diff --git a/dist/axios.js b/dist/axios.js
index 3376670..0f335a3 100644
--- a/dist/axios.js
+++ b/dist/axios.js
@@ -8,10 +8,10 @@
   function _typeof(obj) {
     "@babel/helpers - typeof";
 
-    return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) {
+    return _typeof = "function" === typeof Symbol && "symbol" === typeof Symbol.iterator ? function (obj) {
       return typeof obj;
     } : function (obj) {
-      return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
+      return obj && "function" === typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
     }, _typeof(obj);
   }
   function _classCallCheck(instance, Constructor) {
diff --git a/dist/node/axios.cjs b/dist/node/axios.cjs
index adce59e..fbd7868 100644
--- a/dist/node/axios.cjs
+++ b/dist/node/axios.cjs
@@ -3027,7 +3027,7 @@ const httpAdapter = isHttpAdapterSupported && function httpAdapter(config) {
       // This is forcing a int timeout to avoid problems if the `req` interface doesn't handle other types.
       const timeout = parseInt(config.timeout, 10);
 
-      if (isNaN(timeout)) {
+      if (Number.isNaN(timeout)) {
         reject(new AxiosError(
           'error trying to parse `config.timeout` to int',
           AxiosError.ERR_BAD_OPTION_VALUE,
diff --git a/lib/adapters/http.js b/lib/adapters/http.js
index fc478c4..888b78d 100755
--- a/lib/adapters/http.js
+++ b/lib/adapters/http.js
@@ -604,7 +604,7 @@ export default isHttpAdapterSupported && function httpAdapter(config) {
       // This is forcing a int timeout to avoid problems if the `req` interface doesn't handle other types.
       const timeout = parseInt(config.timeout, 10);
 
-      if (isNaN(timeout)) {
+      if (Number.isNaN(timeout)) {
         reject(new AxiosError(
           'error trying to parse `config.timeout` to int',
           AxiosError.ERR_BAD_OPTION_VALUE,