Replace new Buffer with either Buffer.from or Buffer.alloc

lib/firmata.js

@@ -164,7 +164,7 @@ var SYSEX_RESPONSE = {};
 
 SYSEX_RESPONSE[QUERY_FIRMWARE] = function(board) {
   var length = board.currentBuffer.length - 2;
-  var buffer = new Buffer(Math.round((length - 4) / 2));
+  var buffer = Buffer.alloc(Math.round((length - 4) / 2));
   var byte = 0;
   var offset = 0;
 
@@ -348,7 +348,7 @@ SYSEX_RESPONSE[ONEWIRE_READ_REPLY] = function(board) {
  */
 
 SYSEX_RESPONSE[STRING_DATA] = function(board) {
-  var string = new Buffer(board.currentBuffer.slice(2, -1)).toString("utf8").replace(/\0/g, "");
+  var string = Buffer.from(board.currentBuffer.slice(2, -1)).toString("utf8").replace(/\0/g, "");
   board.emit("string", string);
 };
 
@@ -796,7 +796,7 @@ Board.prototype = Object.create(Emitter.prototype, {
  */
 function writeToTransport(board, data) {
   board.pending++;
-  board.transport.write(new Buffer(data), function() {
+  board.transport.write(Buffer.from(data), function() {
     board.pending--;
   });
 }
@@ -1022,7 +1022,7 @@ Board.prototype.queryPinState = function(pin, callback) {
  */
 
 Board.prototype.sendString = function(string) {
-  var bytes = new Buffer(string + "\0", "utf8");
+  var bytes = Buffer.from(string + "\0", "utf8");
   var data = [];
   data.push(START_SYSEX);
   data.push(STRING_DATA);
@@ -1227,7 +1227,7 @@ Board.prototype.i2cWrite = function(address, registerOrData, inBytes) {
     }
   }
 
-  bytes = new Buffer([registerOrData].concat(inBytes));
+  bytes = Buffer.from([registerOrData].concat(inBytes));
 
   for (var i = 0, length = bytes.length; i < length; i++) {
     data.push(