fix(clerk-js): Revert query filtering from fapiClient#6817

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fix(clerk-js): Revert query filtering from fapiClient #6817

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2 changes: 2 additions & 0 deletions .changeset/blue-oranges-make.md
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@@ -0,0 +1,2 @@
---
---
Comment on lines +1 to +2

@coderabbitaicoderabbitaiBotSep 19, 2025

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⚠️ Potential issue

Missing changeset content.

The changeset file is empty and should include package names and descriptions of changes.

A valid changeset should follow this format:

---+"@clerk/clerk-js": patch---++Revert query filtering from fapiClient - no longer filter undefined properties before building query parameters.
📝 Committable suggestion

‼️IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
---
---
---
"@clerk/clerk-js": patch
---
Revert query filtering from fapiClient - no longer filter undefined properties before building query parameters.
🤖 Prompt for AI Agents
In .changeset/blue-oranges-make.md around lines 1 to 2, the changeset file is
empty; replace the placeholder with a valid changeset YAML block that lists the
affected package(s) and a short summary of the change(s). Specifically, add the
top-level version bump type for each package (patch/minor/major) as keys and a
brief human-readable description under the body (wrap text as needed), following
the standard Changesets format: a header mapping package names to release types,
a divider line of "---", and then the description paragraph(s).

15 changes: 1 addition & 14 deletions packages/clerk-js/src/core/fapiClient.ts
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -105,20 +105,7 @@ export function createFapiClient(options: FapiClientOptions): FapiClient {
}

function buildQueryString({ method, path, sessionId, search, rotatingTokenNonce }: FapiRequestInit): string {
const filteredSearch =
search && typeof search === 'object'
? Object.keys(search as Record<string, any>).reduce(
(acc, key) => {
const value = (search as Record<string, any>)[key];
if (value !== undefined) {
acc[key] = value;
}
return acc;
},
{} as Record<string, any>,
)
: search;
const searchParams = new URLSearchParams(filteredSearch as any);
const searchParams = new URLSearchParams(search as any);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
Comment on lines +108 to 109

@coderabbitaicoderabbitaiBotSep 19, 2025

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⚠️ Potential issue

🧩 Analysis chain

Potential issue with undefined values in URLSearchParams.

The URLSearchParams constructor will stringify undefined values as "undefined" strings rather than omitting them, which could result in query parameters like ?param=undefined being sent to the API.

Run this script to check how undefined values are handled across the codebase:

Consider filtering undefined values before passing to URLSearchParams:

 function buildQueryString({ method, path, sessionId, search, rotatingTokenNonce }: FapiRequestInit): string {
- const searchParams = new URLSearchParams(search as any);+ // Filter out undefined values to prevent them from being stringified as "undefined"+ const filteredSearch = search && typeof search === 'object' && !Array.isArray(search) + ? Object.fromEntries(Object.entries(search).filter(([_, v]) => v !== undefined))+ : search;+ const searchParams = new URLSearchParams(filteredSearch as any);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow

🏁 Script executed:

#!/bin/bash# Description: Check how search parameters are constructed and used throughout the codebase# Find places where search parameters are constructed or passed to fapiClient
rg -nP -C3 --type=ts --type=js 'search\s*:\s*[^,}]+'| head -20
# Look for undefined handling in query construction
ast-grep --pattern $'buildQueryString($_)'# Check for any existing undefined filtering patterns
rg -nP 'undefined.*filter|filter.*undefined' --type=ts --type=js

Length of output: 2436

Filter out undefined search params before instantiating URLSearchParams
The URLSearchParams constructor stringifies undefined to "undefined", which will produce queries like ?param=undefined. In buildQueryString, add a step to remove undefined values before creating URLSearchParams:

 function buildQueryString({ search, ... }: FapiRequestInit): string {
- const searchParams = new URLSearchParams(search as any);+ const filteredSearch = Object.fromEntries(+ Object.entries(search ?? {}).filter(([, v]) => v !== undefined)+ );+ const searchParams = new URLSearchParams(filteredSearch as any);
// …recreate array values below…
📝 Committable suggestion

‼️IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
constsearchParams=newURLSearchParams(searchasany);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
functionbuildQueryString({ search, ... }: FapiRequestInit): string{
constfilteredSearch=Object.fromEntries(
Object.entries(search??{}).filter(([,v])=>v!==undefined)
);
constsearchParams=newURLSearchParams(filteredSearchasany);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
🤖 Prompt for AI Agents
In packages/clerk-js/src/core/fapiClient.ts around lines 108-109, filter out
undefined values from the search object before creating URLSearchParams: iterate
keys of the search input, skip any key whose value is undefined, and for array
values create a new array with undefined entries removed (so arrays remain
arrays and not become "undefined" strings); then pass this cleaned object to new
URLSearchParams. Ensure you preserve non-array values and convert them to
strings only after removing undefined entries.


// Append supported FAPI version to the query string
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
fix(clerk-js): Revert query filtering from fapiClient#6817

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to your account

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commit into

from

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fix(clerk-js): Revert query filtering from fapiClient
#6817
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2 changes: 2 additions & 0 deletions
.changeset/blue-oranges-make.md

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,2 @@
---
---

Comment on lines

+1
 to 
+2

@coderabbitaicoderabbitaiBotSep 19, 2025

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⚠️ Potential issue
Missing changeset content.
The changeset file is empty and should include package names and descriptions of changes.
A valid changeset should follow this format:
---+"@clerk/clerk-js": patch---++Revert query filtering from fapiClient - no longer filter undefined properties before building query parameters.
📝 Committable suggestion
‼️IMPORTANT

Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

---
---
---
"@clerk/clerk-js": patch
---
Revert query filtering from fapiClient - no longer filter undefined properties before building query parameters.
🤖 Prompt for AI Agents
In .changeset/blue-oranges-make.md around lines 1 to 2, the changeset file is
empty; replace the placeholder with a valid changeset YAML block that lists the
affected package(s) and a short summary of the change(s). Specifically, add the
top-level version bump type for each package (patch/minor/major) as keys and a
brief human-readable description under the body (wrap text as needed), following
the standard Changesets format: a header mapping package names to release types,
a divider line of "---", and then the description paragraph(s).


15 changes: 1 addition & 14 deletions
packages/clerk-js/src/core/fapiClient.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -105,20 +105,7 @@ export function createFapiClient(options: FapiClientOptions): FapiClient {
 }

 function buildQueryString({ method, path, sessionId, search, rotatingTokenNonce }: FapiRequestInit): string {
 const filteredSearch =
 search && typeof search === 'object'
 ? Object.keys(search as Record<string, any>).reduce(
 (acc, key) => {
 const value = (search as Record<string, any>)[key];
 if (value !== undefined) {
 acc[key] = value;
 }
 return acc;
 },
 {} as Record<string, any>,
 )
 : search;
 const searchParams = new URLSearchParams(filteredSearch as any);
 const searchParams = new URLSearchParams(search as any);
 // the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow

Comment on lines

+108
 to 
109

@coderabbitaicoderabbitaiBotSep 19, 2025

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Choose a reason for hiding this comment

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⚠️ Potential issue
🧩 Analysis chain
Potential issue with undefined values in URLSearchParams.
The URLSearchParams constructor will stringify undefined values as "undefined" strings rather than omitting them, which could result in query parameters like ?param=undefined being sent to the API.
Run this script to check how undefined values are handled across the codebase:
Consider filtering undefined values before passing to URLSearchParams:
 function buildQueryString({ method, path, sessionId, search, rotatingTokenNonce }: FapiRequestInit): string {
- const searchParams = new URLSearchParams(search as any);+ // Filter out undefined values to prevent them from being stringified as "undefined"+ const filteredSearch = search && typeof search === 'object' && !Array.isArray(search) + ? Object.fromEntries(Object.entries(search).filter(([_, v]) => v !== undefined))+ : search;+ const searchParams = new URLSearchParams(filteredSearch as any);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
🏁 Script executed:
#!/bin/bash# Description: Check how search parameters are constructed and used throughout the codebase# Find places where search parameters are constructed or passed to fapiClient
rg -nP -C3 --type=ts --type=js 'search\s*:\s*[^,}]+'| head -20
# Look for undefined handling in query construction
ast-grep --pattern $'buildQueryString($_)'# Check for any existing undefined filtering patterns
rg -nP 'undefined.*filter|filter.*undefined' --type=ts --type=js
Length of output: 2436
Filter out undefined search params before instantiating URLSearchParams

The URLSearchParams constructor stringifies undefined to "undefined", which will produce queries like ?param=undefined. In buildQueryString, add a step to remove undefined values before creating URLSearchParams:
 function buildQueryString({ search, ... }: FapiRequestInit): string {
- const searchParams = new URLSearchParams(search as any);+ const filteredSearch = Object.fromEntries(+ Object.entries(search ?? {}).filter(([, v]) => v !== undefined)+ );+ const searchParams = new URLSearchParams(filteredSearch as any);
// …recreate array values below…
📝 Committable suggestion
‼️IMPORTANT

Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

constsearchParams=newURLSearchParams(searchasany);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
functionbuildQueryString({ search, ... }: FapiRequestInit): string{
constfilteredSearch=Object.fromEntries(
Object.entries(search??{}).filter(([,v])=>v!==undefined)
);
constsearchParams=newURLSearchParams(filteredSearchasany);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
🤖 Prompt for AI Agents
In packages/clerk-js/src/core/fapiClient.ts around lines 108-109, filter out
undefined values from the search object before creating URLSearchParams: iterate
keys of the search input, skip any key whose value is undefined, and for array
values create a new array with undefined entries removed (so arrays remain
arrays and not become "undefined" strings); then pass this cleaned object to new
URLSearchParams. Ensure you preserve non-array values and convert them to
strings only after removing undefined entries.


 // Append supported FAPI version to the query string
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
fix(clerk-js): Revert query filtering from fapiClient#6817

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

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Sign in
to your account

 Closed

panteliselef
wants to merge
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commit into

from

 Closed


fix(clerk-js): Revert query filtering from fapiClient
#6817
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2 changes: 2 additions & 0 deletions
.changeset/blue-oranges-make.md

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,2 @@
---
---

Comment on lines

+1
 to 
+2

@coderabbitaicoderabbitaiBotSep 19, 2025

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⚠️ Potential issue
Missing changeset content.
The changeset file is empty and should include package names and descriptions of changes.
A valid changeset should follow this format:
---+"@clerk/clerk-js": patch---++Revert query filtering from fapiClient - no longer filter undefined properties before building query parameters.
📝 Committable suggestion
‼️IMPORTANT

Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

---
---
---
"@clerk/clerk-js": patch
---
Revert query filtering from fapiClient - no longer filter undefined properties before building query parameters.
🤖 Prompt for AI Agents
In .changeset/blue-oranges-make.md around lines 1 to 2, the changeset file is
empty; replace the placeholder with a valid changeset YAML block that lists the
affected package(s) and a short summary of the change(s). Specifically, add the
top-level version bump type for each package (patch/minor/major) as keys and a
brief human-readable description under the body (wrap text as needed), following
the standard Changesets format: a header mapping package names to release types,
a divider line of "---", and then the description paragraph(s).


15 changes: 1 addition & 14 deletions
packages/clerk-js/src/core/fapiClient.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -105,20 +105,7 @@ export function createFapiClient(options: FapiClientOptions): FapiClient {
 }

 function buildQueryString({ method, path, sessionId, search, rotatingTokenNonce }: FapiRequestInit): string {
 const filteredSearch =
 search && typeof search === 'object'
 ? Object.keys(search as Record<string, any>).reduce(
 (acc, key) => {
 const value = (search as Record<string, any>)[key];
 if (value !== undefined) {
 acc[key] = value;
 }
 return acc;
 },
 {} as Record<string, any>,
 )
 : search;
 const searchParams = new URLSearchParams(filteredSearch as any);
 const searchParams = new URLSearchParams(search as any);
 // the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow

Comment on lines

+108
 to 
109

@coderabbitaicoderabbitaiBotSep 19, 2025

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⚠️ Potential issue
🧩 Analysis chain
Potential issue with undefined values in URLSearchParams.
The URLSearchParams constructor will stringify undefined values as "undefined" strings rather than omitting them, which could result in query parameters like ?param=undefined being sent to the API.
Run this script to check how undefined values are handled across the codebase:
Consider filtering undefined values before passing to URLSearchParams:
 function buildQueryString({ method, path, sessionId, search, rotatingTokenNonce }: FapiRequestInit): string {
- const searchParams = new URLSearchParams(search as any);+ // Filter out undefined values to prevent them from being stringified as "undefined"+ const filteredSearch = search && typeof search === 'object' && !Array.isArray(search) + ? Object.fromEntries(Object.entries(search).filter(([_, v]) => v !== undefined))+ : search;+ const searchParams = new URLSearchParams(filteredSearch as any);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
🏁 Script executed:
#!/bin/bash# Description: Check how search parameters are constructed and used throughout the codebase# Find places where search parameters are constructed or passed to fapiClient
rg -nP -C3 --type=ts --type=js 'search\s*:\s*[^,}]+'| head -20
# Look for undefined handling in query construction
ast-grep --pattern $'buildQueryString($_)'# Check for any existing undefined filtering patterns
rg -nP 'undefined.*filter|filter.*undefined' --type=ts --type=js
Length of output: 2436
Filter out undefined search params before instantiating URLSearchParams

The URLSearchParams constructor stringifies undefined to "undefined", which will produce queries like ?param=undefined. In buildQueryString, add a step to remove undefined values before creating URLSearchParams:
 function buildQueryString({ search, ... }: FapiRequestInit): string {
- const searchParams = new URLSearchParams(search as any);+ const filteredSearch = Object.fromEntries(+ Object.entries(search ?? {}).filter(([, v]) => v !== undefined)+ );+ const searchParams = new URLSearchParams(filteredSearch as any);
// …recreate array values below…
📝 Committable suggestion
‼️IMPORTANT

Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

constsearchParams=newURLSearchParams(searchasany);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
functionbuildQueryString({ search, ... }: FapiRequestInit): string{
constfilteredSearch=Object.fromEntries(
Object.entries(search??{}).filter(([,v])=>v!==undefined)
);
constsearchParams=newURLSearchParams(filteredSearchasany);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
🤖 Prompt for AI Agents
In packages/clerk-js/src/core/fapiClient.ts around lines 108-109, filter out
undefined values from the search object before creating URLSearchParams: iterate
keys of the search input, skip any key whose value is undefined, and for array
values create a new array with undefined entries removed (so arrays remain
arrays and not become "undefined" strings); then pass this cleaned object to new
URLSearchParams. Ensure you preserve non-array values and convert them to
strings only after removing undefined entries.


 // Append supported FAPI version to the query string
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
fix(clerk-js): Revert query filtering from fapiClient#6817

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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

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Sign in
to your account

 Closed

panteliselef
wants to merge
1
commit into

from

 Closed


fix(clerk-js): Revert query filtering from fapiClient
#6817
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2 changes: 2 additions & 0 deletions
.changeset/blue-oranges-make.md

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Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,2 @@
---
---

Comment on lines

+1
 to 
+2

@coderabbitaicoderabbitaiBotSep 19, 2025

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⚠️ Potential issue
Missing changeset content.
The changeset file is empty and should include package names and descriptions of changes.
A valid changeset should follow this format:
---+"@clerk/clerk-js": patch---++Revert query filtering from fapiClient - no longer filter undefined properties before building query parameters.
📝 Committable suggestion
‼️IMPORTANT

Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

---
---
---
"@clerk/clerk-js": patch
---
Revert query filtering from fapiClient - no longer filter undefined properties before building query parameters.
🤖 Prompt for AI Agents
In .changeset/blue-oranges-make.md around lines 1 to 2, the changeset file is
empty; replace the placeholder with a valid changeset YAML block that lists the
affected package(s) and a short summary of the change(s). Specifically, add the
top-level version bump type for each package (patch/minor/major) as keys and a
brief human-readable description under the body (wrap text as needed), following
the standard Changesets format: a header mapping package names to release types,
a divider line of "---", and then the description paragraph(s).


15 changes: 1 addition & 14 deletions
packages/clerk-js/src/core/fapiClient.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -105,20 +105,7 @@ export function createFapiClient(options: FapiClientOptions): FapiClient {
 }

 function buildQueryString({ method, path, sessionId, search, rotatingTokenNonce }: FapiRequestInit): string {
 const filteredSearch =
 search && typeof search === 'object'
 ? Object.keys(search as Record<string, any>).reduce(
 (acc, key) => {
 const value = (search as Record<string, any>)[key];
 if (value !== undefined) {
 acc[key] = value;
 }
 return acc;
 },
 {} as Record<string, any>,
 )
 : search;
 const searchParams = new URLSearchParams(filteredSearch as any);
 const searchParams = new URLSearchParams(search as any);
 // the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow

Comment on lines

+108
 to 
109

@coderabbitaicoderabbitaiBotSep 19, 2025

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⚠️ Potential issue
🧩 Analysis chain
Potential issue with undefined values in URLSearchParams.
The URLSearchParams constructor will stringify undefined values as "undefined" strings rather than omitting them, which could result in query parameters like ?param=undefined being sent to the API.
Run this script to check how undefined values are handled across the codebase:
Consider filtering undefined values before passing to URLSearchParams:
 function buildQueryString({ method, path, sessionId, search, rotatingTokenNonce }: FapiRequestInit): string {
- const searchParams = new URLSearchParams(search as any);+ // Filter out undefined values to prevent them from being stringified as "undefined"+ const filteredSearch = search && typeof search === 'object' && !Array.isArray(search) + ? Object.fromEntries(Object.entries(search).filter(([_, v]) => v !== undefined))+ : search;+ const searchParams = new URLSearchParams(filteredSearch as any);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
🏁 Script executed:
#!/bin/bash# Description: Check how search parameters are constructed and used throughout the codebase# Find places where search parameters are constructed or passed to fapiClient
rg -nP -C3 --type=ts --type=js 'search\s*:\s*[^,}]+'| head -20
# Look for undefined handling in query construction
ast-grep --pattern $'buildQueryString($_)'# Check for any existing undefined filtering patterns
rg -nP 'undefined.*filter|filter.*undefined' --type=ts --type=js
Length of output: 2436
Filter out undefined search params before instantiating URLSearchParams

The URLSearchParams constructor stringifies undefined to "undefined", which will produce queries like ?param=undefined. In buildQueryString, add a step to remove undefined values before creating URLSearchParams:
 function buildQueryString({ search, ... }: FapiRequestInit): string {
- const searchParams = new URLSearchParams(search as any);+ const filteredSearch = Object.fromEntries(+ Object.entries(search ?? {}).filter(([, v]) => v !== undefined)+ );+ const searchParams = new URLSearchParams(filteredSearch as any);
// …recreate array values below…
📝 Committable suggestion
‼️IMPORTANT

Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

constsearchParams=newURLSearchParams(searchasany);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
functionbuildQueryString({ search, ... }: FapiRequestInit): string{
constfilteredSearch=Object.fromEntries(
Object.entries(search??{}).filter(([,v])=>v!==undefined)
);
constsearchParams=newURLSearchParams(filteredSearchasany);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
🤖 Prompt for AI Agents
In packages/clerk-js/src/core/fapiClient.ts around lines 108-109, filter out
undefined values from the search object before creating URLSearchParams: iterate
keys of the search input, skip any key whose value is undefined, and for array
values create a new array with undefined entries removed (so arrays remain
arrays and not become "undefined" strings); then pass this cleaned object to new
URLSearchParams. Ensure you preserve non-array values and convert them to
strings only after removing undefined entries.


 // Append supported FAPI version to the query string
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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fix(clerk-js): Revert query filtering from fapiClient#6817

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fix(clerk-js): Revert query filtering from fapiClient
#6817
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2 changes: 2 additions & 0 deletions
.changeset/blue-oranges-make.md

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,2 @@
---
---

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+2

@coderabbitaicoderabbitaiBotSep 19, 2025

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⚠️ Potential issue
Missing changeset content.
The changeset file is empty and should include package names and descriptions of changes.
A valid changeset should follow this format:
---+"@clerk/clerk-js": patch---++Revert query filtering from fapiClient - no longer filter undefined properties before building query parameters.
📝 Committable suggestion
‼️IMPORTANT

Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

---
---
---
"@clerk/clerk-js": patch
---
Revert query filtering from fapiClient - no longer filter undefined properties before building query parameters.
🤖 Prompt for AI Agents
In .changeset/blue-oranges-make.md around lines 1 to 2, the changeset file is
empty; replace the placeholder with a valid changeset YAML block that lists the
affected package(s) and a short summary of the change(s). Specifically, add the
top-level version bump type for each package (patch/minor/major) as keys and a
brief human-readable description under the body (wrap text as needed), following
the standard Changesets format: a header mapping package names to release types,
a divider line of "---", and then the description paragraph(s).


15 changes: 1 addition & 14 deletions
packages/clerk-js/src/core/fapiClient.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -105,20 +105,7 @@ export function createFapiClient(options: FapiClientOptions): FapiClient {
 }

 function buildQueryString({ method, path, sessionId, search, rotatingTokenNonce }: FapiRequestInit): string {
 const filteredSearch =
 search && typeof search === 'object'
 ? Object.keys(search as Record<string, any>).reduce(
 (acc, key) => {
 const value = (search as Record<string, any>)[key];
 if (value !== undefined) {
 acc[key] = value;
 }
 return acc;
 },
 {} as Record<string, any>,
 )
 : search;
 const searchParams = new URLSearchParams(filteredSearch as any);
 const searchParams = new URLSearchParams(search as any);
 // the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow

Comment on lines

+108
 to 
109

@coderabbitaicoderabbitaiBotSep 19, 2025

Copy link


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Contributor
Choose a reason for hiding this comment

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⚠️ Potential issue
🧩 Analysis chain
Potential issue with undefined values in URLSearchParams.
The URLSearchParams constructor will stringify undefined values as "undefined" strings rather than omitting them, which could result in query parameters like ?param=undefined being sent to the API.
Run this script to check how undefined values are handled across the codebase:
Consider filtering undefined values before passing to URLSearchParams:
 function buildQueryString({ method, path, sessionId, search, rotatingTokenNonce }: FapiRequestInit): string {
- const searchParams = new URLSearchParams(search as any);+ // Filter out undefined values to prevent them from being stringified as "undefined"+ const filteredSearch = search && typeof search === 'object' && !Array.isArray(search) + ? Object.fromEntries(Object.entries(search).filter(([_, v]) => v !== undefined))+ : search;+ const searchParams = new URLSearchParams(filteredSearch as any);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
🏁 Script executed:
#!/bin/bash# Description: Check how search parameters are constructed and used throughout the codebase# Find places where search parameters are constructed or passed to fapiClient
rg -nP -C3 --type=ts --type=js 'search\s*:\s*[^,}]+'| head -20
# Look for undefined handling in query construction
ast-grep --pattern $'buildQueryString($_)'# Check for any existing undefined filtering patterns
rg -nP 'undefined.*filter|filter.*undefined' --type=ts --type=js
Length of output: 2436
Filter out undefined search params before instantiating URLSearchParams

The URLSearchParams constructor stringifies undefined to "undefined", which will produce queries like ?param=undefined. In buildQueryString, add a step to remove undefined values before creating URLSearchParams:
 function buildQueryString({ search, ... }: FapiRequestInit): string {
- const searchParams = new URLSearchParams(search as any);+ const filteredSearch = Object.fromEntries(+ Object.entries(search ?? {}).filter(([, v]) => v !== undefined)+ );+ const searchParams = new URLSearchParams(filteredSearch as any);
// …recreate array values below…
📝 Committable suggestion
‼️IMPORTANT

Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

constsearchParams=newURLSearchParams(searchasany);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
functionbuildQueryString({ search, ... }: FapiRequestInit): string{
constfilteredSearch=Object.fromEntries(
Object.entries(search??{}).filter(([,v])=>v!==undefined)
);
constsearchParams=newURLSearchParams(filteredSearchasany);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
🤖 Prompt for AI Agents
In packages/clerk-js/src/core/fapiClient.ts around lines 108-109, filter out
undefined values from the search object before creating URLSearchParams: iterate
keys of the search input, skip any key whose value is undefined, and for array
values create a new array with undefined entries removed (so arrays remain
arrays and not become "undefined" strings); then pass this cleaned object to new
URLSearchParams. Ensure you preserve non-array values and convert them to
strings only after removing undefined entries.


 // Append supported FAPI version to the query string
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
fix(clerk-js): Revert query filtering from fapiClient#6817

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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to your account

 Closed

panteliselef
wants to merge
1
commit into

from

 Closed


fix(clerk-js): Revert query filtering from fapiClient
#6817
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2 changes: 2 additions & 0 deletions
.changeset/blue-oranges-make.md

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Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,2 @@
---
---

Comment on lines

+1
 to 
+2

@coderabbitaicoderabbitaiBotSep 19, 2025

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Contributor
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⚠️ Potential issue
Missing changeset content.
The changeset file is empty and should include package names and descriptions of changes.
A valid changeset should follow this format:
---+"@clerk/clerk-js": patch---++Revert query filtering from fapiClient - no longer filter undefined properties before building query parameters.
📝 Committable suggestion
‼️IMPORTANT

Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

---
---
---
"@clerk/clerk-js": patch
---
Revert query filtering from fapiClient - no longer filter undefined properties before building query parameters.
🤖 Prompt for AI Agents
In .changeset/blue-oranges-make.md around lines 1 to 2, the changeset file is
empty; replace the placeholder with a valid changeset YAML block that lists the
affected package(s) and a short summary of the change(s). Specifically, add the
top-level version bump type for each package (patch/minor/major) as keys and a
brief human-readable description under the body (wrap text as needed), following
the standard Changesets format: a header mapping package names to release types,
a divider line of "---", and then the description paragraph(s).


15 changes: 1 addition & 14 deletions
packages/clerk-js/src/core/fapiClient.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -105,20 +105,7 @@ export function createFapiClient(options: FapiClientOptions): FapiClient {
 }

 function buildQueryString({ method, path, sessionId, search, rotatingTokenNonce }: FapiRequestInit): string {
 const filteredSearch =
 search && typeof search === 'object'
 ? Object.keys(search as Record<string, any>).reduce(
 (acc, key) => {
 const value = (search as Record<string, any>)[key];
 if (value !== undefined) {
 acc[key] = value;
 }
 return acc;
 },
 {} as Record<string, any>,
 )
 : search;
 const searchParams = new URLSearchParams(filteredSearch as any);
 const searchParams = new URLSearchParams(search as any);
 // the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow

Comment on lines

+108
 to 
109

@coderabbitaicoderabbitaiBotSep 19, 2025

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Contributor
Choose a reason for hiding this comment

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⚠️ Potential issue
🧩 Analysis chain
Potential issue with undefined values in URLSearchParams.
The URLSearchParams constructor will stringify undefined values as "undefined" strings rather than omitting them, which could result in query parameters like ?param=undefined being sent to the API.
Run this script to check how undefined values are handled across the codebase:
Consider filtering undefined values before passing to URLSearchParams:
 function buildQueryString({ method, path, sessionId, search, rotatingTokenNonce }: FapiRequestInit): string {
- const searchParams = new URLSearchParams(search as any);+ // Filter out undefined values to prevent them from being stringified as "undefined"+ const filteredSearch = search && typeof search === 'object' && !Array.isArray(search) + ? Object.fromEntries(Object.entries(search).filter(([_, v]) => v !== undefined))+ : search;+ const searchParams = new URLSearchParams(filteredSearch as any);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
🏁 Script executed:
#!/bin/bash# Description: Check how search parameters are constructed and used throughout the codebase# Find places where search parameters are constructed or passed to fapiClient
rg -nP -C3 --type=ts --type=js 'search\s*:\s*[^,}]+'| head -20
# Look for undefined handling in query construction
ast-grep --pattern $'buildQueryString($_)'# Check for any existing undefined filtering patterns
rg -nP 'undefined.*filter|filter.*undefined' --type=ts --type=js
Length of output: 2436
Filter out undefined search params before instantiating URLSearchParams

The URLSearchParams constructor stringifies undefined to "undefined", which will produce queries like ?param=undefined. In buildQueryString, add a step to remove undefined values before creating URLSearchParams:
 function buildQueryString({ search, ... }: FapiRequestInit): string {
- const searchParams = new URLSearchParams(search as any);+ const filteredSearch = Object.fromEntries(+ Object.entries(search ?? {}).filter(([, v]) => v !== undefined)+ );+ const searchParams = new URLSearchParams(filteredSearch as any);
// …recreate array values below…
📝 Committable suggestion
‼️IMPORTANT

Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

constsearchParams=newURLSearchParams(searchasany);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
functionbuildQueryString({ search, ... }: FapiRequestInit): string{
constfilteredSearch=Object.fromEntries(
Object.entries(search??{}).filter(([,v])=>v!==undefined)
);
constsearchParams=newURLSearchParams(filteredSearchasany);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
🤖 Prompt for AI Agents
In packages/clerk-js/src/core/fapiClient.ts around lines 108-109, filter out
undefined values from the search object before creating URLSearchParams: iterate
keys of the search input, skip any key whose value is undefined, and for array
values create a new array with undefined entries removed (so arrays remain
arrays and not become "undefined" strings); then pass this cleaned object to new
URLSearchParams. Ensure you preserve non-array values and convert them to
strings only after removing undefined entries.


 // Append supported FAPI version to the query string
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
fix(clerk-js): Revert query filtering from fapiClient#6817

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

 Sign up for GitHub

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

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Sign in
to your account

 Closed

panteliselef
wants to merge
1
commit into

from

 Closed


fix(clerk-js): Revert query filtering from fapiClient
#6817
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2 changes: 2 additions & 0 deletions
.changeset/blue-oranges-make.md

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,2 @@
---
---

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 to 
+2

@coderabbitaicoderabbitaiBotSep 19, 2025

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⚠️ Potential issue
Missing changeset content.
The changeset file is empty and should include package names and descriptions of changes.
A valid changeset should follow this format:
---+"@clerk/clerk-js": patch---++Revert query filtering from fapiClient - no longer filter undefined properties before building query parameters.
📝 Committable suggestion
‼️IMPORTANT

Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

---
---
---
"@clerk/clerk-js": patch
---
Revert query filtering from fapiClient - no longer filter undefined properties before building query parameters.
🤖 Prompt for AI Agents
In .changeset/blue-oranges-make.md around lines 1 to 2, the changeset file is
empty; replace the placeholder with a valid changeset YAML block that lists the
affected package(s) and a short summary of the change(s). Specifically, add the
top-level version bump type for each package (patch/minor/major) as keys and a
brief human-readable description under the body (wrap text as needed), following
the standard Changesets format: a header mapping package names to release types,
a divider line of "---", and then the description paragraph(s).


15 changes: 1 addition & 14 deletions
packages/clerk-js/src/core/fapiClient.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -105,20 +105,7 @@ export function createFapiClient(options: FapiClientOptions): FapiClient {
 }

 function buildQueryString({ method, path, sessionId, search, rotatingTokenNonce }: FapiRequestInit): string {
 const filteredSearch =
 search && typeof search === 'object'
 ? Object.keys(search as Record<string, any>).reduce(
 (acc, key) => {
 const value = (search as Record<string, any>)[key];
 if (value !== undefined) {
 acc[key] = value;
 }
 return acc;
 },
 {} as Record<string, any>,
 )
 : search;
 const searchParams = new URLSearchParams(filteredSearch as any);
 const searchParams = new URLSearchParams(search as any);
 // the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow

Comment on lines

+108
 to 
109

@coderabbitaicoderabbitaiBotSep 19, 2025

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Contributor
Choose a reason for hiding this comment

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⚠️ Potential issue
🧩 Analysis chain
Potential issue with undefined values in URLSearchParams.
The URLSearchParams constructor will stringify undefined values as "undefined" strings rather than omitting them, which could result in query parameters like ?param=undefined being sent to the API.
Run this script to check how undefined values are handled across the codebase:
Consider filtering undefined values before passing to URLSearchParams:
 function buildQueryString({ method, path, sessionId, search, rotatingTokenNonce }: FapiRequestInit): string {
- const searchParams = new URLSearchParams(search as any);+ // Filter out undefined values to prevent them from being stringified as "undefined"+ const filteredSearch = search && typeof search === 'object' && !Array.isArray(search) + ? Object.fromEntries(Object.entries(search).filter(([_, v]) => v !== undefined))+ : search;+ const searchParams = new URLSearchParams(filteredSearch as any);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
🏁 Script executed:
#!/bin/bash# Description: Check how search parameters are constructed and used throughout the codebase# Find places where search parameters are constructed or passed to fapiClient
rg -nP -C3 --type=ts --type=js 'search\s*:\s*[^,}]+'| head -20
# Look for undefined handling in query construction
ast-grep --pattern $'buildQueryString($_)'# Check for any existing undefined filtering patterns
rg -nP 'undefined.*filter|filter.*undefined' --type=ts --type=js
Length of output: 2436
Filter out undefined search params before instantiating URLSearchParams

The URLSearchParams constructor stringifies undefined to "undefined", which will produce queries like ?param=undefined. In buildQueryString, add a step to remove undefined values before creating URLSearchParams:
 function buildQueryString({ search, ... }: FapiRequestInit): string {
- const searchParams = new URLSearchParams(search as any);+ const filteredSearch = Object.fromEntries(+ Object.entries(search ?? {}).filter(([, v]) => v !== undefined)+ );+ const searchParams = new URLSearchParams(filteredSearch as any);
// …recreate array values below…
📝 Committable suggestion
‼️IMPORTANT

Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

constsearchParams=newURLSearchParams(searchasany);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
functionbuildQueryString({ search, ... }: FapiRequestInit): string{
constfilteredSearch=Object.fromEntries(
Object.entries(search??{}).filter(([,v])=>v!==undefined)
);
constsearchParams=newURLSearchParams(filteredSearchasany);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
🤖 Prompt for AI Agents
In packages/clerk-js/src/core/fapiClient.ts around lines 108-109, filter out
undefined values from the search object before creating URLSearchParams: iterate
keys of the search input, skip any key whose value is undefined, and for array
values create a new array with undefined entries removed (so arrays remain
arrays and not become "undefined" strings); then pass this cleaned object to new
URLSearchParams. Ensure you preserve non-array values and convert them to
strings only after removing undefined entries.


 // Append supported FAPI version to the query string
Expand Down
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, '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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fix(clerk-js): Revert query filtering from fapiClient#6817

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fix(clerk-js): Revert query filtering from fapiClient
#6817
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2 changes: 2 additions & 0 deletions
.changeset/blue-oranges-make.md

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,2 @@
---
---

Comment on lines

+1
 to 
+2

@coderabbitaicoderabbitaiBotSep 19, 2025

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⚠️ Potential issue
Missing changeset content.
The changeset file is empty and should include package names and descriptions of changes.
A valid changeset should follow this format:
---+"@clerk/clerk-js": patch---++Revert query filtering from fapiClient - no longer filter undefined properties before building query parameters.
📝 Committable suggestion
‼️IMPORTANT

Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

---
---
---
"@clerk/clerk-js": patch
---
Revert query filtering from fapiClient - no longer filter undefined properties before building query parameters.
🤖 Prompt for AI Agents
In .changeset/blue-oranges-make.md around lines 1 to 2, the changeset file is
empty; replace the placeholder with a valid changeset YAML block that lists the
affected package(s) and a short summary of the change(s). Specifically, add the
top-level version bump type for each package (patch/minor/major) as keys and a
brief human-readable description under the body (wrap text as needed), following
the standard Changesets format: a header mapping package names to release types,
a divider line of "---", and then the description paragraph(s).


15 changes: 1 addition & 14 deletions
packages/clerk-js/src/core/fapiClient.ts

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -105,20 +105,7 @@ export function createFapiClient(options: FapiClientOptions): FapiClient {
 }

 function buildQueryString({ method, path, sessionId, search, rotatingTokenNonce }: FapiRequestInit): string {
 const filteredSearch =
 search && typeof search === 'object'
 ? Object.keys(search as Record<string, any>).reduce(
 (acc, key) => {
 const value = (search as Record<string, any>)[key];
 if (value !== undefined) {
 acc[key] = value;
 }
 return acc;
 },
 {} as Record<string, any>,
 )
 : search;
 const searchParams = new URLSearchParams(filteredSearch as any);
 const searchParams = new URLSearchParams(search as any);
 // the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow

Comment on lines

+108
 to 
109

@coderabbitaicoderabbitaiBotSep 19, 2025

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⚠️ Potential issue
🧩 Analysis chain
Potential issue with undefined values in URLSearchParams.
The URLSearchParams constructor will stringify undefined values as "undefined" strings rather than omitting them, which could result in query parameters like ?param=undefined being sent to the API.
Run this script to check how undefined values are handled across the codebase:
Consider filtering undefined values before passing to URLSearchParams:
 function buildQueryString({ method, path, sessionId, search, rotatingTokenNonce }: FapiRequestInit): string {
- const searchParams = new URLSearchParams(search as any);+ // Filter out undefined values to prevent them from being stringified as "undefined"+ const filteredSearch = search && typeof search === 'object' && !Array.isArray(search) + ? Object.fromEntries(Object.entries(search).filter(([_, v]) => v !== undefined))+ : search;+ const searchParams = new URLSearchParams(filteredSearch as any);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
🏁 Script executed:
#!/bin/bash# Description: Check how search parameters are constructed and used throughout the codebase# Find places where search parameters are constructed or passed to fapiClient
rg -nP -C3 --type=ts --type=js 'search\s*:\s*[^,}]+'| head -20
# Look for undefined handling in query construction
ast-grep --pattern $'buildQueryString($_)'# Check for any existing undefined filtering patterns
rg -nP 'undefined.*filter|filter.*undefined' --type=ts --type=js
Length of output: 2436
Filter out undefined search params before instantiating URLSearchParams

The URLSearchParams constructor stringifies undefined to "undefined", which will produce queries like ?param=undefined. In buildQueryString, add a step to remove undefined values before creating URLSearchParams:
 function buildQueryString({ search, ... }: FapiRequestInit): string {
- const searchParams = new URLSearchParams(search as any);+ const filteredSearch = Object.fromEntries(+ Object.entries(search ?? {}).filter(([, v]) => v !== undefined)+ );+ const searchParams = new URLSearchParams(filteredSearch as any);
// …recreate array values below…
📝 Committable suggestion
‼️IMPORTANT

Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

constsearchParams=newURLSearchParams(searchasany);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
functionbuildQueryString({ search, ... }: FapiRequestInit): string{
constfilteredSearch=Object.fromEntries(
Object.entries(search??{}).filter(([,v])=>v!==undefined)
);
constsearchParams=newURLSearchParams(filteredSearchasany);
// the above will parse {key: ['val1','val2']} as key: 'val1,val2' and we need to recreate the array bellow
🤖 Prompt for AI Agents
In packages/clerk-js/src/core/fapiClient.ts around lines 108-109, filter out
undefined values from the search object before creating URLSearchParams: iterate
keys of the search input, skip any key whose value is undefined, and for array
values create a new array with undefined entries removed (so arrays remain
arrays and not become "undefined" strings); then pass this cleaned object to new
URLSearchParams. Ensure you preserve non-array values and convert them to
strings only after removing undefined entries.


 // Append supported FAPI version to the query string
Expand Down
Loading