buffer: add .from(), .alloc() and .allocUnsafe()

Several changes:

* Soft-Deprecate Buffer() constructors
* Add `Buffer.from()`, `Buffer.alloc()`, and `Buffer.allocUnsafe()`
* Add `--zero-fill-buffers` command line option
* Add byteOffset and length to `new Buffer(arrayBuffer)` constructor
* buffer.fill('') previously had no effect, now zero-fills
* Update the docs

PR-URL: https://github.com/nodejs/node/pull/4682
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/test/parallel/test-zlib-dictionary-fail.js b/test/parallel/test-zlib-dictionary-fail.js
index b4a344ceef..2c8939c68f 100644
--- a/test/parallel/test-zlib-dictionary-fail.js
+++ b/test/parallel/test-zlib-dictionary-fail.js
@@ -12,17 +12,17 @@ var zlib = require('zlib');
   }));
 
   // String "test" encoded with dictionary "dict".
-  stream.write(Buffer([0x78, 0xBB, 0x04, 0x09, 0x01, 0xA5]));
+  stream.write(Buffer.from([0x78, 0xBB, 0x04, 0x09, 0x01, 0xA5]));
 })();
 
 // Should raise an error, not trigger an assertion in src/node_zlib.cc
 (function() {
-  var stream = zlib.createInflate({ dictionary: Buffer('fail') });
+  var stream = zlib.createInflate({ dictionary: Buffer.from('fail') });
 
   stream.on('error', common.mustCall(function(err) {
     assert(/Bad dictionary/.test(err.message));
   }));
 
   // String "test" encoded with dictionary "dict".
-  stream.write(Buffer([0x78, 0xBB, 0x04, 0x09, 0x01, 0xA5]));
+  stream.write(Buffer.from([0x78, 0xBB, 0x04, 0x09, 0x01, 0xA5]));
 })();