next: enable React.StrictMode

next.config.js

@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-var-requires */
 const withPlugins = require('next-compose-plugins');
 const withLess = require('next-with-less');
 const withGraphQL = require('next-plugin-graphql');
@@ -5,7 +6,7 @@ const withGraphQL = require('next-plugin-graphql');
 /** @type {import('next').NextConfig} */
 const nextConfig = {
   swcMinify: true,
-  reactStrictMode: false,
+  reactStrictMode: true,
   eslint: {
     ignoreDuringBuilds: true,
   },