ByteLengthQueuingStrategy

The ByteLengthQueuingStrategy interface of the Streams API provides a built-in byte length queuing strategy that can be used when constructing streams.

ByteLengthQueuingStrategy()

Creates a new ByteLengthQueuingStrategy object instance.

None.

ByteLengthQueuingStrategy.size()

Returns the given chunk’s byteLength property.

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

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

var size = queueingStrategy.size(chunk);