[React.js] http-proxy-middleware Cors이슈

npm i http-proxy-middleware -s

const { createProxyMiddleware } = require('http-proxy-middleware');
 
module.exports = function (app) {
    app.use(
        '/api',
        createProxyMiddleware({
            target: 'http://localhost:5000',
            changeOrigin: true,
        })
    );
};

모듈을 만들어준다.