fix: prevent Hono from overriding global Response object - #1410

Merged
mattzcarey merged 4 commits into
mainfrom
fix/hono-override-global-objects
Jan 20, 2026
Merged

fix: prevent Hono from overriding global Response object#1410
mattzcarey merged 4 commits into
mainfrom
fix/hono-override-global-objects

Conversation

@mattzcarey

@mattzcareymattzcarey commented Jan 20, 2026•
edited
Loading

Copy link
Copy Markdown
Contributor

Summary

  • Pass overrideGlobalObjects: false to getRequestListener() calls in NodeStreamableHTTPServerTransport
  • Prevents Hono from overwriting the global Response object
  • Adds tests to verify global Response is preserved after transport initialization

Problem

When StreamableHTTPServerTransport is instantiated, Hono's getRequestListener() overwrites the global Response object with its own implementation (by default). This breaks frameworks like Next.js whose NextResponse class extends the native Response, causing instanceof Response checks to fail.

Fixes#1369

Test plan

  • Added tests that verify global Response is not overwritten after transport construction
  • Added tests that verify global Response is not overwritten after handleRequest is called
  • All existing tests pass

@mattzcarey
mattzcarey requested a review from a team as a code ownerJanuary 20, 2026 10:55
@changeset-bot

changeset-botBot commented Jan 20, 2026•
edited
Loading

Copy link
Copy Markdown

🦋 Changeset detected

Latest commit: 2ddf200

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package
NameType
@modelcontextprotocol/nodePatch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

@pkg-pr-new

pkg-pr-newBot commented Jan 20, 2026•
edited
Loading

Copy link
Copy Markdown

Open in StackBlitz

@modelcontextprotocol/client

npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/client@1410

@modelcontextprotocol/server

npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/server@1410

@modelcontextprotocol/express

npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/express@1410

@modelcontextprotocol/hono

npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/hono@1410

@modelcontextprotocol/node

npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/node@1410

commit: 2ddf200

@mattzcarey
fix: prevent Hono from overriding global Response object
2bf9b8f
Pass `overrideGlobalObjects: false` to `getRequestListener()` calls in
NodeStreamableHTTPServerTransport to prevent Hono from overwriting the
global Response object.
This fixes an issue where frameworks like Next.js whose response classes
extend the native Response would break after initializing MCP transport,
as `instanceof Response` checks would fail.
Fixes#1369
@mattzcarey
mattzcareyforce-pushed the fix/hono-override-global-objects branch from 2a43bfc to 2bf9b8fCompareJanuary 20, 2026 11:01
@mattzcarey
mattzcarey merged commit 9296459 into mainJan 20, 2026
13 checks passed
@mattzcarey
mattzcarey deleted the fix/hono-override-global-objects branch January 20, 2026 11:17
This was referenced Jan 19, 2026
Open
Open
Open
Open
Open
Open
Open
Open
Merged
Open
Open
Open
Open
Open
Open
Open
This was referenced Jan 27, 2026
Open
Merged
Open
This was referenced Jan 7, 2026
Open
Open
Open
This was referenced Feb 10, 2026
Open
Open
Open
This was referenced Feb 19, 2026
Open
Open
Open
Open
This was referenced Feb 26, 2026
Open
Open
Open
This was referenced Mar 14, 2026
Open
Open
This was referenced Mar 21, 2026
Closed
Open
Merged
mozmo15 pushed a commit to mozmo15/typescript-sdk that referenced this pull request Mar 30, 2026
@mattzcareymozmo15
fix: prevent Hono from overriding global Response object (modelcontex…
2a9886b
…tprotocol#1410)
Sign up for freeto join this conversation on GitHub. Already have an account? Sign in to comment

Reviewers

@pcarletonpcarletonpcarleton approved these changes

Assignees

No one assigned

Labels

None yet

Projects

None yet

Milestone

No milestone

Development

Successfully merging this pull request may close these issues.

Next AppRouter routes break because hono globally overwrites the response objects (v1.25.x +)

2 participants

@mattzcarey@pcarleton
, '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: prevent Hono from overriding global Response object - #1410
Merged
mattzcarey merged 4 commits into
mainfrom 
fix/hono-override-global-objects
Jan 20, 2026
Merged
fix: prevent Hono from overriding global Response object#1410
mattzcarey merged 4 commits into
mainfrom 
fix/hono-override-global-objects
Conversation
@mattzcarey
@mattzcareymattzcarey
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
Summary
  • Pass overrideGlobalObjects: false to getRequestListener() calls in NodeStreamableHTTPServerTransport
  • Prevents Hono from overwriting the global Response object
  • Adds tests to verify global Response is preserved after transport initialization
Problem
When StreamableHTTPServerTransport is instantiated, Hono's getRequestListener() overwrites the global Response object with its own implementation (by default). This breaks frameworks like Next.js whose NextResponse class extends the native Response, causing instanceof Response checks to fail.
Fixes#1369
Test plan
  •  Added tests that verify global Response is not overwritten after transport construction
  •  Added tests that verify global Response is not overwritten after handleRequest is called
  •  All existing tests pass
@mattzcarey
mattzcarey
requested a review
from a team
as a code ownerJanuary 20, 2026 10:55
@changeset-bot
changeset-botBot
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

🦋 Changeset detected
Latest commit: 2ddf200
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 1 package
NameType
@modelcontextprotocol/nodePatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@pkg-pr-new
pkg-pr-newBot
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

Open in StackBlitz
@modelcontextprotocol/client
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/client@1410

@modelcontextprotocol/server
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/server@1410

@modelcontextprotocol/express
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/express@1410

@modelcontextprotocol/hono
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/hono@1410

@modelcontextprotocol/node
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/node@1410

commit: 2ddf200
@mattzcarey
fix: prevent Hono from overriding global Response object
2bf9b8f
Pass `overrideGlobalObjects: false` to `getRequestListener()` calls in
NodeStreamableHTTPServerTransport to prevent Hono from overwriting the
global Response object.
This fixes an issue where frameworks like Next.js whose response classes
extend the native Response would break after initializing MCP transport,
as `instanceof Response` checks would fail.
Fixes#1369
@mattzcarey
mattzcareyforce-pushed
the
fix/hono-override-global-objects
branch
from
2a43bfc to
2bf9b8fCompareJanuary 20, 2026 11:01
@mattzcarey
mattzcarey
merged commit 9296459
into
mainJan 20, 2026

13 checks passed

@mattzcarey
mattzcarey
deleted the

fix/hono-override-global-objects

branch
January 20, 2026 11:17

This was referenced Jan 19, 2026
 Open

 Open

 Open

 Open

 Open

 Open

 Open

 Open

 Merged

 Open

 Open

 Open

 Open

 Open

 Open

 Open


This was referenced Jan 27, 2026
 Open

 Merged

 Open


This was referenced Jan 7, 2026
 Open

 Open

 Open


This was referenced Feb 10, 2026
 Open

 Open

 Open


This was referenced Feb 19, 2026
 Open

 Open

 Open

 Open


This was referenced Feb 26, 2026
 Open

 Open

 Open


This was referenced Mar 14, 2026
 Open

 Open


This was referenced Mar 21, 2026
 Closed

 Open

 Merged

mozmo15 pushed a commit
to mozmo15/typescript-sdk
that referenced
this pull request
Mar 30, 2026
@mattzcareymozmo15
fix: prevent Hono from overriding global Response object (modelcontex…
2a9886b
…tprotocol#1410)
Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers

@pcarletonpcarletonpcarleton approved these changes

Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

Next AppRouter routes break because hono globally overwrites the response objects (v1.25.x +)


2 participants

@mattzcarey@pcarleton

, '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: prevent Hono from overriding global Response object - #1410
Merged
mattzcarey merged 4 commits into
mainfrom 
fix/hono-override-global-objects
Jan 20, 2026
Merged
fix: prevent Hono from overriding global Response object#1410
mattzcarey merged 4 commits into
mainfrom 
fix/hono-override-global-objects
Conversation
@mattzcarey
@mattzcareymattzcarey
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
Summary
  • Pass overrideGlobalObjects: false to getRequestListener() calls in NodeStreamableHTTPServerTransport
  • Prevents Hono from overwriting the global Response object
  • Adds tests to verify global Response is preserved after transport initialization
Problem
When StreamableHTTPServerTransport is instantiated, Hono's getRequestListener() overwrites the global Response object with its own implementation (by default). This breaks frameworks like Next.js whose NextResponse class extends the native Response, causing instanceof Response checks to fail.
Fixes#1369
Test plan
  •  Added tests that verify global Response is not overwritten after transport construction
  •  Added tests that verify global Response is not overwritten after handleRequest is called
  •  All existing tests pass
@mattzcarey
mattzcarey
requested a review
from a team
as a code ownerJanuary 20, 2026 10:55
@changeset-bot
changeset-botBot
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

🦋 Changeset detected
Latest commit: 2ddf200
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 1 package
NameType
@modelcontextprotocol/nodePatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@pkg-pr-new
pkg-pr-newBot
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

Open in StackBlitz
@modelcontextprotocol/client
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/client@1410

@modelcontextprotocol/server
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/server@1410

@modelcontextprotocol/express
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/express@1410

@modelcontextprotocol/hono
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/hono@1410

@modelcontextprotocol/node
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/node@1410

commit: 2ddf200
@mattzcarey
fix: prevent Hono from overriding global Response object
2bf9b8f
Pass `overrideGlobalObjects: false` to `getRequestListener()` calls in
NodeStreamableHTTPServerTransport to prevent Hono from overwriting the
global Response object.
This fixes an issue where frameworks like Next.js whose response classes
extend the native Response would break after initializing MCP transport,
as `instanceof Response` checks would fail.
Fixes#1369
@mattzcarey
mattzcareyforce-pushed
the
fix/hono-override-global-objects
branch
from
2a43bfc to
2bf9b8fCompareJanuary 20, 2026 11:01
@mattzcarey
mattzcarey
merged commit 9296459
into
mainJan 20, 2026

13 checks passed

@mattzcarey
mattzcarey
deleted the

fix/hono-override-global-objects

branch
January 20, 2026 11:17

This was referenced Jan 19, 2026
 Open

 Open

 Open

 Open

 Open

 Open

 Open

 Open

 Merged

 Open

 Open

 Open

 Open

 Open

 Open

 Open


This was referenced Jan 27, 2026
 Open

 Merged

 Open


This was referenced Jan 7, 2026
 Open

 Open

 Open


This was referenced Feb 10, 2026
 Open

 Open

 Open


This was referenced Feb 19, 2026
 Open

 Open

 Open

 Open


This was referenced Feb 26, 2026
 Open

 Open

 Open


This was referenced Mar 14, 2026
 Open

 Open


This was referenced Mar 21, 2026
 Closed

 Open

 Merged

mozmo15 pushed a commit
to mozmo15/typescript-sdk
that referenced
this pull request
Mar 30, 2026
@mattzcareymozmo15
fix: prevent Hono from overriding global Response object (modelcontex…
2a9886b
…tprotocol#1410)
Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers

@pcarletonpcarletonpcarleton approved these changes

Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

Next AppRouter routes break because hono globally overwrites the response objects (v1.25.x +)


2 participants

@mattzcarey@pcarleton

, '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: prevent Hono from overriding global Response object - #1410
Merged
mattzcarey merged 4 commits into
mainfrom 
fix/hono-override-global-objects
Jan 20, 2026
Merged
fix: prevent Hono from overriding global Response object#1410
mattzcarey merged 4 commits into
mainfrom 
fix/hono-override-global-objects
Conversation
@mattzcarey
@mattzcareymattzcarey
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
Summary
  • Pass overrideGlobalObjects: false to getRequestListener() calls in NodeStreamableHTTPServerTransport
  • Prevents Hono from overwriting the global Response object
  • Adds tests to verify global Response is preserved after transport initialization
Problem
When StreamableHTTPServerTransport is instantiated, Hono's getRequestListener() overwrites the global Response object with its own implementation (by default). This breaks frameworks like Next.js whose NextResponse class extends the native Response, causing instanceof Response checks to fail.
Fixes#1369
Test plan
  •  Added tests that verify global Response is not overwritten after transport construction
  •  Added tests that verify global Response is not overwritten after handleRequest is called
  •  All existing tests pass
@mattzcarey
mattzcarey
requested a review
from a team
as a code ownerJanuary 20, 2026 10:55
@changeset-bot
changeset-botBot
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

🦋 Changeset detected
Latest commit: 2ddf200
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 1 package
NameType
@modelcontextprotocol/nodePatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@pkg-pr-new
pkg-pr-newBot
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

Open in StackBlitz
@modelcontextprotocol/client
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/client@1410

@modelcontextprotocol/server
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/server@1410

@modelcontextprotocol/express
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/express@1410

@modelcontextprotocol/hono
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/hono@1410

@modelcontextprotocol/node
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/node@1410

commit: 2ddf200
@mattzcarey
fix: prevent Hono from overriding global Response object
2bf9b8f
Pass `overrideGlobalObjects: false` to `getRequestListener()` calls in
NodeStreamableHTTPServerTransport to prevent Hono from overwriting the
global Response object.
This fixes an issue where frameworks like Next.js whose response classes
extend the native Response would break after initializing MCP transport,
as `instanceof Response` checks would fail.
Fixes#1369
@mattzcarey
mattzcareyforce-pushed
the
fix/hono-override-global-objects
branch
from
2a43bfc to
2bf9b8fCompareJanuary 20, 2026 11:01
@mattzcarey
mattzcarey
merged commit 9296459
into
mainJan 20, 2026

13 checks passed

@mattzcarey
mattzcarey
deleted the

fix/hono-override-global-objects

branch
January 20, 2026 11:17

This was referenced Jan 19, 2026
 Open

 Open

 Open

 Open

 Open

 Open

 Open

 Open

 Merged

 Open

 Open

 Open

 Open

 Open

 Open

 Open


This was referenced Jan 27, 2026
 Open

 Merged

 Open


This was referenced Jan 7, 2026
 Open

 Open

 Open


This was referenced Feb 10, 2026
 Open

 Open

 Open


This was referenced Feb 19, 2026
 Open

 Open

 Open

 Open


This was referenced Feb 26, 2026
 Open

 Open

 Open


This was referenced Mar 14, 2026
 Open

 Open


This was referenced Mar 21, 2026
 Closed

 Open

 Merged

mozmo15 pushed a commit
to mozmo15/typescript-sdk
that referenced
this pull request
Mar 30, 2026
@mattzcareymozmo15
fix: prevent Hono from overriding global Response object (modelcontex…
2a9886b
…tprotocol#1410)
Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers

@pcarletonpcarletonpcarleton approved these changes

Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

Next AppRouter routes break because hono globally overwrites the response objects (v1.25.x +)


2 participants

@mattzcarey@pcarleton

, '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
fix: prevent Hono from overriding global Response object - #1410
Merged
mattzcarey merged 4 commits into
mainfrom 
fix/hono-override-global-objects
Jan 20, 2026
Merged
fix: prevent Hono from overriding global Response object#1410
mattzcarey merged 4 commits into
mainfrom 
fix/hono-override-global-objects
Conversation
@mattzcarey
@mattzcareymattzcarey
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
Summary
  • Pass overrideGlobalObjects: false to getRequestListener() calls in NodeStreamableHTTPServerTransport
  • Prevents Hono from overwriting the global Response object
  • Adds tests to verify global Response is preserved after transport initialization
Problem
When StreamableHTTPServerTransport is instantiated, Hono's getRequestListener() overwrites the global Response object with its own implementation (by default). This breaks frameworks like Next.js whose NextResponse class extends the native Response, causing instanceof Response checks to fail.
Fixes#1369
Test plan
  •  Added tests that verify global Response is not overwritten after transport construction
  •  Added tests that verify global Response is not overwritten after handleRequest is called
  •  All existing tests pass
@mattzcarey
mattzcarey
requested a review
from a team
as a code ownerJanuary 20, 2026 10:55
@changeset-bot
changeset-botBot
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

🦋 Changeset detected
Latest commit: 2ddf200
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 1 package
NameType
@modelcontextprotocol/nodePatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@pkg-pr-new
pkg-pr-newBot
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

Open in StackBlitz
@modelcontextprotocol/client
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/client@1410

@modelcontextprotocol/server
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/server@1410

@modelcontextprotocol/express
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/express@1410

@modelcontextprotocol/hono
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/hono@1410

@modelcontextprotocol/node
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/node@1410

commit: 2ddf200
@mattzcarey
fix: prevent Hono from overriding global Response object
2bf9b8f
Pass `overrideGlobalObjects: false` to `getRequestListener()` calls in
NodeStreamableHTTPServerTransport to prevent Hono from overwriting the
global Response object.
This fixes an issue where frameworks like Next.js whose response classes
extend the native Response would break after initializing MCP transport,
as `instanceof Response` checks would fail.
Fixes#1369
@mattzcarey
mattzcareyforce-pushed
the
fix/hono-override-global-objects
branch
from
2a43bfc to
2bf9b8fCompareJanuary 20, 2026 11:01
@mattzcarey
mattzcarey
merged commit 9296459
into
mainJan 20, 2026

13 checks passed

@mattzcarey
mattzcarey
deleted the

fix/hono-override-global-objects

branch
January 20, 2026 11:17

This was referenced Jan 19, 2026
 Open

 Open

 Open

 Open

 Open

 Open

 Open

 Open

 Merged

 Open

 Open

 Open

 Open

 Open

 Open

 Open


This was referenced Jan 27, 2026
 Open

 Merged

 Open


This was referenced Jan 7, 2026
 Open

 Open

 Open


This was referenced Feb 10, 2026
 Open

 Open

 Open


This was referenced Feb 19, 2026
 Open

 Open

 Open

 Open


This was referenced Feb 26, 2026
 Open

 Open

 Open


This was referenced Mar 14, 2026
 Open

 Open


This was referenced Mar 21, 2026
 Closed

 Open

 Merged

mozmo15 pushed a commit
to mozmo15/typescript-sdk
that referenced
this pull request
Mar 30, 2026
@mattzcareymozmo15
fix: prevent Hono from overriding global Response object (modelcontex…
2a9886b
…tprotocol#1410)
Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers

@pcarletonpcarletonpcarleton approved these changes

Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

Next AppRouter routes break because hono globally overwrites the response objects (v1.25.x +)


2 participants

@mattzcarey@pcarleton

, '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: prevent Hono from overriding global Response object - #1410
Merged
mattzcarey merged 4 commits into
mainfrom 
fix/hono-override-global-objects
Jan 20, 2026
Merged
fix: prevent Hono from overriding global Response object#1410
mattzcarey merged 4 commits into
mainfrom 
fix/hono-override-global-objects
Conversation
@mattzcarey
@mattzcareymattzcarey
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
Summary
  • Pass overrideGlobalObjects: false to getRequestListener() calls in NodeStreamableHTTPServerTransport
  • Prevents Hono from overwriting the global Response object
  • Adds tests to verify global Response is preserved after transport initialization
Problem
When StreamableHTTPServerTransport is instantiated, Hono's getRequestListener() overwrites the global Response object with its own implementation (by default). This breaks frameworks like Next.js whose NextResponse class extends the native Response, causing instanceof Response checks to fail.
Fixes#1369
Test plan
  •  Added tests that verify global Response is not overwritten after transport construction
  •  Added tests that verify global Response is not overwritten after handleRequest is called
  •  All existing tests pass
@mattzcarey
mattzcarey
requested a review
from a team
as a code ownerJanuary 20, 2026 10:55
@changeset-bot
changeset-botBot
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

🦋 Changeset detected
Latest commit: 2ddf200
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 1 package
NameType
@modelcontextprotocol/nodePatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@pkg-pr-new
pkg-pr-newBot
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

Open in StackBlitz
@modelcontextprotocol/client
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/client@1410

@modelcontextprotocol/server
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/server@1410

@modelcontextprotocol/express
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/express@1410

@modelcontextprotocol/hono
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/hono@1410

@modelcontextprotocol/node
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/node@1410

commit: 2ddf200
@mattzcarey
fix: prevent Hono from overriding global Response object
2bf9b8f
Pass `overrideGlobalObjects: false` to `getRequestListener()` calls in
NodeStreamableHTTPServerTransport to prevent Hono from overwriting the
global Response object.
This fixes an issue where frameworks like Next.js whose response classes
extend the native Response would break after initializing MCP transport,
as `instanceof Response` checks would fail.
Fixes#1369
@mattzcarey
mattzcareyforce-pushed
the
fix/hono-override-global-objects
branch
from
2a43bfc to
2bf9b8fCompareJanuary 20, 2026 11:01
@mattzcarey
mattzcarey
merged commit 9296459
into
mainJan 20, 2026

13 checks passed

@mattzcarey
mattzcarey
deleted the

fix/hono-override-global-objects

branch
January 20, 2026 11:17

This was referenced Jan 19, 2026
 Open

 Open

 Open

 Open

 Open

 Open

 Open

 Open

 Merged

 Open

 Open

 Open

 Open

 Open

 Open

 Open


This was referenced Jan 27, 2026
 Open

 Merged

 Open


This was referenced Jan 7, 2026
 Open

 Open

 Open


This was referenced Feb 10, 2026
 Open

 Open

 Open


This was referenced Feb 19, 2026
 Open

 Open

 Open

 Open


This was referenced Feb 26, 2026
 Open

 Open

 Open


This was referenced Mar 14, 2026
 Open

 Open


This was referenced Mar 21, 2026
 Closed

 Open

 Merged

mozmo15 pushed a commit
to mozmo15/typescript-sdk
that referenced
this pull request
Mar 30, 2026
@mattzcareymozmo15
fix: prevent Hono from overriding global Response object (modelcontex…
2a9886b
…tprotocol#1410)
Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers

@pcarletonpcarletonpcarleton approved these changes

Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

Next AppRouter routes break because hono globally overwrites the response objects (v1.25.x +)


2 participants

@mattzcarey@pcarleton

, '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: prevent Hono from overriding global Response object - #1410
Merged
mattzcarey merged 4 commits into
mainfrom 
fix/hono-override-global-objects
Jan 20, 2026
Merged
fix: prevent Hono from overriding global Response object#1410
mattzcarey merged 4 commits into
mainfrom 
fix/hono-override-global-objects
Conversation
@mattzcarey
@mattzcareymattzcarey
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
Summary
  • Pass overrideGlobalObjects: false to getRequestListener() calls in NodeStreamableHTTPServerTransport
  • Prevents Hono from overwriting the global Response object
  • Adds tests to verify global Response is preserved after transport initialization
Problem
When StreamableHTTPServerTransport is instantiated, Hono's getRequestListener() overwrites the global Response object with its own implementation (by default). This breaks frameworks like Next.js whose NextResponse class extends the native Response, causing instanceof Response checks to fail.
Fixes#1369
Test plan
  •  Added tests that verify global Response is not overwritten after transport construction
  •  Added tests that verify global Response is not overwritten after handleRequest is called
  •  All existing tests pass
@mattzcarey
mattzcarey
requested a review
from a team
as a code ownerJanuary 20, 2026 10:55
@changeset-bot
changeset-botBot
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

🦋 Changeset detected
Latest commit: 2ddf200
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 1 package
NameType
@modelcontextprotocol/nodePatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@pkg-pr-new
pkg-pr-newBot
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

Open in StackBlitz
@modelcontextprotocol/client
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/client@1410

@modelcontextprotocol/server
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/server@1410

@modelcontextprotocol/express
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/express@1410

@modelcontextprotocol/hono
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/hono@1410

@modelcontextprotocol/node
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/node@1410

commit: 2ddf200
@mattzcarey
fix: prevent Hono from overriding global Response object
2bf9b8f
Pass `overrideGlobalObjects: false` to `getRequestListener()` calls in
NodeStreamableHTTPServerTransport to prevent Hono from overwriting the
global Response object.
This fixes an issue where frameworks like Next.js whose response classes
extend the native Response would break after initializing MCP transport,
as `instanceof Response` checks would fail.
Fixes#1369
@mattzcarey
mattzcareyforce-pushed
the
fix/hono-override-global-objects
branch
from
2a43bfc to
2bf9b8fCompareJanuary 20, 2026 11:01
@mattzcarey
mattzcarey
merged commit 9296459
into
mainJan 20, 2026

13 checks passed

@mattzcarey
mattzcarey
deleted the

fix/hono-override-global-objects

branch
January 20, 2026 11:17

This was referenced Jan 19, 2026
 Open

 Open

 Open

 Open

 Open

 Open

 Open

 Open

 Merged

 Open

 Open

 Open

 Open

 Open

 Open

 Open


This was referenced Jan 27, 2026
 Open

 Merged

 Open


This was referenced Jan 7, 2026
 Open

 Open

 Open


This was referenced Feb 10, 2026
 Open

 Open

 Open


This was referenced Feb 19, 2026
 Open

 Open

 Open

 Open


This was referenced Feb 26, 2026
 Open

 Open

 Open


This was referenced Mar 14, 2026
 Open

 Open


This was referenced Mar 21, 2026
 Closed

 Open

 Merged

mozmo15 pushed a commit
to mozmo15/typescript-sdk
that referenced
this pull request
Mar 30, 2026
@mattzcareymozmo15
fix: prevent Hono from overriding global Response object (modelcontex…
2a9886b
…tprotocol#1410)
Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers

@pcarletonpcarletonpcarleton approved these changes

Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

Next AppRouter routes break because hono globally overwrites the response objects (v1.25.x +)


2 participants

@mattzcarey@pcarleton

, '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
fix: prevent Hono from overriding global Response object - #1410
Merged
mattzcarey merged 4 commits into
mainfrom 
fix/hono-override-global-objects
Jan 20, 2026
Merged
fix: prevent Hono from overriding global Response object#1410
mattzcarey merged 4 commits into
mainfrom 
fix/hono-override-global-objects
Conversation
@mattzcarey
@mattzcareymattzcarey
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
Summary
  • Pass overrideGlobalObjects: false to getRequestListener() calls in NodeStreamableHTTPServerTransport
  • Prevents Hono from overwriting the global Response object
  • Adds tests to verify global Response is preserved after transport initialization
Problem
When StreamableHTTPServerTransport is instantiated, Hono's getRequestListener() overwrites the global Response object with its own implementation (by default). This breaks frameworks like Next.js whose NextResponse class extends the native Response, causing instanceof Response checks to fail.
Fixes#1369
Test plan
  •  Added tests that verify global Response is not overwritten after transport construction
  •  Added tests that verify global Response is not overwritten after handleRequest is called
  •  All existing tests pass
@mattzcarey
mattzcarey
requested a review
from a team
as a code ownerJanuary 20, 2026 10:55
@changeset-bot
changeset-botBot
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

🦋 Changeset detected
Latest commit: 2ddf200
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 1 package
NameType
@modelcontextprotocol/nodePatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@pkg-pr-new
pkg-pr-newBot
commented
Jan 20, 2026•

edited

Loading

Copy link


Copy Markdown

Open in StackBlitz
@modelcontextprotocol/client
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/client@1410

@modelcontextprotocol/server
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/server@1410

@modelcontextprotocol/express
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/express@1410

@modelcontextprotocol/hono
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/hono@1410

@modelcontextprotocol/node
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/node@1410

commit: 2ddf200
@mattzcarey
fix: prevent Hono from overriding global Response object
2bf9b8f
Pass `overrideGlobalObjects: false` to `getRequestListener()` calls in
NodeStreamableHTTPServerTransport to prevent Hono from overwriting the
global Response object.
This fixes an issue where frameworks like Next.js whose response classes
extend the native Response would break after initializing MCP transport,
as `instanceof Response` checks would fail.
Fixes#1369
@mattzcarey
mattzcareyforce-pushed
the
fix/hono-override-global-objects
branch
from
2a43bfc to
2bf9b8fCompareJanuary 20, 2026 11:01
@mattzcarey
mattzcarey
merged commit 9296459
into
mainJan 20, 2026

13 checks passed

@mattzcarey
mattzcarey
deleted the

fix/hono-override-global-objects

branch
January 20, 2026 11:17

This was referenced Jan 19, 2026
 Open

 Open

 Open

 Open

 Open

 Open

 Open

 Open

 Merged

 Open

 Open

 Open

 Open

 Open

 Open

 Open


This was referenced Jan 27, 2026
 Open

 Merged

 Open


This was referenced Jan 7, 2026
 Open

 Open

 Open


This was referenced Feb 10, 2026
 Open

 Open

 Open


This was referenced Feb 19, 2026
 Open

 Open

 Open

 Open


This was referenced Feb 26, 2026
 Open

 Open

 Open


This was referenced Mar 14, 2026
 Open

 Open


This was referenced Mar 21, 2026
 Closed

 Open

 Merged

mozmo15 pushed a commit
to mozmo15/typescript-sdk
that referenced
this pull request
Mar 30, 2026
@mattzcareymozmo15
fix: prevent Hono from overriding global Response object (modelcontex…
2a9886b
…tprotocol#1410)
Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers

@pcarletonpcarletonpcarleton approved these changes

Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

Next AppRouter routes break because hono globally overwrites the response objects (v1.25.x +)


2 participants

@mattzcarey@pcarleton