stream: normalize fused stateless transform results#65367

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Merged
nodejs-github-bot merged 1 commit into from
Aug 25, 2026
+65 −10
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stream: normalize fused stateless transform results #65367

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43 changes: 33 additions & 10 deletions lib/internal/streams/iter/pull.js
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -434,6 +434,16 @@ async function appendTransformResultAsyncSlow(target, result) {
}
}

function normalizeTransformResultFast(result) {
if (isUint8ArrayBatch(result)) {
return result.length === 0 ? null : result;
}
if (isUint8Array(result)) return [result];
if (typeof result === 'string') return [toUint8Array(result)];
if (isAnyArrayBuffer(result)) return [new Uint8Array(result)];
if (ArrayBufferIsView(result)) return [arrayBufferViewToUint8Array(result)];
Comment thread
trivikr marked this conversation as resolved.
}

// =============================================================================
// Sync Pipeline Implementation
// =============================================================================
Expand All@@ -457,7 +467,17 @@ function* applyFusedStatelessSyncTransforms(source, run) {
current = null;
break;
}
current = result;
if (i === run.length - 1) {
current = result;
continue;
}
current = normalizeTransformResultFast(result);
if (current === undefined) {
const normalized = [];
appendTransformResultSync(normalized, result);
current = normalized.length === 0 ? null : normalized[0];
}
if (current === null) break;
}
if (current === null) continue;
// Inline normalization with Uint8Array[] batch as the fast path,
Expand DownExpand Up@@ -570,21 +590,24 @@ async function* applyFusedStatelessAsyncTransforms(source, run, signal) {
for await (const chunks of source) {
let current = chunks;
for (let i = 0; i < run.length; i++) {
const result = run[i](current, { __proto__: null, signal });
let result = run[i](current, { __proto__: null, signal });
if (isPromise(result)) result = await result;
if (result === null) {
current = null;
break;
}
if (isPromise(result)) {
const resolved = await result;
if (resolved === null) {
current = null;
break;
}
current = resolved;
} else {
if (i === run.length - 1) {
current = result;
continue;
}
current = normalizeTransformResultFast(result);
if (current === undefined) {
const normalized = [];
const pendingResult = appendTransformResultAsync(normalized, result);
if (pendingResult !== undefined) await pendingResult;
current = normalized.length === 0 ? null : normalized[0];
}
if (current === null) break;
}
if (current === null) continue;
// Normalize the final output
Expand Down
32 changes: 32 additions & 0 deletions test/parallel/test-stream-iter-transform-output.js
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -59,6 +59,36 @@ async function testSyncTransformReturnsFloat32Array() {
assert.strictEqual(data.byteLength, 4);
}

// Consecutive stateless transforms normalize intermediate output (async)
async function testConsecutiveTransformsNormalizeIntermediateOutput() {
const first = (chunks) => {
return chunks === null ? null : new Uint8Array([65]);
};
let receivedBatch = false;
const second = (chunks) => {
if (chunks !== null) receivedBatch = Array.isArray(chunks);
return chunks;
};
const data = await bytes(pull(from('x'), first, second));
assert.ok(receivedBatch);
assert.deepStrictEqual(data, new Uint8Array([65]));
}

// Consecutive stateless transforms normalize intermediate output (sync)
async function testConsecutiveSyncTransformsNormalizeIntermediateOutput() {
const first = (chunks) => {
return chunks === null ? null : new Uint8Array([65]);
};
let receivedBatch = false;
const second = (chunks) => {
if (chunks !== null) receivedBatch = Array.isArray(chunks);
return chunks;
};
const data = bytesSync(pullSync(fromSync('x'), first, second));
assert.ok(receivedBatch);
assert.deepStrictEqual(data, new Uint8Array([65]));
}

// Stateless transform returns a sync generator (iterable)
async function testTransformReturnsGenerator() {
const tx = (chunks) => {
Expand DownExpand Up@@ -233,6 +263,8 @@ Promise.all([
testSyncTransformReturnsArrayBuffer(),
testTransformReturnsFloat32Array(),
testSyncTransformReturnsFloat32Array(),
testConsecutiveTransformsNormalizeIntermediateOutput(),
testConsecutiveSyncTransformsNormalizeIntermediateOutput(),
testTransformReturnsGenerator(),
testSyncTransformReturnsGenerator(),
testTransformReturnsAsyncGenerator(),
Expand Down
Loading
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
stream: normalize fused stateless transform results#65367

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to your account

 Merged

nodejs-github-bot
merged 1 commit into

from

Aug 25, 2026

+65

−10

 Merged


stream: normalize fused stateless transform results
#65367
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43 changes: 33 additions & 10 deletions
lib/internal/streams/iter/pull.js

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -434,6 +434,16 @@ async function appendTransformResultAsyncSlow(target, result) {
 }
}

function normalizeTransformResultFast(result) {
 if (isUint8ArrayBatch(result)) {
 return result.length === 0 ? null : result;
 }
 if (isUint8Array(result)) return [result];
 if (typeof result === 'string') return [toUint8Array(result)];
 if (isAnyArrayBuffer(result)) return [new Uint8Array(result)];
 if (ArrayBufferIsView(result)) return [arrayBufferViewToUint8Array(result)];
Comment thread
trivikr marked this conversation as resolved.

}

// =============================================================================
// Sync Pipeline Implementation
// =============================================================================
Expand All@@ -457,7 +467,17 @@ function* applyFusedStatelessSyncTransforms(source, run) {
 current = null;
 break;
 }
 current = result;
 if (i === run.length - 1) {
 current = result;
 continue;
 }
 current = normalizeTransformResultFast(result);
 if (current === undefined) {
 const normalized = [];
 appendTransformResultSync(normalized, result);
 current = normalized.length === 0 ? null : normalized[0];
 }
 if (current === null) break;
 }
 if (current === null) continue;
 // Inline normalization with Uint8Array[] batch as the fast path,
Expand DownExpand Up@@ -570,21 +590,24 @@ async function* applyFusedStatelessAsyncTransforms(source, run, signal) {
 for await (const chunks of source) {
 let current = chunks;
 for (let i = 0; i < run.length; i++) {
 const result = run[i](current, { __proto__: null, signal });
 let result = run[i](current, { __proto__: null, signal });
 if (isPromise(result)) result = await result;
 if (result === null) {
 current = null;
 break;
 }
 if (isPromise(result)) {
 const resolved = await result;
 if (resolved === null) {
 current = null;
 break;
 }
 current = resolved;
 } else {
 if (i === run.length - 1) {
 current = result;
 continue;
 }
 current = normalizeTransformResultFast(result);
 if (current === undefined) {
 const normalized = [];
 const pendingResult = appendTransformResultAsync(normalized, result);
 if (pendingResult !== undefined) await pendingResult;
 current = normalized.length === 0 ? null : normalized[0];
 }
 if (current === null) break;
 }
 if (current === null) continue;
 // Normalize the final output
Expand Down

32 changes: 32 additions & 0 deletions
test/parallel/test-stream-iter-transform-output.js

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -59,6 +59,36 @@ async function testSyncTransformReturnsFloat32Array() {
 assert.strictEqual(data.byteLength, 4);
}

// Consecutive stateless transforms normalize intermediate output (async)
async function testConsecutiveTransformsNormalizeIntermediateOutput() {
 const first = (chunks) => {
 return chunks === null ? null : new Uint8Array([65]);
 };
 let receivedBatch = false;
 const second = (chunks) => {
 if (chunks !== null) receivedBatch = Array.isArray(chunks);
 return chunks;
 };
 const data = await bytes(pull(from('x'), first, second));
 assert.ok(receivedBatch);
 assert.deepStrictEqual(data, new Uint8Array([65]));
}

// Consecutive stateless transforms normalize intermediate output (sync)
async function testConsecutiveSyncTransformsNormalizeIntermediateOutput() {
 const first = (chunks) => {
 return chunks === null ? null : new Uint8Array([65]);
 };
 let receivedBatch = false;
 const second = (chunks) => {
 if (chunks !== null) receivedBatch = Array.isArray(chunks);
 return chunks;
 };
 const data = bytesSync(pullSync(fromSync('x'), first, second));
 assert.ok(receivedBatch);
 assert.deepStrictEqual(data, new Uint8Array([65]));
}

// Stateless transform returns a sync generator (iterable)
async function testTransformReturnsGenerator() {
 const tx = (chunks) => {
Expand DownExpand Up@@ -233,6 +263,8 @@ Promise.all([
 testSyncTransformReturnsArrayBuffer(),
 testTransformReturnsFloat32Array(),
 testSyncTransformReturnsFloat32Array(),
 testConsecutiveTransformsNormalizeIntermediateOutput(),
 testConsecutiveSyncTransformsNormalizeIntermediateOutput(),
 testTransformReturnsGenerator(),
 testSyncTransformReturnsGenerator(),
 testTransformReturnsAsyncGenerator(),
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
stream: normalize fused stateless transform results#65367

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Sign in
to your account

 Merged

nodejs-github-bot
merged 1 commit into

from

Aug 25, 2026

+65

−10

 Merged


stream: normalize fused stateless transform results
#65367
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43 changes: 33 additions & 10 deletions
lib/internal/streams/iter/pull.js

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -434,6 +434,16 @@ async function appendTransformResultAsyncSlow(target, result) {
 }
}

function normalizeTransformResultFast(result) {
 if (isUint8ArrayBatch(result)) {
 return result.length === 0 ? null : result;
 }
 if (isUint8Array(result)) return [result];
 if (typeof result === 'string') return [toUint8Array(result)];
 if (isAnyArrayBuffer(result)) return [new Uint8Array(result)];
 if (ArrayBufferIsView(result)) return [arrayBufferViewToUint8Array(result)];
Comment thread
trivikr marked this conversation as resolved.

}

// =============================================================================
// Sync Pipeline Implementation
// =============================================================================
Expand All@@ -457,7 +467,17 @@ function* applyFusedStatelessSyncTransforms(source, run) {
 current = null;
 break;
 }
 current = result;
 if (i === run.length - 1) {
 current = result;
 continue;
 }
 current = normalizeTransformResultFast(result);
 if (current === undefined) {
 const normalized = [];
 appendTransformResultSync(normalized, result);
 current = normalized.length === 0 ? null : normalized[0];
 }
 if (current === null) break;
 }
 if (current === null) continue;
 // Inline normalization with Uint8Array[] batch as the fast path,
Expand DownExpand Up@@ -570,21 +590,24 @@ async function* applyFusedStatelessAsyncTransforms(source, run, signal) {
 for await (const chunks of source) {
 let current = chunks;
 for (let i = 0; i < run.length; i++) {
 const result = run[i](current, { __proto__: null, signal });
 let result = run[i](current, { __proto__: null, signal });
 if (isPromise(result)) result = await result;
 if (result === null) {
 current = null;
 break;
 }
 if (isPromise(result)) {
 const resolved = await result;
 if (resolved === null) {
 current = null;
 break;
 }
 current = resolved;
 } else {
 if (i === run.length - 1) {
 current = result;
 continue;
 }
 current = normalizeTransformResultFast(result);
 if (current === undefined) {
 const normalized = [];
 const pendingResult = appendTransformResultAsync(normalized, result);
 if (pendingResult !== undefined) await pendingResult;
 current = normalized.length === 0 ? null : normalized[0];
 }
 if (current === null) break;
 }
 if (current === null) continue;
 // Normalize the final output
Expand Down

32 changes: 32 additions & 0 deletions
test/parallel/test-stream-iter-transform-output.js

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -59,6 +59,36 @@ async function testSyncTransformReturnsFloat32Array() {
 assert.strictEqual(data.byteLength, 4);
}

// Consecutive stateless transforms normalize intermediate output (async)
async function testConsecutiveTransformsNormalizeIntermediateOutput() {
 const first = (chunks) => {
 return chunks === null ? null : new Uint8Array([65]);
 };
 let receivedBatch = false;
 const second = (chunks) => {
 if (chunks !== null) receivedBatch = Array.isArray(chunks);
 return chunks;
 };
 const data = await bytes(pull(from('x'), first, second));
 assert.ok(receivedBatch);
 assert.deepStrictEqual(data, new Uint8Array([65]));
}

// Consecutive stateless transforms normalize intermediate output (sync)
async function testConsecutiveSyncTransformsNormalizeIntermediateOutput() {
 const first = (chunks) => {
 return chunks === null ? null : new Uint8Array([65]);
 };
 let receivedBatch = false;
 const second = (chunks) => {
 if (chunks !== null) receivedBatch = Array.isArray(chunks);
 return chunks;
 };
 const data = bytesSync(pullSync(fromSync('x'), first, second));
 assert.ok(receivedBatch);
 assert.deepStrictEqual(data, new Uint8Array([65]));
}

// Stateless transform returns a sync generator (iterable)
async function testTransformReturnsGenerator() {
 const tx = (chunks) => {
Expand DownExpand Up@@ -233,6 +263,8 @@ Promise.all([
 testSyncTransformReturnsArrayBuffer(),
 testTransformReturnsFloat32Array(),
 testSyncTransformReturnsFloat32Array(),
 testConsecutiveTransformsNormalizeIntermediateOutput(),
 testConsecutiveSyncTransformsNormalizeIntermediateOutput(),
 testTransformReturnsGenerator(),
 testSyncTransformReturnsGenerator(),
 testTransformReturnsAsyncGenerator(),
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
stream: normalize fused stateless transform results#65367

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By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

nodejs-github-bot
merged 1 commit into

from

Aug 25, 2026

+65

−10

 Merged


stream: normalize fused stateless transform results
#65367
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43 changes: 33 additions & 10 deletions
lib/internal/streams/iter/pull.js

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -434,6 +434,16 @@ async function appendTransformResultAsyncSlow(target, result) {
 }
}

function normalizeTransformResultFast(result) {
 if (isUint8ArrayBatch(result)) {
 return result.length === 0 ? null : result;
 }
 if (isUint8Array(result)) return [result];
 if (typeof result === 'string') return [toUint8Array(result)];
 if (isAnyArrayBuffer(result)) return [new Uint8Array(result)];
 if (ArrayBufferIsView(result)) return [arrayBufferViewToUint8Array(result)];
Comment thread
trivikr marked this conversation as resolved.

}

// =============================================================================
// Sync Pipeline Implementation
// =============================================================================
Expand All@@ -457,7 +467,17 @@ function* applyFusedStatelessSyncTransforms(source, run) {
 current = null;
 break;
 }
 current = result;
 if (i === run.length - 1) {
 current = result;
 continue;
 }
 current = normalizeTransformResultFast(result);
 if (current === undefined) {
 const normalized = [];
 appendTransformResultSync(normalized, result);
 current = normalized.length === 0 ? null : normalized[0];
 }
 if (current === null) break;
 }
 if (current === null) continue;
 // Inline normalization with Uint8Array[] batch as the fast path,
Expand DownExpand Up@@ -570,21 +590,24 @@ async function* applyFusedStatelessAsyncTransforms(source, run, signal) {
 for await (const chunks of source) {
 let current = chunks;
 for (let i = 0; i < run.length; i++) {
 const result = run[i](current, { __proto__: null, signal });
 let result = run[i](current, { __proto__: null, signal });
 if (isPromise(result)) result = await result;
 if (result === null) {
 current = null;
 break;
 }
 if (isPromise(result)) {
 const resolved = await result;
 if (resolved === null) {
 current = null;
 break;
 }
 current = resolved;
 } else {
 if (i === run.length - 1) {
 current = result;
 continue;
 }
 current = normalizeTransformResultFast(result);
 if (current === undefined) {
 const normalized = [];
 const pendingResult = appendTransformResultAsync(normalized, result);
 if (pendingResult !== undefined) await pendingResult;
 current = normalized.length === 0 ? null : normalized[0];
 }
 if (current === null) break;
 }
 if (current === null) continue;
 // Normalize the final output
Expand Down

32 changes: 32 additions & 0 deletions
test/parallel/test-stream-iter-transform-output.js

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -59,6 +59,36 @@ async function testSyncTransformReturnsFloat32Array() {
 assert.strictEqual(data.byteLength, 4);
}

// Consecutive stateless transforms normalize intermediate output (async)
async function testConsecutiveTransformsNormalizeIntermediateOutput() {
 const first = (chunks) => {
 return chunks === null ? null : new Uint8Array([65]);
 };
 let receivedBatch = false;
 const second = (chunks) => {
 if (chunks !== null) receivedBatch = Array.isArray(chunks);
 return chunks;
 };
 const data = await bytes(pull(from('x'), first, second));
 assert.ok(receivedBatch);
 assert.deepStrictEqual(data, new Uint8Array([65]));
}

// Consecutive stateless transforms normalize intermediate output (sync)
async function testConsecutiveSyncTransformsNormalizeIntermediateOutput() {
 const first = (chunks) => {
 return chunks === null ? null : new Uint8Array([65]);
 };
 let receivedBatch = false;
 const second = (chunks) => {
 if (chunks !== null) receivedBatch = Array.isArray(chunks);
 return chunks;
 };
 const data = bytesSync(pullSync(fromSync('x'), first, second));
 assert.ok(receivedBatch);
 assert.deepStrictEqual(data, new Uint8Array([65]));
}

// Stateless transform returns a sync generator (iterable)
async function testTransformReturnsGenerator() {
 const tx = (chunks) => {
Expand DownExpand Up@@ -233,6 +263,8 @@ Promise.all([
 testSyncTransformReturnsArrayBuffer(),
 testTransformReturnsFloat32Array(),
 testSyncTransformReturnsFloat32Array(),
 testConsecutiveTransformsNormalizeIntermediateOutput(),
 testConsecutiveSyncTransformsNormalizeIntermediateOutput(),
 testTransformReturnsGenerator(),
 testSyncTransformReturnsGenerator(),
 testTransformReturnsAsyncGenerator(),
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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merged 1 commit into

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Aug 25, 2026

+65

−10

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stream: normalize fused stateless transform results
#65367
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43 changes: 33 additions & 10 deletions
lib/internal/streams/iter/pull.js

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -434,6 +434,16 @@ async function appendTransformResultAsyncSlow(target, result) {
 }
}

function normalizeTransformResultFast(result) {
 if (isUint8ArrayBatch(result)) {
 return result.length === 0 ? null : result;
 }
 if (isUint8Array(result)) return [result];
 if (typeof result === 'string') return [toUint8Array(result)];
 if (isAnyArrayBuffer(result)) return [new Uint8Array(result)];
 if (ArrayBufferIsView(result)) return [arrayBufferViewToUint8Array(result)];
Comment thread
trivikr marked this conversation as resolved.

}

// =============================================================================
// Sync Pipeline Implementation
// =============================================================================
Expand All@@ -457,7 +467,17 @@ function* applyFusedStatelessSyncTransforms(source, run) {
 current = null;
 break;
 }
 current = result;
 if (i === run.length - 1) {
 current = result;
 continue;
 }
 current = normalizeTransformResultFast(result);
 if (current === undefined) {
 const normalized = [];
 appendTransformResultSync(normalized, result);
 current = normalized.length === 0 ? null : normalized[0];
 }
 if (current === null) break;
 }
 if (current === null) continue;
 // Inline normalization with Uint8Array[] batch as the fast path,
Expand DownExpand Up@@ -570,21 +590,24 @@ async function* applyFusedStatelessAsyncTransforms(source, run, signal) {
 for await (const chunks of source) {
 let current = chunks;
 for (let i = 0; i < run.length; i++) {
 const result = run[i](current, { __proto__: null, signal });
 let result = run[i](current, { __proto__: null, signal });
 if (isPromise(result)) result = await result;
 if (result === null) {
 current = null;
 break;
 }
 if (isPromise(result)) {
 const resolved = await result;
 if (resolved === null) {
 current = null;
 break;
 }
 current = resolved;
 } else {
 if (i === run.length - 1) {
 current = result;
 continue;
 }
 current = normalizeTransformResultFast(result);
 if (current === undefined) {
 const normalized = [];
 const pendingResult = appendTransformResultAsync(normalized, result);
 if (pendingResult !== undefined) await pendingResult;
 current = normalized.length === 0 ? null : normalized[0];
 }
 if (current === null) break;
 }
 if (current === null) continue;
 // Normalize the final output
Expand Down

32 changes: 32 additions & 0 deletions
test/parallel/test-stream-iter-transform-output.js

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -59,6 +59,36 @@ async function testSyncTransformReturnsFloat32Array() {
 assert.strictEqual(data.byteLength, 4);
}

// Consecutive stateless transforms normalize intermediate output (async)
async function testConsecutiveTransformsNormalizeIntermediateOutput() {
 const first = (chunks) => {
 return chunks === null ? null : new Uint8Array([65]);
 };
 let receivedBatch = false;
 const second = (chunks) => {
 if (chunks !== null) receivedBatch = Array.isArray(chunks);
 return chunks;
 };
 const data = await bytes(pull(from('x'), first, second));
 assert.ok(receivedBatch);
 assert.deepStrictEqual(data, new Uint8Array([65]));
}

// Consecutive stateless transforms normalize intermediate output (sync)
async function testConsecutiveSyncTransformsNormalizeIntermediateOutput() {
 const first = (chunks) => {
 return chunks === null ? null : new Uint8Array([65]);
 };
 let receivedBatch = false;
 const second = (chunks) => {
 if (chunks !== null) receivedBatch = Array.isArray(chunks);
 return chunks;
 };
 const data = bytesSync(pullSync(fromSync('x'), first, second));
 assert.ok(receivedBatch);
 assert.deepStrictEqual(data, new Uint8Array([65]));
}

// Stateless transform returns a sync generator (iterable)
async function testTransformReturnsGenerator() {
 const tx = (chunks) => {
Expand DownExpand Up@@ -233,6 +263,8 @@ Promise.all([
 testSyncTransformReturnsArrayBuffer(),
 testTransformReturnsFloat32Array(),
 testSyncTransformReturnsFloat32Array(),
 testConsecutiveTransformsNormalizeIntermediateOutput(),
 testConsecutiveSyncTransformsNormalizeIntermediateOutput(),
 testTransformReturnsGenerator(),
 testSyncTransformReturnsGenerator(),
 testTransformReturnsAsyncGenerator(),
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
stream: normalize fused stateless transform results#65367

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 Merged

nodejs-github-bot
merged 1 commit into

from

Aug 25, 2026

+65

−10

 Merged


stream: normalize fused stateless transform results
#65367
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43 changes: 33 additions & 10 deletions
lib/internal/streams/iter/pull.js

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -434,6 +434,16 @@ async function appendTransformResultAsyncSlow(target, result) {
 }
}

function normalizeTransformResultFast(result) {
 if (isUint8ArrayBatch(result)) {
 return result.length === 0 ? null : result;
 }
 if (isUint8Array(result)) return [result];
 if (typeof result === 'string') return [toUint8Array(result)];
 if (isAnyArrayBuffer(result)) return [new Uint8Array(result)];
 if (ArrayBufferIsView(result)) return [arrayBufferViewToUint8Array(result)];
Comment thread
trivikr marked this conversation as resolved.

}

// =============================================================================
// Sync Pipeline Implementation
// =============================================================================
Expand All@@ -457,7 +467,17 @@ function* applyFusedStatelessSyncTransforms(source, run) {
 current = null;
 break;
 }
 current = result;
 if (i === run.length - 1) {
 current = result;
 continue;
 }
 current = normalizeTransformResultFast(result);
 if (current === undefined) {
 const normalized = [];
 appendTransformResultSync(normalized, result);
 current = normalized.length === 0 ? null : normalized[0];
 }
 if (current === null) break;
 }
 if (current === null) continue;
 // Inline normalization with Uint8Array[] batch as the fast path,
Expand DownExpand Up@@ -570,21 +590,24 @@ async function* applyFusedStatelessAsyncTransforms(source, run, signal) {
 for await (const chunks of source) {
 let current = chunks;
 for (let i = 0; i < run.length; i++) {
 const result = run[i](current, { __proto__: null, signal });
 let result = run[i](current, { __proto__: null, signal });
 if (isPromise(result)) result = await result;
 if (result === null) {
 current = null;
 break;
 }
 if (isPromise(result)) {
 const resolved = await result;
 if (resolved === null) {
 current = null;
 break;
 }
 current = resolved;
 } else {
 if (i === run.length - 1) {
 current = result;
 continue;
 }
 current = normalizeTransformResultFast(result);
 if (current === undefined) {
 const normalized = [];
 const pendingResult = appendTransformResultAsync(normalized, result);
 if (pendingResult !== undefined) await pendingResult;
 current = normalized.length === 0 ? null : normalized[0];
 }
 if (current === null) break;
 }
 if (current === null) continue;
 // Normalize the final output
Expand Down

32 changes: 32 additions & 0 deletions
test/parallel/test-stream-iter-transform-output.js

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -59,6 +59,36 @@ async function testSyncTransformReturnsFloat32Array() {
 assert.strictEqual(data.byteLength, 4);
}

// Consecutive stateless transforms normalize intermediate output (async)
async function testConsecutiveTransformsNormalizeIntermediateOutput() {
 const first = (chunks) => {
 return chunks === null ? null : new Uint8Array([65]);
 };
 let receivedBatch = false;
 const second = (chunks) => {
 if (chunks !== null) receivedBatch = Array.isArray(chunks);
 return chunks;
 };
 const data = await bytes(pull(from('x'), first, second));
 assert.ok(receivedBatch);
 assert.deepStrictEqual(data, new Uint8Array([65]));
}

// Consecutive stateless transforms normalize intermediate output (sync)
async function testConsecutiveSyncTransformsNormalizeIntermediateOutput() {
 const first = (chunks) => {
 return chunks === null ? null : new Uint8Array([65]);
 };
 let receivedBatch = false;
 const second = (chunks) => {
 if (chunks !== null) receivedBatch = Array.isArray(chunks);
 return chunks;
 };
 const data = bytesSync(pullSync(fromSync('x'), first, second));
 assert.ok(receivedBatch);
 assert.deepStrictEqual(data, new Uint8Array([65]));
}

// Stateless transform returns a sync generator (iterable)
async function testTransformReturnsGenerator() {
 const tx = (chunks) => {
Expand DownExpand Up@@ -233,6 +263,8 @@ Promise.all([
 testSyncTransformReturnsArrayBuffer(),
 testTransformReturnsFloat32Array(),
 testSyncTransformReturnsFloat32Array(),
 testConsecutiveTransformsNormalizeIntermediateOutput(),
 testConsecutiveSyncTransformsNormalizeIntermediateOutput(),
 testTransformReturnsGenerator(),
 testSyncTransformReturnsGenerator(),
 testTransformReturnsAsyncGenerator(),
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
stream: normalize fused stateless transform results#65367

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privacy statement. We’ll occasionally send you account related emails.

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Sign in
to your account

 Merged

nodejs-github-bot
merged 1 commit into

from

Aug 25, 2026

+65

−10

 Merged


stream: normalize fused stateless transform results
#65367
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43 changes: 33 additions & 10 deletions
lib/internal/streams/iter/pull.js

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -434,6 +434,16 @@ async function appendTransformResultAsyncSlow(target, result) {
 }
}

function normalizeTransformResultFast(result) {
 if (isUint8ArrayBatch(result)) {
 return result.length === 0 ? null : result;
 }
 if (isUint8Array(result)) return [result];
 if (typeof result === 'string') return [toUint8Array(result)];
 if (isAnyArrayBuffer(result)) return [new Uint8Array(result)];
 if (ArrayBufferIsView(result)) return [arrayBufferViewToUint8Array(result)];
Comment thread
trivikr marked this conversation as resolved.

}

// =============================================================================
// Sync Pipeline Implementation
// =============================================================================
Expand All@@ -457,7 +467,17 @@ function* applyFusedStatelessSyncTransforms(source, run) {
 current = null;
 break;
 }
 current = result;
 if (i === run.length - 1) {
 current = result;
 continue;
 }
 current = normalizeTransformResultFast(result);
 if (current === undefined) {
 const normalized = [];
 appendTransformResultSync(normalized, result);
 current = normalized.length === 0 ? null : normalized[0];
 }
 if (current === null) break;
 }
 if (current === null) continue;
 // Inline normalization with Uint8Array[] batch as the fast path,
Expand DownExpand Up@@ -570,21 +590,24 @@ async function* applyFusedStatelessAsyncTransforms(source, run, signal) {
 for await (const chunks of source) {
 let current = chunks;
 for (let i = 0; i < run.length; i++) {
 const result = run[i](current, { __proto__: null, signal });
 let result = run[i](current, { __proto__: null, signal });
 if (isPromise(result)) result = await result;
 if (result === null) {
 current = null;
 break;
 }
 if (isPromise(result)) {
 const resolved = await result;
 if (resolved === null) {
 current = null;
 break;
 }
 current = resolved;
 } else {
 if (i === run.length - 1) {
 current = result;
 continue;
 }
 current = normalizeTransformResultFast(result);
 if (current === undefined) {
 const normalized = [];
 const pendingResult = appendTransformResultAsync(normalized, result);
 if (pendingResult !== undefined) await pendingResult;
 current = normalized.length === 0 ? null : normalized[0];
 }
 if (current === null) break;
 }
 if (current === null) continue;
 // Normalize the final output
Expand Down

32 changes: 32 additions & 0 deletions
test/parallel/test-stream-iter-transform-output.js

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -59,6 +59,36 @@ async function testSyncTransformReturnsFloat32Array() {
 assert.strictEqual(data.byteLength, 4);
}

// Consecutive stateless transforms normalize intermediate output (async)
async function testConsecutiveTransformsNormalizeIntermediateOutput() {
 const first = (chunks) => {
 return chunks === null ? null : new Uint8Array([65]);
 };
 let receivedBatch = false;
 const second = (chunks) => {
 if (chunks !== null) receivedBatch = Array.isArray(chunks);
 return chunks;
 };
 const data = await bytes(pull(from('x'), first, second));
 assert.ok(receivedBatch);
 assert.deepStrictEqual(data, new Uint8Array([65]));
}

// Consecutive stateless transforms normalize intermediate output (sync)
async function testConsecutiveSyncTransformsNormalizeIntermediateOutput() {
 const first = (chunks) => {
 return chunks === null ? null : new Uint8Array([65]);
 };
 let receivedBatch = false;
 const second = (chunks) => {
 if (chunks !== null) receivedBatch = Array.isArray(chunks);
 return chunks;
 };
 const data = bytesSync(pullSync(fromSync('x'), first, second));
 assert.ok(receivedBatch);
 assert.deepStrictEqual(data, new Uint8Array([65]));
}

// Stateless transform returns a sync generator (iterable)
async function testTransformReturnsGenerator() {
 const tx = (chunks) => {
Expand DownExpand Up@@ -233,6 +263,8 @@ Promise.all([
 testSyncTransformReturnsArrayBuffer(),
 testTransformReturnsFloat32Array(),
 testSyncTransformReturnsFloat32Array(),
 testConsecutiveTransformsNormalizeIntermediateOutput(),
 testConsecutiveSyncTransformsNormalizeIntermediateOutput(),
 testTransformReturnsGenerator(),
 testSyncTransformReturnsGenerator(),
 testTransformReturnsAsyncGenerator(),
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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stream: normalize fused stateless transform results#65367

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privacy statement. We’ll occasionally send you account related emails.

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to your account

 Merged

nodejs-github-bot
merged 1 commit into

from

Aug 25, 2026

+65

−10

 Merged


stream: normalize fused stateless transform results
#65367
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43 changes: 33 additions & 10 deletions
lib/internal/streams/iter/pull.js

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -434,6 +434,16 @@ async function appendTransformResultAsyncSlow(target, result) {
 }
}

function normalizeTransformResultFast(result) {
 if (isUint8ArrayBatch(result)) {
 return result.length === 0 ? null : result;
 }
 if (isUint8Array(result)) return [result];
 if (typeof result === 'string') return [toUint8Array(result)];
 if (isAnyArrayBuffer(result)) return [new Uint8Array(result)];
 if (ArrayBufferIsView(result)) return [arrayBufferViewToUint8Array(result)];
Comment thread
trivikr marked this conversation as resolved.

}

// =============================================================================
// Sync Pipeline Implementation
// =============================================================================
Expand All@@ -457,7 +467,17 @@ function* applyFusedStatelessSyncTransforms(source, run) {
 current = null;
 break;
 }
 current = result;
 if (i === run.length - 1) {
 current = result;
 continue;
 }
 current = normalizeTransformResultFast(result);
 if (current === undefined) {
 const normalized = [];
 appendTransformResultSync(normalized, result);
 current = normalized.length === 0 ? null : normalized[0];
 }
 if (current === null) break;
 }
 if (current === null) continue;
 // Inline normalization with Uint8Array[] batch as the fast path,
Expand DownExpand Up@@ -570,21 +590,24 @@ async function* applyFusedStatelessAsyncTransforms(source, run, signal) {
 for await (const chunks of source) {
 let current = chunks;
 for (let i = 0; i < run.length; i++) {
 const result = run[i](current, { __proto__: null, signal });
 let result = run[i](current, { __proto__: null, signal });
 if (isPromise(result)) result = await result;
 if (result === null) {
 current = null;
 break;
 }
 if (isPromise(result)) {
 const resolved = await result;
 if (resolved === null) {
 current = null;
 break;
 }
 current = resolved;
 } else {
 if (i === run.length - 1) {
 current = result;
 continue;
 }
 current = normalizeTransformResultFast(result);
 if (current === undefined) {
 const normalized = [];
 const pendingResult = appendTransformResultAsync(normalized, result);
 if (pendingResult !== undefined) await pendingResult;
 current = normalized.length === 0 ? null : normalized[0];
 }
 if (current === null) break;
 }
 if (current === null) continue;
 // Normalize the final output
Expand Down

32 changes: 32 additions & 0 deletions
test/parallel/test-stream-iter-transform-output.js

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -59,6 +59,36 @@ async function testSyncTransformReturnsFloat32Array() {
 assert.strictEqual(data.byteLength, 4);
}

// Consecutive stateless transforms normalize intermediate output (async)
async function testConsecutiveTransformsNormalizeIntermediateOutput() {
 const first = (chunks) => {
 return chunks === null ? null : new Uint8Array([65]);
 };
 let receivedBatch = false;
 const second = (chunks) => {
 if (chunks !== null) receivedBatch = Array.isArray(chunks);
 return chunks;
 };
 const data = await bytes(pull(from('x'), first, second));
 assert.ok(receivedBatch);
 assert.deepStrictEqual(data, new Uint8Array([65]));
}

// Consecutive stateless transforms normalize intermediate output (sync)
async function testConsecutiveSyncTransformsNormalizeIntermediateOutput() {
 const first = (chunks) => {
 return chunks === null ? null : new Uint8Array([65]);
 };
 let receivedBatch = false;
 const second = (chunks) => {
 if (chunks !== null) receivedBatch = Array.isArray(chunks);
 return chunks;
 };
 const data = bytesSync(pullSync(fromSync('x'), first, second));
 assert.ok(receivedBatch);
 assert.deepStrictEqual(data, new Uint8Array([65]));
}

// Stateless transform returns a sync generator (iterable)
async function testTransformReturnsGenerator() {
 const tx = (chunks) => {
Expand DownExpand Up@@ -233,6 +263,8 @@ Promise.all([
 testSyncTransformReturnsArrayBuffer(),
 testTransformReturnsFloat32Array(),
 testSyncTransformReturnsFloat32Array(),
 testConsecutiveTransformsNormalizeIntermediateOutput(),
 testConsecutiveSyncTransformsNormalizeIntermediateOutput(),
 testTransformReturnsGenerator(),
 testSyncTransformReturnsGenerator(),
 testTransformReturnsAsyncGenerator(),
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