next.config.js

const withAntdLess = require('next-plugin-antd-less');

module.exports = withAntdLess({
  reactStrictMode: true,
  modifyVars: {
    '@primary-color': '#0050b3',
  },
  env: {
    API_HOST: process.env.API_HOST
  },
  async headers() {
    return [
      {
        // matching all API routes
        source: '/api/:path*',
        headers: [
          { key: 'Access-Control-Allow-Credentials', value: 'true' },
          { key: 'Access-Control-Allow-Origin', value: '*' },
          { key: 'Access-Control-Allow-Methods', value: 'GET,OPTIONS,PATCH,DELETE,POST,PUT' },
          { key: 'Access-Control-Allow-Headers', value: 'X-CSRF-Token, X-Requested-With, Accept, Accept-Version, Content-Length, Content-MD5, Content-Type, Date, X-Api-Version' },
        ]
      }
    ]
  }
});