CountQueuingStrategy
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 in Web Workers.
The CountQueuingStrategy interface of the Streams API provides a built-in chunk counting queuing strategy that can be used when constructing streams.
Constructor
CountQueuingStrategy()-
Creates a new
CountQueuingStrategyobject instance.
Instance properties
CountQueuingStrategy.highWaterMarkRead only-
The total number of chunks that can be contained in the internal queue before backpressure is applied.
Instance methods
CountQueuingStrategy.size()-
Always returns
1.
Examples
js
const queueingStrategy = new CountQueuingStrategy({ highWaterMark: 1 }); const writableStream = new WritableStream( { // Implement the sink write(chunk) { // … }, close() { // … }, abort(err) { console.log("Sink error:", err); }, }, queueingStrategy, ); const size = queueingStrategy.size(); Specifications
| Specification |
|---|
| Streams # cqs-class |