WritableStream: locked property
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since May 2022.
Note: This feature is available in Web Workers.
The locked read-only property of the WritableStream interface returns a boolean indicating whether the WritableStream is locked to a writer.
Value
A boolean value indicating whether or not the writable stream is locked.
Examples
js
const writableStream = new WritableStream(
{
write(chunk) {
// …
},
close() {
// …
},
abort(err) {
// …
},
},
queuingStrategy,
);
// …
const writer = writableStream.getWriter();
writableStream.locked;
// should return true, as the stream has been locked to a writer
Specifications
| Specification |
|---|
| Streams # ref-for-ws-locked② |
Browser compatibility
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