CountQueuingStrategy: highWaterMark property

{{APIRef("Streams")}}{{AvailableInWorkers}}

The read-only CountQueuingStrategy.highWaterMark property returns the total number of chunks that can be contained in the internal queue before backpressure is applied.

Values

An integer representing a number of chunks.

Examples

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

const readableStream = new ReadableStream(
  {
    start(controller) {
      // …
    },
    pull(controller) {
      // …
    },
    cancel(err) {
      console.log("stream error:", err);
    },
  },
  queuingStrategy,
);

const size = queuingStrategy.size(chunk);
console.log(`highWaterMark value: ${queuingStrategy.highWaterMark}$`);

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{domxref("CountQueuingStrategy.CountQueuingStrategy", "CountQueuingStrategy()")}} constructor