Replaced deprecated Nan and node functions to fix compilation in node 12 - fixed

.travis.yml

@@ -12,11 +12,6 @@ addons:
 language: node_js
 
 node_js:
-  - "0.10"
-  - "0.12"
-  - "3.2"
-  - "4"
-  - "5"
   - "6"
   - "7"
 

lib/decoder.js

@@ -98,7 +98,7 @@ Decoder.prototype._transform = function (chunk, encoding, done) {
   }
 
   function read () {
-    out = new Buffer(safe_buffer);
+    out = Buffer.alloc(safe_buffer);
     binding.mpg123_read(mh, out, out.length, afterRead);
     // XXX: the `afterRead` function below holds the reference to the "out"
     // buffer while being filled by `mpg123_read()` on the thread pool.

lib/encoder.js

@@ -162,7 +162,7 @@ Encoder.prototype._transform = function (chunk, encoding, done) {
   var num_samples = chunk.length / this.blockAlign;
     // TODO: Use better calculation logic from lame.h here
   var estimated_size = 1.25 * num_samples + 7200;
-  var output = new Buffer(estimated_size);
+  var output = Buffer.alloc(estimated_size);
   debug('encoding %d byte chunk with %d byte output buffer (%d samples)', chunk.length, output.length, num_samples);
 
 
@@ -204,7 +204,7 @@ Encoder.prototype._flush = function (done) {
 
   var self = this;
   var estimated_size = 7200; // value specified in lame.h
-  var output = new Buffer(estimated_size);
+  var output = Buffer.alloc(estimated_size);
 
   if (!this._initCalled) {
     try { this._init(); } catch (e) { return done(e); }