CountQueuingStrategy.CountQueuingStrategy()

The CountQueuingStrategy() constructor creates and returns a CountQueuingStrategy object instance.

var countQueuingStrategy = new CountQueuingStrategy({highWaterMark});

{highWaterMark}

An object containing a highWaterMark property. This is a non-negative integer defining the total number of chunks that can be contained in the internal queue before backpressure is applied.

An instance of the CountQueuingStrategy object.

None.

const queuingStrategy = new CountQueuingStrategy({ highWaterMark: 1 });

const writableStream = new WritableStream({
  // Implement the sink
  write(chunk) {
    ...
  },
  close() {
    ...
  },
  abort(err) {
    console.log("Sink error:", err);
  }
}, queuingStrategy);

var size = queuingStrategy.size();