Try to use response.json():
fetch('http://example.com/api/node', {
mode: "no-cors",
method: "GET",
headers: {
"Accept": "application/json"
}
}).then((response) => {
console.log(response.json()); // null
return dispatch({
type: "GET_CALL",
response: response.json()
});
})
.catch(error => { console.log('request failed', error); });