fetch in console

fetch('http://localhost:4000', {
            headers: {
                'Content-Type': 'application/json',
                "Access-Control-Allow-Origin": "*"
            },
        })
            .catch(err => console.log(err))
            .then(data => data.json())
            .then(json => console.log(json))
/*
Promise { <state>: "pending" }
Object { content: "<h1>Hello World</h1>" }
*/