DecompressionStream: readable property
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since May 2023.
Note: This feature is available in Web Workers.
The readable read-only property of the DecompressionStream interface returns a ReadableStream that emits decompressed data as Uint8Array chunks.
Value
Examples
This example creates a DecompressionStream that performs gzip decompression. It writes some compressed binary data to the writable stream, then reads the decompressed data from the readable stream, decoding it as UTF-8 text.
js
const stream = new DecompressionStream("gzip");
// Write data to be compressed
const data = Uint8Array.fromBase64(
"H4sIAAAAAAAAE/NIzcnJ11Eozy/KSVEEAObG5usNAAAA",
);
const writer = stream.writable.getWriter();
writer.write(data);
writer.close();
// Read compressed data
const reader = stream.readable.getReader();
let done = false;
let output = [];
while (!done) {
const result = await reader.read();
if (result.value) {
output.push(...result.value);
}
done = result.done;
}
console.log(new TextDecoder().decode(new Uint8Array(output))); // Hello, world!
Specifications
| Specification |
|---|
| Streams # dom-generictransformstream-readable |
Browser compatibility
| desktop | mobile | server | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
readable
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support