use close event instead exit

Author: darky

index.js

@@ -21,7 +21,7 @@ module.exports = (...args) => {
   const promise = new Promise((resolve, reject) => {
     child.on('error', reject)
 
-    child.on('exit', code => {
+    child.on('close', code => {
       if (code === 0) {
         resolve(stdout)
       } else {