Node.js 22: "[DEP0040] DeprecationWarning: The `punycode` module is deprecated." when using npm module serve

[MikeMcC399]

• This issue follows on from Node.js 21: "[DEP0040] DeprecationWarning: The punycode module is deprecated." #789

Description

Running serve under Node.js 22.x version causes a deprecation notice similar to the following to be displayed:

$ serve -v
(node:3752) [DEP0040] DeprecationWarning: The punycode module is deprecated. Please use a userland alternative instead.
(Use node --trace-deprecation ... to show where the warning was created)
14.2.2

Node.js v22.0.0 (Current) was released on Apr 24, 2024.

Steps to reproduce

On Ubuntu 22.04.4 LTS with Node.js v22.0.0
On Ubuntu 22.04.5 LTS with Node.js v22.9.0

npm install serve@latest -g
export NODE_OPTIONS='--trace-deprecation'
serve -v

shows

$ serve -v
(node:4155) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
    at node:punycode:3:9
    at BuiltinModule.compileForInternalLoader (node:internal/bootstrap/realm:398:7)
    at BuiltinModule.compileForPublicLoader (node:internal/bootstrap/realm:337:10)
    at loadBuiltinModule (node:internal/modules/helpers:113:7)
    at Module._load (node:internal/modules/cjs/loader:1053:17)
    at Module.require (node:internal/modules/cjs/loader:1290:19)
    at require (node:internal/modules/helpers:188:18)
    at Object.<anonymous> (/home/mike/n/lib/node_modules/serve/node_modules/fast-url-parser/src/urlparser.js:401:16)
    at Module._compile (node:internal/modules/cjs/loader:1455:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1534:10)
14.2.2

Library version

14.2.2 and 14.2.3

Node version

v22.0.0 and v22.9.0

[MikeMcC399]

• This issue and Module punycode is deprecated since Node.js 21 serve-handler#204 need to be resolved before Node.js 22.x enters Active LTS status on Oct 29, 2024 (see Release Schedule). If not, I would plan to migrate away from using serve.

[nemanjacosovic]

Probably not worth the mention, but yes it's present in node v22.5.0.

(node:96621) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)

[MikeMcC399]

@nemanjacosovic

I've updated the original posting with the latest versions serve 14.2.3 / Node.js v22.5.1.

[MikeMcC399]

• Module punycode is deprecated since Node.js 21 serve-handler#204 is now resolved. This needs a new release to follow the current latest serve-handler@6.1.5 from Nov 2022, as noted in feat: replace the 'fast-url-parser' module with the 'node:url' module serve-handler#207 (comment)
• This would need a change is this repo as well since serve-handler@6.1.5 is explicitly called out by serve@14.2.3

serve/package.json

Line 47 in d06104a

"serve-handler": "6.1.5",

[MikeMcC399]

• See Bump serve-handler, vitest, and typescript #812 for resolution

[ArmanTheFirst]

I'm struggling with this problem in a Next.js 14 project. The warning appears whenever my dev server via npm run dev is running. My node version is 22.8.0. Still didn't find a fix yet...

[MikeMcC399]

@ArmanTheFirst

Does your error come from vercel/serve or from another module?

The following may give you additional debug information:

export NODE_OPTIONS='--trace-deprecation'
npm run dev

The following will tell you if you have vercel/serve installed, and which version. If it shows (empty) then you don't have vercel/serve installed:

npm ls serve

[ArmanTheFirst]

@MikeMcC399

It seems to be coming from another module, as vercel/serve doesn't appear to be installed (it showed empty for npm ls serve). This came after tracing the deprecation:

(node:35377) [DEP0040] DeprecationWarning: The punycode module is deprecated. Please use a userland alternative instead. at node:punycode:3:9 at BuiltinModule.compileForInternalLoader (node:internal/bootstrap/realm:399:7) at BuiltinModule.compileForPublicLoader (node:internal/bootstrap/realm:338:10) at loadBuiltinModule (node:internal/modules/helpers:108:7) at Module._load (node:internal/modules/cjs/loader:1099:17) at TracingChannel.traceSync (node:diagnostics_channel:315:14) at wrapModuleLoad (node:internal/modules/cjs/loader:217:24) at Module.require (node:internal/modules/cjs/loader:1339:12) at mod.require (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/server/require-hook.js:65:28) at require (node:internal/modules/helpers:135:16) at 477 (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/compiled/node-fetch/index.js:1:104564) at __nccwpck_require__ (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/compiled/node-fetch/index.js:1:453905) at 11 (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/compiled/node-fetch/index.js:1:83776) at __nccwpck_require__ (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/compiled/node-fetch/index.js:1:453905) at 429 (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/compiled/node-fetch/index.js:1:78058) at __nccwpck_require__ (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/compiled/node-fetch/index.js:1:453905) at 943 (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/compiled/node-fetch/index.js:1:80579) at __nccwpck_require__ (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/compiled/node-fetch/index.js:1:453905) at 346 (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/compiled/node-fetch/index.js:1:83438) at __nccwpck_require__ (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/compiled/node-fetch/index.js:1:453905) at 193 (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/compiled/node-fetch/index.js:1:48306) at __nccwpck_require__ (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/compiled/node-fetch/index.js:1:453905) at /Users/arman/.../nextjs-stream-chat/node_modules/next/dist/compiled/node-fetch/index.js:1:454076 at Object.<anonymous> (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/compiled/node-fetch/index.js:1:454119) at Module._compile (node:internal/modules/cjs/loader:1546:14) at Module._extensions..js (node:internal/modules/cjs/loader:1691:10) at Module.load (node:internal/modules/cjs/loader:1317:32) at Module._load (node:internal/modules/cjs/loader:1127:12) at TracingChannel.traceSync (node:diagnostics_channel:315:14) at wrapModuleLoad (node:internal/modules/cjs/loader:217:24) at Module.require (node:internal/modules/cjs/loader:1339:12) at mod.require (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/server/require-hook.js:65:28) at require (node:internal/modules/helpers:135:16) at Object.<anonymous> (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/compiled/@next/font/dist/google/fetch-css-from-google-fonts.js:8:38) at Module._compile (node:internal/modules/cjs/loader:1546:14) at Module._extensions..js (node:internal/modules/cjs/loader:1691:10) at Module.load (node:internal/modules/cjs/loader:1317:32) at Module._load (node:internal/modules/cjs/loader:1127:12) at TracingChannel.traceSync (node:diagnostics_channel:315:14) at wrapModuleLoad (node:internal/modules/cjs/loader:217:24) at Module.require (node:internal/modules/cjs/loader:1339:12) at mod.require (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/server/require-hook.js:65:28) at require (node:internal/modules/helpers:135:16) at Object.<anonymous> (/Users/arman/.../nextjs-stream-chat/node_modules/next/dist/compiled/@next/font/dist/google/loader.js:34:39) at Module._compile (node:internal/modules/cjs/loader:1546:14) at Module._extensions..js (node:internal/modules/cjs/loader:1691:10) at Module.load (node:internal/modules/cjs/loader:1317:32) at Module._load (node:internal/modules/cjs/loader:1127:12) at TracingChannel.traceSync (node:diagnostics_channel:315:14) at wrapModuleLoad (node:internal/modules/cjs/loader:217:24)

[MikeMcC399]

@ArmanTheFirst

vercel/serve doesn't appear to be installed (it showed empty for npm ls serve).

In that case you are in the wrong issue list for your problem. Unfortunately I couldn't see where it's coming from in your logs. They seem to have lost their formatting, so are very difficult to read. See if you can identify any module in the logs which you have installed, and check the corresponding repo issue list to see if DEP0040 has been reported there and if there is a newer version with a fix available.

Also, the following should help:

npm ls punycode

Good luck!

[ArmanTheFirst]

@MikeMcC399

I'm still very thankful for your help and advice which got me closer towards a solution!! Will see what's the best thing I can do. I'll see if the error logs can give me some more information about the module it's originating from. I already tried npm ls punycode:

└─┬ eslint@9.16.0 invalid: "^8" from the root project, "^7.23.0 || ^8.0.0" from node_modules/eslint-config-next └─┬ ajv@6.12.6 └─┬ uri-js@4.4.1 └── punycode@2.3.1

Let me play around with it and find options...