CountQueuingStrategy

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

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 CountQueuingStrategy object instance.

Properties

None.

Methods

CountQueuingStrategy.size()

Returns 1.

Examples

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

const writableStream = new WritableStream({
  // Implement the sink
  write(chunk) {
    ...
  },
  close() {
    ...
  },
  abort(err) {
    console.log("Sink error:", err);
  }
}, queueingStrategy);

var size = queueingStrategy.size();

Specifications

Specification
Streams Standard (Streams)
# cqs-class

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
CountQueuingStrategy
59
16
65
No
46
10.1
59
59
65
43
10.3
7.0
CountQueuingStrategy
59
16
65
No
46
10.1
59
59
65
43
10.3
7.0
highWaterMark
78
16
65
The property is defined on the instance instead of the prototype object. See bug 1684316.
No
65
No
78
78
65
The property is defined on the instance instead of the prototype object. See bug 1684316.
56
No
12.0
size
59
16
65
No
46
10.1
59
59
65
43
10.3
7.0

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https://developer.mozilla.org/en-US/docs/Web/API/CountQueuingStrategy