Fix compile target version

yeonjuan · yeonjuan · commit a588d471575a · 2022-09-14T20:16:35.000+09:00
diff --git a/tsconfig.json b/tsconfig.json
@@ -1,6 +1,6 @@
 {
   "compilerOptions": {
-    "target": "esnext",
+    "target": "es6",
     "module": "commonjs",
     "strict": true,
     "esModuleInterop": true,
