CountQueuingStrategy: CountQueuingStrategy() constructor

new CountQueuingStrategy(options)

const queuingStrategy = new CountQueuingStrategy({ highWaterMark: 1 });
const writableStream = new WritableStream(
  {
    // Implement the sink
    write(chunk) {
      // …
    },
    close() {
      // …
    },
    abort(err) {
      console.log("Sink error:", err);
    },
  },
  queuingStrategy,
);
const size = queuingStrategy.size();