Note: This feature is available in Web Workers.
The bodyUsed read-only property of the Request interface is a boolean value that indicates whether the request body has been read yet.
A boolean value.
const request = new Request("/myEndpoint", {
method: "POST",
body: "Hello world",
});
request.bodyUsed; // false
request.text().then((bodyAsText) => {
console.log(request.bodyUsed); // true
});