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WritableStreamDefaultWriter: releaseLock() method

The releaseLock() method of the WritableStreamDefaultWriter interface releases the writer's lock on the corresponding stream. After the lock is released, the writer is no longer active. If the associated stream is errored when the lock is released, the writer will appear errored in the same way from now on; otherwise, the writer will appear closed.

Syntax

js

releaseLock()

Parameters

None.

Return value

None (undefined).

Examples

js

const writableStream = new WritableStream(
  {
    write(chunk) {
      // ...
    },
    close() {
      // ...
    },
    abort(err) {
      // ...
    },
  },
  queuingStrategy,
);

// ...

const writer = writableStream.getWriter();

// ...

// release writer's lock on the stream when desired
writer.releaseLock();

Specifications

Specification
Streams Standard
# ref-for-default-writer-release-lock②

Browser compatibility

Desktop Mobile
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releaseLock 59 16 100 No 46 14.1 59 59 100 43 14.5 7.0

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https://developer.mozilla.org/en-US/docs/Web/API/WritableStreamDefaultWriter/releaseLock