@push.rocks/webstream
Version:
A cross-platform streaming package designed for node and web environments.
45 lines • 3.17 kB
JavaScript
export function convertDuplexToWebStream(duplex) {
const readable = new ReadableStream({
start(controller) {
duplex.on('readable', () => {
let chunk;
while (null !== (chunk = duplex.read())) {
controller.enqueue(chunk);
}
});
duplex.on('end', () => {
controller.close();
});
},
cancel(reason) {
duplex.destroy(new Error(reason));
}
});
const writable = new WritableStream({
write(chunk) {
return new Promise((resolve, reject) => {
const isBackpressured = !duplex.write(chunk, (error) => {
if (error) {
reject(error);
}
else {
resolve();
}
});
if (isBackpressured) {
duplex.once('drain', resolve);
}
});
},
close() {
return new Promise((resolve, reject) => {
duplex.end(resolve);
});
},
abort(reason) {
duplex.destroy(new Error(reason));
}
});
return { readable, writable };
}
//# sourceMappingURL=data:application/json;base64,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