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fix(node): make hono an optional peer dependency #1896

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fix(node): make hono an optional peer dependency #1896

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5 changes: 5 additions & 0 deletions .changeset/hono-peer-optional.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
'@modelcontextprotocol/node': patch
---

Mark `hono` peer dependency as optional. `@modelcontextprotocol/node` only uses `getRequestListener` from `@hono/node-server` (Node HTTP ↔ Web Standard conversion), which does not require the `hono` framework at runtime. Consumers no longer need to install `hono` to use `NodeStreamableHTTPServerTransport`. Note: `@hono/node-server` itself still declares `hono` as a hard peer, so package managers may emit a warning; this is upstream and harmless for `getRequestListener`-only usage.
5 changes: 5 additions & 0 deletions packages/middleware/node/package.json
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Expand Up @@ -49,6 +49,11 @@
"@modelcontextprotocol/server": "workspace:^",
"hono": "catalog:runtimeServerOnly"
},
"peerDependenciesMeta": {
"hono": {
"optional": true
}
},
"devDependencies": {
"@modelcontextprotocol/server": "workspace:^",
"@modelcontextprotocol/core": "workspace:^",
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