From fcc8df31aca7e81d633213ca710acbd11bc13bea Mon Sep 17 00:00:00 2001
From: Qingrong Ke <keqingrong@outlook.com>
Date: Sat, 7 Dec 2019 15:25:09 +0800
Subject: [PATCH] Fix variable not defined error

---
 src/promise.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/promise.js b/src/promise.js
index aa1e1c9..c28b5e0 100644
--- a/src/promise.js
+++ b/src/promise.js
@@ -11,7 +11,7 @@ function hasCallback(args) {
 }
 
 function _promisify(func) {
-  if (typeof func !== 'function') return fn
+  if (typeof func !== 'function') return func
   return (args = {}) =>
     new Promise((resolve, reject) => {
       func(
@@ -40,4 +40,4 @@ export function promisifyAll(wx = {}, wxp = {}) {
   })
 }
 
-export const promisify = _promisify
\ No newline at end of file
+export const promisify = _promisify