Use slice instead of creating a new buffer

Author: KlausTrainer

index.js

@@ -117,7 +117,6 @@ function deFramer(onFrame) {
             case 1: length |= chunk[i] << 16; state = 2; break;
             case 2: length |= chunk[i] << 8; state = 3; break;
             case 3: length |= chunk[i]; state = 4;
-                buffer = bops.create(length);
                 offset = 0;
                 break;
             case 4:
@@ -127,9 +126,14 @@ function deFramer(onFrame) {
                     emit = true;
                     len = length - offset;
                 }
-                // TODO: optimize for case where a copy isn't needed can a slice can
-                // be used instead?
-                bops.copy(chunk, buffer, offset, i, i + len);
+                if (emit && offset === 0) {
+                  buffer = bops.subarray(chunk, i, i + len);
+                } else if (offset === 0) {
+                  buffer = bops.create(length);
+                  bops.copy(chunk, buffer, 0, i, i + len);
+                } else {
+                  bops.copy(chunk, buffer, offset, i, i + len);
+                }
                 offset += len;
                 i += len - 1;
                 if (emit) {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "snappy-msgpack-stream",
-  "version": "1.0.0",
+  "version": "1.0.4",
   "description": "Streams of framed Snappy-compressed MessagePack messages",
   "main": "index.js",
   "scripts": {
@@ -14,7 +14,7 @@
   },
   "keywords": [
     "snappy",
-    "json",
+    "msgpack",
     "stream",
     "pipe",
     "frame"
@@ -26,6 +26,6 @@
   },
   "repository": {
     "type": "git",
-    "url": "https://github.com/KlausTrainer/snappy-json-stream.git"
+    "url": "https://github.com/KlausTrainer/snappy-msgpack-stream.git"
   }
 }

readme.markdown

@@ -1,6 +1,6 @@
 # snappy-msgpack-stream
 
-[![Build Status](https://travis-ci.org/KlausTrainer/snappy-msgpack-stream.svg?branch=master)](https://travis-ci.org/KlausTrainer/snappy-msgpack-stream)
+[![Build Status](https://travis-ci.org/KlausTrainer/snappy-msgpack-stream.svg?branch=main)](https://travis-ci.org/KlausTrainer/snappy-msgpack-stream)
 
 Streams of framed [Snappy](https://google.github.io/snappy/)-compressed [MessagePack](http://msgpack.org/) messages..