upgrade dependencies

1 files changed, 390 insertions, 194 deletions

diff --git a/node_modules/browserify-zlib/src/binding.js b/node_modules/browserify-zlib/src/binding.js
index 7244b4384..14e419d2e 100644
--- a/node_modules/browserify-zlib/src/binding.js
+++ b/node_modules/browserify-zlib/src/binding.js
@@ -1,236 +1,432 @@
-var msg = require('pako/lib/zlib/messages');
-var zstream = require('pako/lib/zlib/zstream');
-var zlib_deflate = require('pako/lib/zlib/deflate.js');
-var zlib_inflate = require('pako/lib/zlib/inflate.js');
-var constants = require('pako/lib/zlib/constants');
+'use strict'
+/* eslint camelcase: "off" */
+
+var assert = require('assert')
+
+var Zstream = require('pako/lib/zlib/zstream')
+var zlib_deflate = require('pako/lib/zlib/deflate.js')
+var zlib_inflate = require('pako/lib/zlib/inflate.js')
+var constants = require('pako/lib/zlib/constants')
 
 for (var key in constants) {
-  exports[key] = constants[key];
+  exports[key] = constants[key]
 }
 
 // zlib modes
-exports.NONE = 0;
-exports.DEFLATE = 1;
-exports.INFLATE = 2;
-exports.GZIP = 3;
-exports.GUNZIP = 4;
-exports.DEFLATERAW = 5;
-exports.INFLATERAW = 6;
-exports.UNZIP = 7;
+exports.NONE = 0
+exports.DEFLATE = 1
+exports.INFLATE = 2
+exports.GZIP = 3
+exports.GUNZIP = 4
+exports.DEFLATERAW = 5
+exports.INFLATERAW = 6
+exports.UNZIP = 7
+
+var GZIP_HEADER_ID1 = 0x1f
+var GZIP_HEADER_ID2 = 0x8b
 
 /**
  * Emulate Node's zlib C++ layer for use by the JS layer in index.js
  */
-function Zlib(mode) {
-  if (mode < exports.DEFLATE || mode > exports.UNZIP)
-    throw new TypeError("Bad argument");
-    
-  this.mode = mode;
-  this.init_done = false;
-  this.write_in_progress = false;
-  this.pending_close = false;
-  this.windowBits = 0;
-  this.level = 0;
-  this.memLevel = 0;
-  this.strategy = 0;
-  this.dictionary = null;
-}
-
-Zlib.prototype.init = function(windowBits, level, memLevel, strategy, dictionary) {
-  this.windowBits = windowBits;
-  this.level = level;
-  this.memLevel = memLevel;
-  this.strategy = strategy;
-  // dictionary not supported.
-  
-  if (this.mode === exports.GZIP || this.mode === exports.GUNZIP)
-    this.windowBits += 16;
-    
-  if (this.mode === exports.UNZIP)
-    this.windowBits += 32;
-    
-  if (this.mode === exports.DEFLATERAW || this.mode === exports.INFLATERAW)
-    this.windowBits = -this.windowBits;
-    
-  this.strm = new zstream();
-  
+function Zlib (mode) {
+  if (typeof mode !== 'number' || mode < exports.DEFLATE || mode > exports.UNZIP) {
+    throw new TypeError('Bad argument')
+  }
+
+  this.dictionary = null
+  this.err = 0
+  this.flush = 0
+  this.init_done = false
+  this.level = 0
+  this.memLevel = 0
+  this.mode = mode
+  this.strategy = 0
+  this.windowBits = 0
+  this.write_in_progress = false
+  this.pending_close = false
+  this.gzip_id_bytes_read = 0
+}
+
+Zlib.prototype.close = function () {
+  if (this.write_in_progress) {
+    this.pending_close = true
+    return
+  }
+
+  this.pending_close = false
+
+  assert(this.init_done, 'close before init')
+  assert(this.mode <= exports.UNZIP)
+
+  if (this.mode === exports.DEFLATE || this.mode === exports.GZIP || this.mode === exports.DEFLATERAW) {
+    zlib_deflate.deflateEnd(this.strm)
+  } else if (this.mode === exports.INFLATE || this.mode === exports.GUNZIP ||
+      this.mode === exports.INFLATERAW || this.mode === exports.UNZIP) {
+    zlib_inflate.inflateEnd(this.strm)
+  }
+
+  this.mode = exports.NONE
+
+  this.dictionary = null
+}
+
+Zlib.prototype.write = function (flush, input, in_off, in_len, out, out_off, out_len) {
+  return this._write(true, flush, input, in_off, in_len, out, out_off, out_len)
+}
+
+Zlib.prototype.writeSync = function (flush, input, in_off, in_len, out, out_off, out_len) {
+  return this._write(false, flush, input, in_off, in_len, out, out_off, out_len)
+}
+
+Zlib.prototype._write = function (async, flush, input, in_off, in_len, out, out_off, out_len) {
+  assert.equal(arguments.length, 8)
+
+  assert(this.init_done, 'write before init')
+  assert(this.mode !== exports.NONE, 'already finalized')
+  assert.equal(false, this.write_in_progress, 'write already in progress')
+  assert.equal(false, this.pending_close, 'close is pending')
+
+  this.write_in_progress = true
+
+  assert.equal(false, flush === undefined, 'must provide flush value')
+
+  this.write_in_progress = true
+
+  if (flush !== exports.Z_NO_FLUSH &&
+    flush !== exports.Z_PARTIAL_FLUSH &&
+    flush !== exports.Z_SYNC_FLUSH &&
+    flush !== exports.Z_FULL_FLUSH &&
+    flush !== exports.Z_FINISH &&
+    flush !== exports.Z_BLOCK) {
+    throw new Error('Invalid flush value')
+  }
+
+  if (input == null) {
+    input = Buffer.alloc(0)
+    in_len = 0
+    in_off = 0
+  }
+
+  this.strm.avail_in = in_len
+  this.strm.input = input
+  this.strm.next_in = in_off
+  this.strm.avail_out = out_len
+  this.strm.output = out
+  this.strm.next_out = out_off
+  this.flush = flush
+
+  if (!async) {
+    // sync version
+    this._process()
+
+    if (this._checkError()) {
+      return this._afterSync()
+    }
+    return
+  }
+
+  // async version
+  var self = this
+  process.nextTick(function () {
+    self._process()
+    self._after()
+  })
+
+  return this
+}
+
+Zlib.prototype._afterSync = function () {
+  var avail_out = this.strm.avail_out
+  var avail_in = this.strm.avail_in
+
+  this.write_in_progress = false
+
+  return [avail_in, avail_out]
+}
+
+Zlib.prototype._process = function () {
+  var next_expected_header_byte = null
+
+  // If the avail_out is left at 0, then it means that it ran out
+  // of room.  If there was avail_out left over, then it means
+  // that all of the input was consumed.
   switch (this.mode) {
     case exports.DEFLATE:
     case exports.GZIP:
     case exports.DEFLATERAW:
-      var status = zlib_deflate.deflateInit2(
+      this.err = zlib_deflate.deflate(this.strm, this.flush)
+      break
+    case exports.UNZIP:
+      if (this.strm.avail_in > 0) {
+        next_expected_header_byte = this.strm.next_in
+      }
+
+      switch (this.gzip_id_bytes_read) {
+        case 0:
+          if (next_expected_header_byte === null) {
+            break
+          }
+
+          if (this.strm.input[next_expected_header_byte] === GZIP_HEADER_ID1) {
+            this.gzip_id_bytes_read = 1
+            next_expected_header_byte++
+
+            if (this.strm.avail_in === 1) {
+              // The only available byte was already read.
+              break
+            }
+          } else {
+            this.mode = exports.INFLATE
+            break
+          }
+
+          // fallthrough
+        case 1:
+          if (next_expected_header_byte === null) {
+            break
+          }
+
+          if (this.strm.input[next_expected_header_byte] === GZIP_HEADER_ID2) {
+            this.gzip_id_bytes_read = 2
+            this.mode = exports.GUNZIP
+          } else {
+            // There is no actual difference between INFLATE and INFLATERAW
+            // (after initialization).
+            this.mode = exports.INFLATE
+          }
+
+          break
+        default:
+          throw new Error('invalid number of gzip magic number bytes read')
+      }
+
+      // fallthrough
+    case exports.INFLATE:
+    case exports.GUNZIP:
+    case exports.INFLATERAW:
+      this.err = zlib_inflate.inflate(this.strm, this.flush)
+
+      // If data was encoded with dictionary
+      if (this.err === exports.Z_NEED_DICT && this.dictionary) {
+        // Load it
+        this.err = zlib_inflate.inflateSetDictionary(this.strm, this.dictionary)
+        if (this.err === exports.Z_OK) {
+          // And try to decode again
+          this.err = zlib_inflate.inflate(this.strm, this.flush)
+        } else if (this.err === exports.Z_DATA_ERROR) {
+          // Both inflateSetDictionary() and inflate() return Z_DATA_ERROR.
+          // Make it possible for After() to tell a bad dictionary from bad
+          // input.
+          this.err = exports.Z_NEED_DICT
+        }
+      }
+      while (this.strm.avail_in > 0 &&
+             this.mode === exports.GUNZIP &&
+             this.err === exports.Z_STREAM_END &&
+             this.strm.next_in[0] !== 0x00) {
+        // Bytes remain in input buffer. Perhaps this is another compressed
+        // member in the same archive, or just trailing garbage.
+        // Trailing zero bytes are okay, though, since they are frequently
+        // used for padding.
+
+        this.reset()
+        this.err = zlib_inflate.inflate(this.strm, this.flush)
+      }
+      break
+    default:
+      throw new Error('Unknown mode ' + this.mode)
+  }
+}
+
+Zlib.prototype._checkError = function () {
+  // Acceptable error states depend on the type of zlib stream.
+  switch (this.err) {
+    case exports.Z_OK:
+    case exports.Z_BUF_ERROR:
+      if (this.strm.avail_out !== 0 && this.flush === exports.Z_FINISH) {
+        this._error('unexpected end of file')
+        return false
+      }
+      break
+    case exports.Z_STREAM_END:
+      // normal statuses, not fatal
+      break
+    case exports.Z_NEED_DICT:
+      if (this.dictionary == null) {
+        this._error('Missing dictionary')
+      } else {
+        this._error('Bad dictionary')
+      }
+      return false
+    default:
+      // something else.
+      this._error('Zlib error')
+      return false
+  }
+
+  return true
+}
+
+Zlib.prototype._after = function () {
+  if (!this._checkError()) {
+    return
+  }
+
+  var avail_out = this.strm.avail_out
+  var avail_in = this.strm.avail_in
+
+  this.write_in_progress = false
+
+  // call the write() cb
+  this.callback(avail_in, avail_out)
+
+  if (this.pending_close) {
+    this.close()
+  }
+}
+
+Zlib.prototype._error = function (message) {
+  if (this.strm.msg) {
+    message = this.strm.msg
+  }
+  this.onerror(message, this.err)
+
+  // no hope of rescue.
+  this.write_in_progress = false
+  if (this.pending_close) {
+    this.close()
+  }
+}
+
+Zlib.prototype.init = function (windowBits, level, memLevel, strategy, dictionary) {
+  assert(arguments.length === 4 || arguments.length === 5, 'init(windowBits, level, memLevel, strategy, [dictionary])')
+
+  assert(windowBits >= 8 && windowBits <= 15, 'invalid windowBits')
+  assert(level >= -1 && level <= 9, 'invalid compression level')
+
+  assert(memLevel >= 1 && memLevel <= 9, 'invalid memlevel')
+
+  assert(strategy === exports.Z_FILTERED ||
+         strategy === exports.Z_HUFFMAN_ONLY ||
+         strategy === exports.Z_RLE ||
+         strategy === exports.Z_FIXED ||
+         strategy === exports.Z_DEFAULT_STRATEGY, 'invalid strategy')
+
+  this._init(level, windowBits, memLevel, strategy, dictionary)
+  this._setDictionary()
+}
+
+Zlib.prototype.params = function () {
+  throw new Error('deflateParams Not supported')
+}
+
+Zlib.prototype.reset = function () {
+  this._reset()
+  this._setDictionary()
+}
+
+Zlib.prototype._init = function (level, windowBits, memLevel, strategy, dictionary) {
+  this.level = level
+  this.windowBits = windowBits
+  this.memLevel = memLevel
+  this.strategy = strategy
+
+  this.flush = exports.Z_NO_FLUSH
+
+  this.err = exports.Z_OK
+
+  if (this.mode === exports.GZIP || this.mode === exports.GUNZIP) {
+    this.windowBits += 16
+  }
+
+  if (this.mode === exports.UNZIP) {
+    this.windowBits += 32
+  }
+
+  if (this.mode === exports.DEFLATERAW || this.mode === exports.INFLATERAW) {
+    this.windowBits = -1 * this.windowBits
+  }
+
+  this.strm = new Zstream()
+
+  switch (this.mode) {
+    case exports.DEFLATE:
+    case exports.GZIP:
+    case exports.DEFLATERAW:
+      this.err = zlib_deflate.deflateInit2(
         this.strm,
         this.level,
         exports.Z_DEFLATED,
         this.windowBits,
         this.memLevel,
         this.strategy
-      );
-      break;
+      )
+      break
     case exports.INFLATE:
     case exports.GUNZIP:
     case exports.INFLATERAW:
     case exports.UNZIP:
-      var status  = zlib_inflate.inflateInit2(
+      this.err = zlib_inflate.inflateInit2(
         this.strm,
         this.windowBits
-      );
-      break;
+      )
+      break
     default:
-      throw new Error("Unknown mode " + this.mode);
-  }
-  
-  if (status !== exports.Z_OK) {
-    this._error(status);
-    return;
-  }
-  
-  this.write_in_progress = false;
-  this.init_done = true;
-};
-
-Zlib.prototype.params = function() {
-  throw new Error("deflateParams Not supported");
-};
-
-Zlib.prototype._writeCheck = function() {
-  if (!this.init_done)
-    throw new Error("write before init");
-    
-  if (this.mode === exports.NONE)
-    throw new Error("already finalized");
-    
-  if (this.write_in_progress)
-    throw new Error("write already in progress");
-    
-  if (this.pending_close)
-    throw new Error("close is pending");
-};
-
-Zlib.prototype.write = function(flush, input, in_off, in_len, out, out_off, out_len) {    
-  this._writeCheck();
-  this.write_in_progress = true;
-  
-  var self = this;
-  process.nextTick(function() {
-    self.write_in_progress = false;
-    var res = self._write(flush, input, in_off, in_len, out, out_off, out_len);
-    self.callback(res[0], res[1]);
-    
-    if (self.pending_close)
-      self.close();
-  });
-  
-  return this;
-};
-
-// set method for Node buffers, used by pako
-function bufferSet(data, offset) {
-  for (var i = 0; i < data.length; i++) {
-    this[offset + i] = data[i];
-  }
-}
-
-Zlib.prototype.writeSync = function(flush, input, in_off, in_len, out, out_off, out_len) {
-  this._writeCheck();
-  return this._write(flush, input, in_off, in_len, out, out_off, out_len);
-};
-
-Zlib.prototype._write = function(flush, input, in_off, in_len, out, out_off, out_len) {
-  this.write_in_progress = true;
-  
-  if (flush !== exports.Z_NO_FLUSH &&
-      flush !== exports.Z_PARTIAL_FLUSH &&
-      flush !== exports.Z_SYNC_FLUSH &&
-      flush !== exports.Z_FULL_FLUSH &&
-      flush !== exports.Z_FINISH &&
-      flush !== exports.Z_BLOCK) {
-    throw new Error("Invalid flush value");
-  }
-  
-  if (input == null) {
-    input = new Buffer(0);
-    in_len = 0;
-    in_off = 0;
-  }
-  
-  if (out._set)
-    out.set = out._set;
-  else
-    out.set = bufferSet;
-  
-  var strm = this.strm;
-  strm.avail_in = in_len;
-  strm.input = input;
-  strm.next_in = in_off;
-  strm.avail_out = out_len;
-  strm.output = out;
-  strm.next_out = out_off;
-  
+      throw new Error('Unknown mode ' + this.mode)
+  }
+
+  if (this.err !== exports.Z_OK) {
+    this._error('Init error')
+  }
+
+  this.dictionary = dictionary
+
+  this.write_in_progress = false
+  this.init_done = true
+}
+
+Zlib.prototype._setDictionary = function () {
+  if (this.dictionary == null) {
+    return
+  }
+
+  this.err = exports.Z_OK
+
   switch (this.mode) {
     case exports.DEFLATE:
-    case exports.GZIP:
     case exports.DEFLATERAW:
-      var status = zlib_deflate.deflate(strm, flush);
-      break;
-    case exports.UNZIP:
-    case exports.INFLATE:
-    case exports.GUNZIP:
-    case exports.INFLATERAW:
-      var status = zlib_inflate.inflate(strm, flush);
-      break;
+      this.err = zlib_deflate.deflateSetDictionary(this.strm, this.dictionary)
+      break
     default:
-      throw new Error("Unknown mode " + this.mode);
+      break
   }
-  
-  if (status !== exports.Z_STREAM_END && status !== exports.Z_OK) {
-    this._error(status);
-  }
-  
-  this.write_in_progress = false;
-  return [strm.avail_in, strm.avail_out];
-};
 
-Zlib.prototype.close = function() {
-  if (this.write_in_progress) {
-    this.pending_close = true;
-    return;
-  }
-  
-  this.pending_close = false;
-  
-  if (this.mode === exports.DEFLATE || this.mode === exports.GZIP || this.mode === exports.DEFLATERAW) {
-    zlib_deflate.deflateEnd(this.strm);
-  } else {
-    zlib_inflate.inflateEnd(this.strm);
+  if (this.err !== exports.Z_OK) {
+    this._error('Failed to set dictionary')
   }
-  
-  this.mode = exports.NONE;
-};
+}
+
+Zlib.prototype._reset = function () {
+  this.err = exports.Z_OK
 
-Zlib.prototype.reset = function() {
   switch (this.mode) {
     case exports.DEFLATE:
     case exports.DEFLATERAW:
-      var status = zlib_deflate.deflateReset(this.strm);
-      break;
+    case exports.GZIP:
+      this.err = zlib_deflate.deflateReset(this.strm)
+      break
     case exports.INFLATE:
     case exports.INFLATERAW:
-      var status = zlib_inflate.inflateReset(this.strm);
-      break;
-  }
-  
-  if (status !== exports.Z_OK) {
-    this._error(status);
+    case exports.GUNZIP:
+      this.err = zlib_inflate.inflateReset(this.strm)
+      break
+    default:
+      break
   }
-};
 
-Zlib.prototype._error = function(status) {
-  this.onerror(msg[status] + ': ' + this.strm.msg, status);
-  
-  this.write_in_progress = false;
-  if (this.pending_close)
-    this.close();
-};
+  if (this.err !== exports.Z_OK) {
+    this._error('Failed to reset stream')
+  }
+}
 
-exports.Zlib = Zlib;
+exports.Zlib = Zlib