CountQueuingStrategy.CountQueuingStrategy()

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Experimental

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

The CountQueuingStrategy() constructor creates and returns a CountQueuingStrategy object instance.

Syntax

var countQueuingStrategy = new CountQueuingStrategy({highWaterMark});

Parameters

{highWaterMark}
An object containing a highWaterMark property. This is a non-negative integer defining the total number of chunks that can be contained in the internal queue before backpressure is applied.

Return value

An instance of the CountQueuingStrategy object.

Exceptions

None.

Examples

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

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

var size = queuingStrategy.size();

Specifications

Specification Status Comment
Streams
The definition of 'CountQueuingStrategy()' in that specification.
Living Standard Initial definition.

Browser compatibility

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