Problem

Running the gateway on Node.js v24 produces this error and crashes the server process:

Failed to find Response internal state key

This affects the pre-push hook (npm run build && node start-test.js) and the server itself. The error is intermittent — sometimes the server boots successfully, sometimes it crashes immediately.

Root Cause

Node.js v24 ships with a newer version of Undici that changed how Response internal state is accessed (nodejs/undici@45dceeaf). The installed @hono/node-server@1.13.5 does not handle this change.

This was reported and fixed upstream:

• Issue: honojs/node-server#240
• Fix PR: honojs/node-server#241
• Fixed in: @hono/node-server@1.14.2

Current State

// package.json
"@hono/node-server": "^1.3.3"   // resolves to 1.13.5

Fix

Update the dependency:

npm install @hono/node-server@^1.14.2

Or simply run npm update @hono/node-server — the existing ^1.3.3 semver range already allows 1.14.x.

Reproduction

node --version   # v24.x
npm run build && node start-test.js   # crashes with "Failed to find Response internal state key"

Works fine on Node.js v22 and earlier.