feat(nextjs): Update default ignore list for sourcemaps - #18938

Merged
chargome merged 4 commits into
developfrom
cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference
Jan 23, 2026
Merged

feat(nextjs): Update default ignore list for sourcemaps#18938
chargome merged 4 commits into
developfrom
cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference

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  • adds more framework internals to the default ignore list (these will never emit sourcemaps and we just waste time processing these files)
  • updates ignore list to use glob patterns as this is the only way the cli properly picks them up

closes#18872

@chargomechargome self-assigned this Jan 22, 2026
@linear

linearBot commented Jan 22, 2026

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chargome marked this pull request as ready for review January 22, 2026 12:29
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Comment on lines +35 to +46
MAIN_CHUNKS: '**/main-*',
FRAMEWORK_CHUNKS: '**/framework-*',
FRAMEWORK_CHUNKS_DOT: '**/framework.*',
POLYFILLS_CHUNKS: '**/polyfills-*',
WEBPACK_CHUNKS: '**/webpack-*',
PAGE_CLIENT_REFERENCE_MANIFEST: '**/page_client-reference-manifest.js',
SERVER_REFERENCE_MANIFEST: '**/server-reference-manifest.js',
NEXT_FONT_MANIFEST: '**/next-font-manifest.js',
MIDDLEWARE_BUILD_MANIFEST: '**/middleware-build-manifest.js',
INTERCEPTION_ROUTE_REWRITE_MANIFEST: '**/interception-route-rewrite-manifest.js',
ROUTE_CLIENT_REFERENCE_MANIFEST: '**/route_client-reference-manifest.js',
MIDDLEWARE_REACT_LOADABLE_MANIFEST: '**/middleware-react-loadable-manifest.js',

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h: We need to ensure these are not too widely applied. The way it is now, these ignore patterns are also passed to the server source maps which might lead to false positives and ignore files we don't want to ignore.

We need a way to distinguish between which patterns we pass to which commands.

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I reverted the changes for all framework, polyfills etc. and just kept the manifest ones for now. We need to investigate if we can split up the upload calls or be smarter here. Also with turbopack there are likely more files we can ignore

Comment threadpackages/nextjs/src/config/getBuildPluginOptions.ts

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.

'**/route_client-reference-manifest.js',
'**/middleware-react-loadable-manifest.js',
'**/vendor/**',
]);

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Missing integration or E2E test for feature PR

Low Severity · Bugbot Rules

This feat PR changes the sourcemap ignore pattern behavior (merging user patterns with defaults instead of replacing) but only includes unit tests. Per the review rules: "When reviewing a feat PR, check if the PR includes at least one integration or E2E test. If neither of the two are present, add a comment, recommending to add one." An integration test verifying the actual sourcemap upload/ignore behavior with the new merged patterns would help ensure the feature works correctly in real build scenarios.

Fix in CursorFix in Web

@chargome
chargome merged commit bb40be1 into developJan 23, 2026
69 checks passed
@chargome
chargome deleted the cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference branch January 23, 2026 10:26
isaacs added a commit that referenced this pull request Jul 15, 2026
Prevent potentially large number of noisy warnings that by design never
emit sourcemaps.
For example:
```
~/b0f41f6b-e36f-409b-817f-921f7d295a7b-155.js (no sourcemap found, debug id b0f41f6b-...)
- warning: could not determine a source map reference (Could not auto-detect referenced sourcemap for ~/b0f41f6b-...-155.js)
```
This cannot be safely avoided using the file path glob approach, as seen
in #18938, because the file paths in question here (uuids and
alphanumeric hashes) can't be guaranteed to _never_ hold user code as
seen in the cases covered by #18938.
Instead, when no symbolication can be performed because the chunk is a
stub without any sourcemap, downgrade the warning to a debug log.
fix: #22199
fix: JS-3006
isaacs added a commit that referenced this pull request Jul 27, 2026
)
Prevent potentially large number of noisy warnings that by design never
emit sourcemaps.
For example:
```
~/b0f41f6b-e36f-409b-817f-921f7d295a7b-155.js (no sourcemap found, debug id b0f41f6b-...)
- warning: could not determine a source map reference (Could not auto-detect referenced sourcemap for ~/b0f41f6b-...-155.js)
```
This cannot be safely avoided using the file path glob approach, as seen
in #18938, because the file paths in question
here (uuids and alphanumeric hashes) can't be guaranteed to *never* hold
user code as seen in the cases covered by
#18938.
Instead, when no symbolication can be performed because the chunk is a
stub without any sourcemap, downgrade the warning to a debug log.
fix: #22199
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[nextjs] Add option to suppress "could not determine source map reference" warnings for specific files

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@chargome@andreiborza
, '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

feat(nextjs): Update default ignore list for sourcemaps - #18938

Merged
chargome merged 4 commits into
developfrom
cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference
Jan 23, 2026
Merged

feat(nextjs): Update default ignore list for sourcemaps#18938
chargome merged 4 commits into
developfrom
cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference

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  • adds more framework internals to the default ignore list (these will never emit sourcemaps and we just waste time processing these files)
  • updates ignore list to use glob patterns as this is the only way the cli properly picks them up

closes#18872

@chargomechargome self-assigned this Jan 22, 2026
@linear

linearBot commented Jan 22, 2026

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@chargome
chargome marked this pull request as ready for review January 22, 2026 12:29
cursor[bot]

This comment was marked as outdated.

Comment on lines +35 to +46
MAIN_CHUNKS: '**/main-*',
FRAMEWORK_CHUNKS: '**/framework-*',
FRAMEWORK_CHUNKS_DOT: '**/framework.*',
POLYFILLS_CHUNKS: '**/polyfills-*',
WEBPACK_CHUNKS: '**/webpack-*',
PAGE_CLIENT_REFERENCE_MANIFEST: '**/page_client-reference-manifest.js',
SERVER_REFERENCE_MANIFEST: '**/server-reference-manifest.js',
NEXT_FONT_MANIFEST: '**/next-font-manifest.js',
MIDDLEWARE_BUILD_MANIFEST: '**/middleware-build-manifest.js',
INTERCEPTION_ROUTE_REWRITE_MANIFEST: '**/interception-route-rewrite-manifest.js',
ROUTE_CLIENT_REFERENCE_MANIFEST: '**/route_client-reference-manifest.js',
MIDDLEWARE_REACT_LOADABLE_MANIFEST: '**/middleware-react-loadable-manifest.js',

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h: We need to ensure these are not too widely applied. The way it is now, these ignore patterns are also passed to the server source maps which might lead to false positives and ignore files we don't want to ignore.

We need a way to distinguish between which patterns we pass to which commands.

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MemberAuthor

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I reverted the changes for all framework, polyfills etc. and just kept the manifest ones for now. We need to investigate if we can split up the upload calls or be smarter here. Also with turbopack there are likely more files we can ignore

Comment threadpackages/nextjs/src/config/getBuildPluginOptions.ts

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.

'**/route_client-reference-manifest.js',
'**/middleware-react-loadable-manifest.js',
'**/vendor/**',
]);

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Missing integration or E2E test for feature PR

Low Severity · Bugbot Rules

This feat PR changes the sourcemap ignore pattern behavior (merging user patterns with defaults instead of replacing) but only includes unit tests. Per the review rules: "When reviewing a feat PR, check if the PR includes at least one integration or E2E test. If neither of the two are present, add a comment, recommending to add one." An integration test verifying the actual sourcemap upload/ignore behavior with the new merged patterns would help ensure the feature works correctly in real build scenarios.

Fix in CursorFix in Web

@chargome
chargome merged commit bb40be1 into developJan 23, 2026
69 checks passed
@chargome
chargome deleted the cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference branch January 23, 2026 10:26
isaacs added a commit that referenced this pull request Jul 15, 2026
Prevent potentially large number of noisy warnings that by design never
emit sourcemaps.
For example:
```
~/b0f41f6b-e36f-409b-817f-921f7d295a7b-155.js (no sourcemap found, debug id b0f41f6b-...)
- warning: could not determine a source map reference (Could not auto-detect referenced sourcemap for ~/b0f41f6b-...-155.js)
```
This cannot be safely avoided using the file path glob approach, as seen
in #18938, because the file paths in question here (uuids and
alphanumeric hashes) can't be guaranteed to _never_ hold user code as
seen in the cases covered by #18938.
Instead, when no symbolication can be performed because the chunk is a
stub without any sourcemap, downgrade the warning to a debug log.
fix: #22199
fix: JS-3006
isaacs added a commit that referenced this pull request Jul 27, 2026
)
Prevent potentially large number of noisy warnings that by design never
emit sourcemaps.
For example:
```
~/b0f41f6b-e36f-409b-817f-921f7d295a7b-155.js (no sourcemap found, debug id b0f41f6b-...)
- warning: could not determine a source map reference (Could not auto-detect referenced sourcemap for ~/b0f41f6b-...-155.js)
```
This cannot be safely avoided using the file path glob approach, as seen
in #18938, because the file paths in question
here (uuids and alphanumeric hashes) can't be guaranteed to *never* hold
user code as seen in the cases covered by
#18938.
Instead, when no symbolication can be performed because the chunk is a
stub without any sourcemap, downgrade the warning to a debug log.
fix: #22199
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Successfully merging this pull request may close these issues.

[nextjs] Add option to suppress "could not determine source map reference" warnings for specific files

2 participants

@chargome@andreiborza
, '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

feat(nextjs): Update default ignore list for sourcemaps - #18938

Merged
chargome merged 4 commits into
developfrom
cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference
Jan 23, 2026
Merged

feat(nextjs): Update default ignore list for sourcemaps#18938
chargome merged 4 commits into
developfrom
cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference

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@chargome

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  • adds more framework internals to the default ignore list (these will never emit sourcemaps and we just waste time processing these files)
  • updates ignore list to use glob patterns as this is the only way the cli properly picks them up

closes#18872

@chargomechargome self-assigned this Jan 22, 2026
@linear

linearBot commented Jan 22, 2026

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@chargome
chargome marked this pull request as ready for review January 22, 2026 12:29
cursor[bot]

This comment was marked as outdated.

Comment on lines +35 to +46
MAIN_CHUNKS: '**/main-*',
FRAMEWORK_CHUNKS: '**/framework-*',
FRAMEWORK_CHUNKS_DOT: '**/framework.*',
POLYFILLS_CHUNKS: '**/polyfills-*',
WEBPACK_CHUNKS: '**/webpack-*',
PAGE_CLIENT_REFERENCE_MANIFEST: '**/page_client-reference-manifest.js',
SERVER_REFERENCE_MANIFEST: '**/server-reference-manifest.js',
NEXT_FONT_MANIFEST: '**/next-font-manifest.js',
MIDDLEWARE_BUILD_MANIFEST: '**/middleware-build-manifest.js',
INTERCEPTION_ROUTE_REWRITE_MANIFEST: '**/interception-route-rewrite-manifest.js',
ROUTE_CLIENT_REFERENCE_MANIFEST: '**/route_client-reference-manifest.js',
MIDDLEWARE_REACT_LOADABLE_MANIFEST: '**/middleware-react-loadable-manifest.js',

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h: We need to ensure these are not too widely applied. The way it is now, these ignore patterns are also passed to the server source maps which might lead to false positives and ignore files we don't want to ignore.

We need a way to distinguish between which patterns we pass to which commands.

Copy link
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MemberAuthor

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I reverted the changes for all framework, polyfills etc. and just kept the manifest ones for now. We need to investigate if we can split up the upload calls or be smarter here. Also with turbopack there are likely more files we can ignore

Comment threadpackages/nextjs/src/config/getBuildPluginOptions.ts

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.

'**/route_client-reference-manifest.js',
'**/middleware-react-loadable-manifest.js',
'**/vendor/**',
]);

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Missing integration or E2E test for feature PR

Low Severity · Bugbot Rules

This feat PR changes the sourcemap ignore pattern behavior (merging user patterns with defaults instead of replacing) but only includes unit tests. Per the review rules: "When reviewing a feat PR, check if the PR includes at least one integration or E2E test. If neither of the two are present, add a comment, recommending to add one." An integration test verifying the actual sourcemap upload/ignore behavior with the new merged patterns would help ensure the feature works correctly in real build scenarios.

Fix in CursorFix in Web

@chargome
chargome merged commit bb40be1 into developJan 23, 2026
69 checks passed
@chargome
chargome deleted the cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference branch January 23, 2026 10:26
isaacs added a commit that referenced this pull request Jul 15, 2026
Prevent potentially large number of noisy warnings that by design never
emit sourcemaps.
For example:
```
~/b0f41f6b-e36f-409b-817f-921f7d295a7b-155.js (no sourcemap found, debug id b0f41f6b-...)
- warning: could not determine a source map reference (Could not auto-detect referenced sourcemap for ~/b0f41f6b-...-155.js)
```
This cannot be safely avoided using the file path glob approach, as seen
in #18938, because the file paths in question here (uuids and
alphanumeric hashes) can't be guaranteed to _never_ hold user code as
seen in the cases covered by #18938.
Instead, when no symbolication can be performed because the chunk is a
stub without any sourcemap, downgrade the warning to a debug log.
fix: #22199
fix: JS-3006
isaacs added a commit that referenced this pull request Jul 27, 2026
)
Prevent potentially large number of noisy warnings that by design never
emit sourcemaps.
For example:
```
~/b0f41f6b-e36f-409b-817f-921f7d295a7b-155.js (no sourcemap found, debug id b0f41f6b-...)
- warning: could not determine a source map reference (Could not auto-detect referenced sourcemap for ~/b0f41f6b-...-155.js)
```
This cannot be safely avoided using the file path glob approach, as seen
in #18938, because the file paths in question
here (uuids and alphanumeric hashes) can't be guaranteed to *never* hold
user code as seen in the cases covered by
#18938.
Instead, when no symbolication can be performed because the chunk is a
stub without any sourcemap, downgrade the warning to a debug log.
fix: #22199
Sign up for freeto join this conversation on GitHub. Already have an account? Sign in to comment

Labels

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Development

Successfully merging this pull request may close these issues.

[nextjs] Add option to suppress "could not determine source map reference" warnings for specific files

2 participants

@chargome@andreiborza
, '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

feat(nextjs): Update default ignore list for sourcemaps - #18938

Merged
chargome merged 4 commits into
developfrom
cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference
Jan 23, 2026
Merged

feat(nextjs): Update default ignore list for sourcemaps#18938
chargome merged 4 commits into
developfrom
cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference

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  • adds more framework internals to the default ignore list (these will never emit sourcemaps and we just waste time processing these files)
  • updates ignore list to use glob patterns as this is the only way the cli properly picks them up

closes#18872

@chargomechargome self-assigned this Jan 22, 2026
@linear

linearBot commented Jan 22, 2026

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@chargome
chargome marked this pull request as ready for review January 22, 2026 12:29
cursor[bot]

This comment was marked as outdated.

Comment on lines +35 to +46
MAIN_CHUNKS: '**/main-*',
FRAMEWORK_CHUNKS: '**/framework-*',
FRAMEWORK_CHUNKS_DOT: '**/framework.*',
POLYFILLS_CHUNKS: '**/polyfills-*',
WEBPACK_CHUNKS: '**/webpack-*',
PAGE_CLIENT_REFERENCE_MANIFEST: '**/page_client-reference-manifest.js',
SERVER_REFERENCE_MANIFEST: '**/server-reference-manifest.js',
NEXT_FONT_MANIFEST: '**/next-font-manifest.js',
MIDDLEWARE_BUILD_MANIFEST: '**/middleware-build-manifest.js',
INTERCEPTION_ROUTE_REWRITE_MANIFEST: '**/interception-route-rewrite-manifest.js',
ROUTE_CLIENT_REFERENCE_MANIFEST: '**/route_client-reference-manifest.js',
MIDDLEWARE_REACT_LOADABLE_MANIFEST: '**/middleware-react-loadable-manifest.js',

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h: We need to ensure these are not too widely applied. The way it is now, these ignore patterns are also passed to the server source maps which might lead to false positives and ignore files we don't want to ignore.

We need a way to distinguish between which patterns we pass to which commands.

Copy link
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MemberAuthor

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I reverted the changes for all framework, polyfills etc. and just kept the manifest ones for now. We need to investigate if we can split up the upload calls or be smarter here. Also with turbopack there are likely more files we can ignore

Comment threadpackages/nextjs/src/config/getBuildPluginOptions.ts

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.

'**/route_client-reference-manifest.js',
'**/middleware-react-loadable-manifest.js',
'**/vendor/**',
]);

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Missing integration or E2E test for feature PR

Low Severity · Bugbot Rules

This feat PR changes the sourcemap ignore pattern behavior (merging user patterns with defaults instead of replacing) but only includes unit tests. Per the review rules: "When reviewing a feat PR, check if the PR includes at least one integration or E2E test. If neither of the two are present, add a comment, recommending to add one." An integration test verifying the actual sourcemap upload/ignore behavior with the new merged patterns would help ensure the feature works correctly in real build scenarios.

Fix in CursorFix in Web

@chargome
chargome merged commit bb40be1 into developJan 23, 2026
69 checks passed
@chargome
chargome deleted the cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference branch January 23, 2026 10:26
isaacs added a commit that referenced this pull request Jul 15, 2026
Prevent potentially large number of noisy warnings that by design never
emit sourcemaps.
For example:
```
~/b0f41f6b-e36f-409b-817f-921f7d295a7b-155.js (no sourcemap found, debug id b0f41f6b-...)
- warning: could not determine a source map reference (Could not auto-detect referenced sourcemap for ~/b0f41f6b-...-155.js)
```
This cannot be safely avoided using the file path glob approach, as seen
in #18938, because the file paths in question here (uuids and
alphanumeric hashes) can't be guaranteed to _never_ hold user code as
seen in the cases covered by #18938.
Instead, when no symbolication can be performed because the chunk is a
stub without any sourcemap, downgrade the warning to a debug log.
fix: #22199
fix: JS-3006
isaacs added a commit that referenced this pull request Jul 27, 2026
)
Prevent potentially large number of noisy warnings that by design never
emit sourcemaps.
For example:
```
~/b0f41f6b-e36f-409b-817f-921f7d295a7b-155.js (no sourcemap found, debug id b0f41f6b-...)
- warning: could not determine a source map reference (Could not auto-detect referenced sourcemap for ~/b0f41f6b-...-155.js)
```
This cannot be safely avoided using the file path glob approach, as seen
in #18938, because the file paths in question
here (uuids and alphanumeric hashes) can't be guaranteed to *never* hold
user code as seen in the cases covered by
#18938.
Instead, when no symbolication can be performed because the chunk is a
stub without any sourcemap, downgrade the warning to a debug log.
fix: #22199
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[nextjs] Add option to suppress "could not determine source map reference" warnings for specific files

2 participants

@chargome@andreiborza
, '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" + '
Skip to content

feat(nextjs): Update default ignore list for sourcemaps - #18938

Merged
chargome merged 4 commits into
developfrom
cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference
Jan 23, 2026
Merged

feat(nextjs): Update default ignore list for sourcemaps#18938
chargome merged 4 commits into
developfrom
cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference

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  • adds more framework internals to the default ignore list (these will never emit sourcemaps and we just waste time processing these files)
  • updates ignore list to use glob patterns as this is the only way the cli properly picks them up

closes#18872

@chargomechargome self-assigned this Jan 22, 2026
@linear

linearBot commented Jan 22, 2026

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chargome marked this pull request as ready for review January 22, 2026 12:29
cursor[bot]

This comment was marked as outdated.

Comment on lines +35 to +46
MAIN_CHUNKS: '**/main-*',
FRAMEWORK_CHUNKS: '**/framework-*',
FRAMEWORK_CHUNKS_DOT: '**/framework.*',
POLYFILLS_CHUNKS: '**/polyfills-*',
WEBPACK_CHUNKS: '**/webpack-*',
PAGE_CLIENT_REFERENCE_MANIFEST: '**/page_client-reference-manifest.js',
SERVER_REFERENCE_MANIFEST: '**/server-reference-manifest.js',
NEXT_FONT_MANIFEST: '**/next-font-manifest.js',
MIDDLEWARE_BUILD_MANIFEST: '**/middleware-build-manifest.js',
INTERCEPTION_ROUTE_REWRITE_MANIFEST: '**/interception-route-rewrite-manifest.js',
ROUTE_CLIENT_REFERENCE_MANIFEST: '**/route_client-reference-manifest.js',
MIDDLEWARE_REACT_LOADABLE_MANIFEST: '**/middleware-react-loadable-manifest.js',

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h: We need to ensure these are not too widely applied. The way it is now, these ignore patterns are also passed to the server source maps which might lead to false positives and ignore files we don't want to ignore.

We need a way to distinguish between which patterns we pass to which commands.

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I reverted the changes for all framework, polyfills etc. and just kept the manifest ones for now. We need to investigate if we can split up the upload calls or be smarter here. Also with turbopack there are likely more files we can ignore

Comment threadpackages/nextjs/src/config/getBuildPluginOptions.ts

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.

'**/route_client-reference-manifest.js',
'**/middleware-react-loadable-manifest.js',
'**/vendor/**',
]);

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Missing integration or E2E test for feature PR

Low Severity · Bugbot Rules

This feat PR changes the sourcemap ignore pattern behavior (merging user patterns with defaults instead of replacing) but only includes unit tests. Per the review rules: "When reviewing a feat PR, check if the PR includes at least one integration or E2E test. If neither of the two are present, add a comment, recommending to add one." An integration test verifying the actual sourcemap upload/ignore behavior with the new merged patterns would help ensure the feature works correctly in real build scenarios.

Fix in CursorFix in Web

@chargome
chargome merged commit bb40be1 into developJan 23, 2026
69 checks passed
@chargome
chargome deleted the cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference branch January 23, 2026 10:26
isaacs added a commit that referenced this pull request Jul 15, 2026
Prevent potentially large number of noisy warnings that by design never
emit sourcemaps.
For example:
```
~/b0f41f6b-e36f-409b-817f-921f7d295a7b-155.js (no sourcemap found, debug id b0f41f6b-...)
- warning: could not determine a source map reference (Could not auto-detect referenced sourcemap for ~/b0f41f6b-...-155.js)
```
This cannot be safely avoided using the file path glob approach, as seen
in #18938, because the file paths in question here (uuids and
alphanumeric hashes) can't be guaranteed to _never_ hold user code as
seen in the cases covered by #18938.
Instead, when no symbolication can be performed because the chunk is a
stub without any sourcemap, downgrade the warning to a debug log.
fix: #22199
fix: JS-3006
isaacs added a commit that referenced this pull request Jul 27, 2026
)
Prevent potentially large number of noisy warnings that by design never
emit sourcemaps.
For example:
```
~/b0f41f6b-e36f-409b-817f-921f7d295a7b-155.js (no sourcemap found, debug id b0f41f6b-...)
- warning: could not determine a source map reference (Could not auto-detect referenced sourcemap for ~/b0f41f6b-...-155.js)
```
This cannot be safely avoided using the file path glob approach, as seen
in #18938, because the file paths in question
here (uuids and alphanumeric hashes) can't be guaranteed to *never* hold
user code as seen in the cases covered by
#18938.
Instead, when no symbolication can be performed because the chunk is a
stub without any sourcemap, downgrade the warning to a debug log.
fix: #22199
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Successfully merging this pull request may close these issues.

[nextjs] Add option to suppress "could not determine source map reference" warnings for specific files

2 participants

@chargome@andreiborza
, '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

feat(nextjs): Update default ignore list for sourcemaps - #18938

Merged
chargome merged 4 commits into
developfrom
cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference
Jan 23, 2026
Merged

feat(nextjs): Update default ignore list for sourcemaps#18938
chargome merged 4 commits into
developfrom
cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference

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  • adds more framework internals to the default ignore list (these will never emit sourcemaps and we just waste time processing these files)
  • updates ignore list to use glob patterns as this is the only way the cli properly picks them up

closes#18872

@chargomechargome self-assigned this Jan 22, 2026
@linear

linearBot commented Jan 22, 2026

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@chargome
chargome marked this pull request as ready for review January 22, 2026 12:29
cursor[bot]

This comment was marked as outdated.

Comment on lines +35 to +46
MAIN_CHUNKS: '**/main-*',
FRAMEWORK_CHUNKS: '**/framework-*',
FRAMEWORK_CHUNKS_DOT: '**/framework.*',
POLYFILLS_CHUNKS: '**/polyfills-*',
WEBPACK_CHUNKS: '**/webpack-*',
PAGE_CLIENT_REFERENCE_MANIFEST: '**/page_client-reference-manifest.js',
SERVER_REFERENCE_MANIFEST: '**/server-reference-manifest.js',
NEXT_FONT_MANIFEST: '**/next-font-manifest.js',
MIDDLEWARE_BUILD_MANIFEST: '**/middleware-build-manifest.js',
INTERCEPTION_ROUTE_REWRITE_MANIFEST: '**/interception-route-rewrite-manifest.js',
ROUTE_CLIENT_REFERENCE_MANIFEST: '**/route_client-reference-manifest.js',
MIDDLEWARE_REACT_LOADABLE_MANIFEST: '**/middleware-react-loadable-manifest.js',

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h: We need to ensure these are not too widely applied. The way it is now, these ignore patterns are also passed to the server source maps which might lead to false positives and ignore files we don't want to ignore.

We need a way to distinguish between which patterns we pass to which commands.

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MemberAuthor

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I reverted the changes for all framework, polyfills etc. and just kept the manifest ones for now. We need to investigate if we can split up the upload calls or be smarter here. Also with turbopack there are likely more files we can ignore

Comment threadpackages/nextjs/src/config/getBuildPluginOptions.ts

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.

'**/route_client-reference-manifest.js',
'**/middleware-react-loadable-manifest.js',
'**/vendor/**',
]);

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Missing integration or E2E test for feature PR

Low Severity · Bugbot Rules

This feat PR changes the sourcemap ignore pattern behavior (merging user patterns with defaults instead of replacing) but only includes unit tests. Per the review rules: "When reviewing a feat PR, check if the PR includes at least one integration or E2E test. If neither of the two are present, add a comment, recommending to add one." An integration test verifying the actual sourcemap upload/ignore behavior with the new merged patterns would help ensure the feature works correctly in real build scenarios.

Fix in CursorFix in Web

@chargome
chargome merged commit bb40be1 into developJan 23, 2026
69 checks passed
@chargome
chargome deleted the cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference branch January 23, 2026 10:26
isaacs added a commit that referenced this pull request Jul 15, 2026
Prevent potentially large number of noisy warnings that by design never
emit sourcemaps.
For example:
```
~/b0f41f6b-e36f-409b-817f-921f7d295a7b-155.js (no sourcemap found, debug id b0f41f6b-...)
- warning: could not determine a source map reference (Could not auto-detect referenced sourcemap for ~/b0f41f6b-...-155.js)
```
This cannot be safely avoided using the file path glob approach, as seen
in #18938, because the file paths in question here (uuids and
alphanumeric hashes) can't be guaranteed to _never_ hold user code as
seen in the cases covered by #18938.
Instead, when no symbolication can be performed because the chunk is a
stub without any sourcemap, downgrade the warning to a debug log.
fix: #22199
fix: JS-3006
isaacs added a commit that referenced this pull request Jul 27, 2026
)
Prevent potentially large number of noisy warnings that by design never
emit sourcemaps.
For example:
```
~/b0f41f6b-e36f-409b-817f-921f7d295a7b-155.js (no sourcemap found, debug id b0f41f6b-...)
- warning: could not determine a source map reference (Could not auto-detect referenced sourcemap for ~/b0f41f6b-...-155.js)
```
This cannot be safely avoided using the file path glob approach, as seen
in #18938, because the file paths in question
here (uuids and alphanumeric hashes) can't be guaranteed to *never* hold
user code as seen in the cases covered by
#18938.
Instead, when no symbolication can be performed because the chunk is a
stub without any sourcemap, downgrade the warning to a debug log.
fix: #22199
Sign up for freeto join this conversation on GitHub. Already have an account? Sign in to comment

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Successfully merging this pull request may close these issues.

[nextjs] Add option to suppress "could not determine source map reference" warnings for specific files

2 participants

@chargome@andreiborza
, '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

feat(nextjs): Update default ignore list for sourcemaps - #18938

Merged
chargome merged 4 commits into
developfrom
cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference
Jan 23, 2026
Merged

feat(nextjs): Update default ignore list for sourcemaps#18938
chargome merged 4 commits into
developfrom
cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference

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  • adds more framework internals to the default ignore list (these will never emit sourcemaps and we just waste time processing these files)
  • updates ignore list to use glob patterns as this is the only way the cli properly picks them up

closes#18872

@chargomechargome self-assigned this Jan 22, 2026
@linear

linearBot commented Jan 22, 2026

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@chargome
chargome marked this pull request as ready for review January 22, 2026 12:29
cursor[bot]

This comment was marked as outdated.

Comment on lines +35 to +46
MAIN_CHUNKS: '**/main-*',
FRAMEWORK_CHUNKS: '**/framework-*',
FRAMEWORK_CHUNKS_DOT: '**/framework.*',
POLYFILLS_CHUNKS: '**/polyfills-*',
WEBPACK_CHUNKS: '**/webpack-*',
PAGE_CLIENT_REFERENCE_MANIFEST: '**/page_client-reference-manifest.js',
SERVER_REFERENCE_MANIFEST: '**/server-reference-manifest.js',
NEXT_FONT_MANIFEST: '**/next-font-manifest.js',
MIDDLEWARE_BUILD_MANIFEST: '**/middleware-build-manifest.js',
INTERCEPTION_ROUTE_REWRITE_MANIFEST: '**/interception-route-rewrite-manifest.js',
ROUTE_CLIENT_REFERENCE_MANIFEST: '**/route_client-reference-manifest.js',
MIDDLEWARE_REACT_LOADABLE_MANIFEST: '**/middleware-react-loadable-manifest.js',

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h: We need to ensure these are not too widely applied. The way it is now, these ignore patterns are also passed to the server source maps which might lead to false positives and ignore files we don't want to ignore.

We need a way to distinguish between which patterns we pass to which commands.

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MemberAuthor

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I reverted the changes for all framework, polyfills etc. and just kept the manifest ones for now. We need to investigate if we can split up the upload calls or be smarter here. Also with turbopack there are likely more files we can ignore

Comment threadpackages/nextjs/src/config/getBuildPluginOptions.ts

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.

'**/route_client-reference-manifest.js',
'**/middleware-react-loadable-manifest.js',
'**/vendor/**',
]);

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Missing integration or E2E test for feature PR

Low Severity · Bugbot Rules

This feat PR changes the sourcemap ignore pattern behavior (merging user patterns with defaults instead of replacing) but only includes unit tests. Per the review rules: "When reviewing a feat PR, check if the PR includes at least one integration or E2E test. If neither of the two are present, add a comment, recommending to add one." An integration test verifying the actual sourcemap upload/ignore behavior with the new merged patterns would help ensure the feature works correctly in real build scenarios.

Fix in CursorFix in Web

@chargome
chargome merged commit bb40be1 into developJan 23, 2026
69 checks passed
@chargome
chargome deleted the cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference branch January 23, 2026 10:26
isaacs added a commit that referenced this pull request Jul 15, 2026
Prevent potentially large number of noisy warnings that by design never
emit sourcemaps.
For example:
```
~/b0f41f6b-e36f-409b-817f-921f7d295a7b-155.js (no sourcemap found, debug id b0f41f6b-...)
- warning: could not determine a source map reference (Could not auto-detect referenced sourcemap for ~/b0f41f6b-...-155.js)
```
This cannot be safely avoided using the file path glob approach, as seen
in #18938, because the file paths in question here (uuids and
alphanumeric hashes) can't be guaranteed to _never_ hold user code as
seen in the cases covered by #18938.
Instead, when no symbolication can be performed because the chunk is a
stub without any sourcemap, downgrade the warning to a debug log.
fix: #22199
fix: JS-3006
isaacs added a commit that referenced this pull request Jul 27, 2026
)
Prevent potentially large number of noisy warnings that by design never
emit sourcemaps.
For example:
```
~/b0f41f6b-e36f-409b-817f-921f7d295a7b-155.js (no sourcemap found, debug id b0f41f6b-...)
- warning: could not determine a source map reference (Could not auto-detect referenced sourcemap for ~/b0f41f6b-...-155.js)
```
This cannot be safely avoided using the file path glob approach, as seen
in #18938, because the file paths in question
here (uuids and alphanumeric hashes) can't be guaranteed to *never* hold
user code as seen in the cases covered by
#18938.
Instead, when no symbolication can be performed because the chunk is a
stub without any sourcemap, downgrade the warning to a debug log.
fix: #22199
Sign up for freeto join this conversation on GitHub. Already have an account? Sign in to comment

Labels

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Development

Successfully merging this pull request may close these issues.

[nextjs] Add option to suppress "could not determine source map reference" warnings for specific files

2 participants

@chargome@andreiborza
, '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); } })(); })();
Skip to content

feat(nextjs): Update default ignore list for sourcemaps - #18938

Merged
chargome merged 4 commits into
developfrom
cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference
Jan 23, 2026
Merged

feat(nextjs): Update default ignore list for sourcemaps#18938
chargome merged 4 commits into
developfrom
cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference

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  • adds more framework internals to the default ignore list (these will never emit sourcemaps and we just waste time processing these files)
  • updates ignore list to use glob patterns as this is the only way the cli properly picks them up

closes#18872

@chargomechargome self-assigned this Jan 22, 2026
@linear

linearBot commented Jan 22, 2026

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@chargome
chargome marked this pull request as ready for review January 22, 2026 12:29
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Comment on lines +35 to +46
MAIN_CHUNKS: '**/main-*',
FRAMEWORK_CHUNKS: '**/framework-*',
FRAMEWORK_CHUNKS_DOT: '**/framework.*',
POLYFILLS_CHUNKS: '**/polyfills-*',
WEBPACK_CHUNKS: '**/webpack-*',
PAGE_CLIENT_REFERENCE_MANIFEST: '**/page_client-reference-manifest.js',
SERVER_REFERENCE_MANIFEST: '**/server-reference-manifest.js',
NEXT_FONT_MANIFEST: '**/next-font-manifest.js',
MIDDLEWARE_BUILD_MANIFEST: '**/middleware-build-manifest.js',
INTERCEPTION_ROUTE_REWRITE_MANIFEST: '**/interception-route-rewrite-manifest.js',
ROUTE_CLIENT_REFERENCE_MANIFEST: '**/route_client-reference-manifest.js',
MIDDLEWARE_REACT_LOADABLE_MANIFEST: '**/middleware-react-loadable-manifest.js',

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h: We need to ensure these are not too widely applied. The way it is now, these ignore patterns are also passed to the server source maps which might lead to false positives and ignore files we don't want to ignore.

We need a way to distinguish between which patterns we pass to which commands.

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I reverted the changes for all framework, polyfills etc. and just kept the manifest ones for now. We need to investigate if we can split up the upload calls or be smarter here. Also with turbopack there are likely more files we can ignore

Comment threadpackages/nextjs/src/config/getBuildPluginOptions.ts

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.

'**/route_client-reference-manifest.js',
'**/middleware-react-loadable-manifest.js',
'**/vendor/**',
]);

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Missing integration or E2E test for feature PR

Low Severity · Bugbot Rules

This feat PR changes the sourcemap ignore pattern behavior (merging user patterns with defaults instead of replacing) but only includes unit tests. Per the review rules: "When reviewing a feat PR, check if the PR includes at least one integration or E2E test. If neither of the two are present, add a comment, recommending to add one." An integration test verifying the actual sourcemap upload/ignore behavior with the new merged patterns would help ensure the feature works correctly in real build scenarios.

Fix in CursorFix in Web

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chargome merged commit bb40be1 into developJan 23, 2026
69 checks passed
@chargome
chargome deleted the cg/JS-1501/nextjs-add-option-to-suppress-could-not-determine-source-map-reference branch January 23, 2026 10:26
isaacs added a commit that referenced this pull request Jul 15, 2026
Prevent potentially large number of noisy warnings that by design never
emit sourcemaps.
For example:
```
~/b0f41f6b-e36f-409b-817f-921f7d295a7b-155.js (no sourcemap found, debug id b0f41f6b-...)
- warning: could not determine a source map reference (Could not auto-detect referenced sourcemap for ~/b0f41f6b-...-155.js)
```
This cannot be safely avoided using the file path glob approach, as seen
in #18938, because the file paths in question here (uuids and
alphanumeric hashes) can't be guaranteed to _never_ hold user code as
seen in the cases covered by #18938.
Instead, when no symbolication can be performed because the chunk is a
stub without any sourcemap, downgrade the warning to a debug log.
fix: #22199
fix: JS-3006
isaacs added a commit that referenced this pull request Jul 27, 2026
)
Prevent potentially large number of noisy warnings that by design never
emit sourcemaps.
For example:
```
~/b0f41f6b-e36f-409b-817f-921f7d295a7b-155.js (no sourcemap found, debug id b0f41f6b-...)
- warning: could not determine a source map reference (Could not auto-detect referenced sourcemap for ~/b0f41f6b-...-155.js)
```
This cannot be safely avoided using the file path glob approach, as seen
in #18938, because the file paths in question
here (uuids and alphanumeric hashes) can't be guaranteed to *never* hold
user code as seen in the cases covered by
#18938.
Instead, when no symbolication can be performed because the chunk is a
stub without any sourcemap, downgrade the warning to a debug log.
fix: #22199
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[nextjs] Add option to suppress "could not determine source map reference" warnings for specific files

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@chargome@andreiborza