优化异步进程对异常的捕获

src/tools/exec.js

@@ -5,6 +5,11 @@ const execute = cmd => new Promise((resolve, reject) => {
       resolve()
     } else reject(err || stderr)
   })
+  pid.on('close', (code, err) => {
+    if (code == 0 && !err) {
+      resolve()
+    } else reject()
+  })
   pid.stdout.on('data', data => {
     console.log(data)
   })