cleanup #559

Author: sindresorhus

lib/fork.js

@@ -10,15 +10,15 @@ var send = require('./send');
 var env = process.env;
 
 // ensure NODE_PATH paths are absolute
-if (process.env.NODE_PATH) {
-	var nodePath = process.env.NODE_PATH
+if (env.NODE_PATH) {
+	env = objectAssign({}, env);
+
+	env.NODE_PATH = env.NODE_PATH
 		.split(path.delimiter)
-		.map(function (p) {
-			return path.resolve(p);
+		.map(function (x) {
+			return path.resolve(x);
 		})
 		.join(path.delimiter);
-
-	env = objectAssign(env, {NODE_PATH: nodePath});
 }
 
 module.exports = function (file, opts) {