🎨 Optimize transcode

Author: nuintun

lib/spawn.js

@@ -32,6 +32,10 @@ if (!transcode) {
    * @returns {Buffer}
    */
   transcode = function(source, fromEncoding, toEncoding) {
+    // Same encoding
+    if (fromEncoding === toEncoding) return source;
+
+    // Transcode
     return toBuffer(source.toString(fromEncoding), toEncoding);
   };
 }