN' && eagCounter < 10) {
          eagCounter ++
          return fs$read.call(fs, fd, buffer, offset, length, position, callback)
        }
        callback_.apply(this, arguments)
      }
    }
    return fs$read.call(fs, fd, buffer, offset, length, position, callback)
  }})(fs.read)

  fs.readSync = (function (fs$readSync) { return function (fd, buffer, offset, length, position) {
    var eagCounter = 0
    while (true) {
      try {
        return fs$readSync.call(fs, fd, buffer, offset, length, position)
      } catch (er) {
        if (er.code === 'EAGAIN' && eagCounter < 10) {
          eagCounter ++
          continue
        }
        throw er
      }
    }
  }})(fs.readSync)

  function patchLchmod (fs) {
    fs.lchmod = function (path, mode, callback) {
      fs.open( path
             , constants.O_WRONLY | constants.O_SYMLINK
             , mode
             , function (err, fd) {
        if (err) {
          if (callback) callback(err)
          return
        }
        // prefer to return the chmod error, if one occurs,
        // but still try to close, and report closing errors if they occur.
        fs.fchmod(fd, mode, function (err) {
          fs.close(fd, function(err2) {
            if (callback) callback(err || err2)
          })
        })
      })
    }

    fs.lchmodSync = function (path, mode) {
      var fd = fs.openSync(path, constants.O_WRONLY | constants.O_SYMLINK, mode)

      // prefer to return the chmod error, if one occurs,
      // but still try to close, and report closing errors if they occur.
      var threw = true
      var ret
      try {
        ret = fs.fchmodSync(fd, mode)
        threw = false
      } finally {
        if (threw) {
          try {
            fs.closeSync(fd)
          } catch (er) {}
        } else {
          fs.closeSync(fd)
        }
      }
      return ret
    }
  }

  function patchLutimes (fs) {
    if (constants.hasOwnProperty("O_SYMLINK")) {
      fs.lutimes = function (path, at, mt, cb) {
        fs.open(path, constants.O_SYMLINK, function (er, fd) {
          if (er) {
            if (cb) cb(er)
            return
          }
          fs.futimes(fd, at, mt, function (er) {
            fs.close(fd, function (er2) {
              if (cb) cb(er || er2)
            })
          })
        })
      }

      fs.lutimesSync = function (path, at, mt) {
        var fd = fs.openSync(path, constants.O_SYMLINK)
        var ret
        var threw = true
        try {
          ret = fs.futimesSync(fd, at, mt)
          threw = false
        } finally {
          if (threw) {
            try {
              fs.closeSync(fd)
            } catch (er) {}
          } else {
            fs.closeSync(fd)
          }
        }
        return ret
      }

    } else {
      fs.lutimes = function (_a, _b, _c, cb) { if (cb) process.nextTick(cb) }
      fs.lutimesSync = function () {}
    }
  }

  function chmodFix (orig) {
    if (!orig) return orig
    return function (target, mode, cb) {
      return orig.call(fs, target, mode, function (er) {
        if (chownErOk(er)) er = null
        if (cb) cb.apply(this, arguments)
      })
    }
  }

  function chmodFixSync (orig) {
    if (!orig) return orig
    return function (target, mode) {
      try {
        return orig.call(fs, target, mode)
      } catch (er) {
        if (!chownErOk(er)) throw er
      }
    }
  }


  function chownFix (orig) {
    if (!orig) return orig
    return function (target, uid, gid, cb) {
      return orig.call(fs, target, uid, gid, function (er) {
        if (chownErOk(er)) er = null
        if (cb) cb.apply(this, arguments)
      })
    }
  }

  function chownFixSync (orig) {
    if (!orig) return orig
    return function (target, uid, gid) {
      try {
        return orig.call(fs, target, uid, gid)
      } catch (er) {
        if (!chownErOk(er)) throw er
      }
    }
  }

  function statFix (orig) {
    if (!orig) return orig
    // Older versions of Node erroneously returned signed integers for
    // uid + gid.
    return function (target, options, cb) {
      if (typeof options === 'function') {
        cb = options
        options = null
      }
      function callback (er, stats) {
        if (stats) {
          if (stats.uid < 0) stats.uid += 0x100000000
          if (stats.gid < 0) stats.gid += 0x100000000
        }
        if (cb) cb.apply(this, arguments)
      }
      return options ? orig.call(fs, target, options, callback)
        : orig.call(fs, target, callback)
    }
  }

  function statFixSync (orig) {
    if (!orig) return orig
    // Older versions of Node erroneously returned signed integers for
    // uid + gid.
    return function (target, options) {
      var stats = options ? orig.call(fs, target, options)
        : orig.call(fs, target)
      if (stats.uid < 0) stats.uid += 0x100000000
      if (stats.gid < 0) stats.gid += 0x100000000
      return stats;
    }
  }

  // ENOSYS means that the fs doesn't support the op. Just ignore
  // that, because it doesn't matter.
  //
  // if there's no getuid, or if getuid() is something other
  // than 0, and the error is EINVAL or EPERM, then just ignore
  // it.
  //
  // This specific case is a silent failure in cp, install, tar,
  // and most other unix tools that manage permissions.
  //
  // When running as root, or if other types of errors are
  // encountered, then it's strict.
  function chownErOk (er) {
    if (!er)
      return true

    if (er.code === "ENOSYS")
      return true

    var nonroot = !process.getuid || process.getuid() !== 0
    if (nonroot) {
      if (er.code === "EINVAL" || er.code === "EPERM")
        return true
    }

    return false
  }
}


/***/ }),
/* 4 */
/***/ (function(module, exports) {

module.exports = require("constants");

/***/ }),
/* 5 */
/***/ (function(module, exports, __webpack_require__) {

var Stream = __webpack_require__(6).Stream

module.exports = legacy

function legacy (fs) {
  return {
    ReadStream: ReadStream,
    WriteStream: WriteStream
  }

  function ReadStream (path, options) {
    if (!(this instanceof ReadStream)) return new ReadStream(path, options);

    Stream.call(this);

    var self = this;

    this.path = path;
    this.fd = null;
    this.readable = true;
    this.paused = false;

    this.flags = 'r';
    this.mode = 438; /*=0666*/
    this.bufferSize = 64 * 1024;

    options = options || {};

    // Mixin options into this
    var keys = Object.keys(options);
    for (var index = 0, length = keys.length; index < length; index++) {
      var key = keys[index];
      this[key] = options[key];
    }

    if (this.encoding) this.setEncoding(this.encoding);

    if (this.start !== undefined) {
      if ('number' !== typeof this.start) {
        throw TypeError('start must be a Number');
      }
      if (this.end === undefined) {
        this.end = Infinity;
      } else if ('number' !== typeof this.end) {
        throw TypeError('end must be a Number');
      }

      if (this.start > this.end) {
        throw new Error('start must be <= end');
      }

      this.pos = this.start;
    }

    if (this.fd !== null) {
      process.nextTick(function() {
        self._read();
      });
      return;
    }

    fs.open(this.path, this.flags, this.mode, function (err, fd) {
      if (err) {
        self.emit('error', err);
        self.readable = false;
        return;
      }

      self.fd = fd;
      self.emit('open', fd);
      self._read();
    })
  }

  function WriteStream (path, options) {
    if (!(this instanceof WriteStream)) return new WriteStream(path, options);

    Stream.call(this);

    this.path = path;
    this.fd = null;
    this.writable = true;

    this.flags = 'w';
    this.encoding = 'binary';
    this.mode = 438; /*=0666*/
    this.bytesWritten = 0;

    options = options || {};

    // Mixin options into this
    var keys = Object.keys(options);
    for (var index = 0, length = keys.length; index < length; index++) {
      var key = keys[index];
      this[key] = options[key];
    }

    if (this.start !== undefined) {
      if ('number' !== typeof this.start) {
        throw TypeError('start must be a Number');
      }
      if (this.start < 0) {
        throw new Error('start must be >= zero');
      }

      this.pos = this.start;
    }

    this.busy = false;
    this._queue = [];

    if (this.fd === null) {
      this._open = fs.open;
      this._queue.push([this._open, this.path, this.flags, this.mode, undefined]);
      this.flush();
    }
  }
}


/***/ }),
/* 6 */
/***/ (function(module, exports) {

module.exports = require("stream");

/***/ }),
/* 7 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


module.exports = clone

function clone (obj) {
  if (obj === null || typeof obj !== 'object')
    return obj

  if (obj instanceof Object)
    var copy = { __proto__: obj.__proto__ }
  else
    var copy = Object.create(null)

  Object.getOwnPropertyNames(obj).forEach(function (key) {
    Object.defineProperty(copy, key, Object.getOwnPropertyDescriptor(obj, key))
  })

  return copy
}


/***/ }),
/* 8 */
/***/ (function(module, exports) {

module.exports = require("util");

/***/ }),
/* 9 */
/***/ (function(module, exports) {

module.exports = require("assert");

/***/ })
/******/ ])));