CountQueuingStrategy
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
CountQueuingStrategy
object instance.
Instance properties
CountQueuingStrategy.highWaterMark
Read 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 |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CountQueuingStrategy | ||||||||||||||
CountQueuingStrategy() constructor | ||||||||||||||
highWaterMark | ||||||||||||||
size |
Legend
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- Full support
- Partial support
- Partial support
- Has more compatibility info.
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.