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ByteLengthQueuingStrategy
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.
The ByteLengthQueuingStrategy interface of the Streams API provides a built-in byte length queuing strategy that can be used when constructing streams.
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);