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stream: make readable byte stream cloneable #46437

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stream: make readable byte stream cloneable #46437

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1b8cc04
stream: make readable byte stream cloneable
KhafraDev Jan 31, 2023
362b8e3
fix: test
KhafraDev Jan 31, 2023
26912bf
fix: lint
KhafraDev Jan 31, 2023
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4 changes: 3 additions & 1 deletion lib/internal/webstreams/readablestream.js
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Original file line number Diff line number Diff line change
Expand Up @@ -281,7 +281,9 @@ class ReadableStream {
this,
source,
extractHighWaterMark(highWaterMark, 0));
return;

// eslint-disable-next-line no-constructor-return
return makeTransferable(this);
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btw this pattern is used right below this so I copied it from there, rather than separating onto separate lines.

node/lib/internal/webstreams/readablestream.js

Lines 295 to 296 in 938341a

// eslint-disable-next-line no-constructor-return
return makeTransferable(this);

}

if (type !== undefined)
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18 changes: 18 additions & 0 deletions test/parallel/test-webstream-byte-readable-clone.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,18 @@
'use strict';

require('../common');
const assert = require('assert');

{
// https://github.com/nodejs/node/issues/46296
const stream = new ReadableStream({
start(controller) {
controller.close();
},
type: 'bytes',
});

const clone = structuredClone(stream, { transfer: [stream] });

assert(clone instanceof ReadableStream);
}