diff --git a/scripts/build.js b/scripts/build.js
index a6905cf..278773d 100644
--- a/scripts/build.js
+++ b/scripts/build.js
@@ -20,12 +20,13 @@ const inputOptions = {
       exclude: 'node_modules/**', // 只编译我们的源代码
       presets: [[
         '@babel/preset-env', {
-        /**
-         * Do not transpile typeof helper with itself
-         * https://github.com/babel/babel/pull/10788/files
-         */
-        'exclude': ['@babel/plugin-transform-typeof-symbol']
-      }]],
+          /**
+           * Do not transpile typeof helper with itself
+           * https://github.com/babel/babel/pull/10788/files
+           */
+          exclude: ['@babel/plugin-transform-typeof-symbol'],
+        },
+      ]],
     }),
   ],
 };