diff --git a/buffer-stream.js b/buffer-stream.js
index 8188f92..2dd7574 100644
--- a/buffer-stream.js
+++ b/buffer-stream.js
@@ -6,46 +6,47 @@ module.exports = options => {
 
 	const {array} = options;
 	let {encoding} = options;
-	const buffer = encoding === 'buffer';
+	const isBuffer = encoding === 'buffer';
 	let objectMode = false;
 
 	if (array) {
-		objectMode = !(encoding || buffer);
+		objectMode = !(encoding || isBuffer);
 	} else {
 		encoding = encoding || 'utf8';
 	}
 
-	if (buffer) {
+	if (isBuffer) {
 		encoding = null;
 	}
 
-	let len = 0;
-	const ret = [];
 	const stream = new PassThroughStream({objectMode});
 
 	if (encoding) {
 		stream.setEncoding(encoding);
 	}
 
+	let length = 0;
+	const chunks = [];
+
 	stream.on('data', chunk => {
-		ret.push(chunk);
+		chunks.push(chunk);
 
 		if (objectMode) {
-			len = ret.length;
+			length = chunks.length;
 		} else {
-			len += chunk.length;
+			length += chunk.length;
 		}
 	});
 
 	stream.getBufferedValue = () => {
 		if (array) {
-			return ret;
+			return chunks;
 		}
 
-		return buffer ? Buffer.concat(ret, len) : ret.join('');
+		return isBuffer ? Buffer.concat(chunks, length) : chunks.join('');
 	};
 
-	stream.getBufferedLength = () => len;
+	stream.getBufferedLength = () => length;
 
 	return stream;
 };