ByteLengthQueuingStrategy

Note: This feature is available in Web Workers.

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
# blqs-class

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
ByteLengthQueuingStrategy
ByteLengthQueuingStrategy() constructor
highWaterMark
size

Legend

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Full support
Full support
Partial support
Partial support
Has more compatibility info.

See also