Baseline Widely available
Note: This feature is available in Web Workers.
The closed
read-only property of the ReadableStreamDefaultReader
interface returns a Promise
that fulfills when the stream closes, or rejects if the stream throws an error or the reader's lock is released. This property enables you to write code that responds to an end to the streaming process.
A Promise
.
In this snippet, a previously-created reader is queried to see if the stream has been closed. When it is closed, the promise fulfills and the message is logged to the console.
reader.closed.then(() => {
console.log("reader closed");
});
Specifications Browser compatibility See also
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