ByteLengthQueuingStrategy

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

Constructor

ByteLengthQueuingStrategy()

Creates a new ByteLengthQueuingStrategy object instance.

Instance properties

ByteLengthQueuingStrategy.highWaterMark Read only

The total number of bytes that can be contained in the internal queue before backpressure is applied.

Instance methods

ByteLengthQueuingStrategy.size()

Returns the given chunk's byteLength property.

Examples

js

const queueingStrategy = new ByteLengthQueuingStrategy({ highWaterMark: 1024 });

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

const size = queueingStrategy.size(chunk);

Specifications

Specification
Streams Standard
# blqs-class

Browser compatibility

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See also