ByteLengthQueuingStrategy

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨January 2019⁩.

Note: This feature is available inWeb Workers.

TheByteLengthQueuingStrategy interface of theStreams API provides a built-in byte length queuing strategy that can be used when constructing streams.

Constructor

ByteLengthQueuingStrategy(): Creates a newByteLengthQueuingStrategy object instance.

Instance properties

ByteLengthQueuingStrategy.highWaterMarkRead only: The total number of bytes that can be contained in the internal queue beforebackpressure is applied.

Instance methods

ByteLengthQueuingStrategy.size(): Returns the given chunk'sbyteLength property.

Examples

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);