"[DEP0040] The `punycode` module is deprecated" with Node.js 21.x #9005

MikeMcC399 · 2023-10-29T10:45:38Z

Many Yarn Classic commands including

yarn info
yarn add
yarn install

provoke a deprecation warning under Node.js current version 21.x.

[DEP0040] DeprecationWarning: The punycode module is deprecated. Please use a userland alternative instead.

Yarn version

Yarn Classic v1.22.19

Steps to reproduce

For example, with Node.js 21.1.0 installed, execute:

npm install yarn -g
yarn info yarn description

shows

$ npm install yarn -g
changed 1 package in 909ms
$ yarn info yarn description
yarn info v1.22.19
(node:2136) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
📦🐈 Fast, reliable, and secure dependency management.
Done in 0.23s.

Further debug information is output by:

NODE_OPTIONS='--trace-deprecation' yarn info yarn description

Comments

The History section of DEP0040 in the Node.js documentation shows that Node.js punycode has been deprecated since Node.js v7.0.0 in Oct 2016 and, starting with Node.js v21.0.0, this has been changed to a runtime deprecation (see nodejs/node#47202). The runtime deprecation is what has caused it to now become visible.

Node.js v21.0.0 was released on Oct 17, 2023 as the first release of the 21.x major version, so the issue is quite new. Because Yarn Classic v1 is frozen I don't expect this deprecation to be fixed. I'm just sharing because I was confused the first time I saw it and I mistakenly thought that the package I was installing with yarn add was causing the message, not Yarn Classic itself.

(For completeness I mention https://nodejs.org/dist/latest-v21.x/docs/api/punycode.html in combination with the comment in the https://github.com/mathiasbynens/punycode.js#installation section of the userland module about how to fix.)

I'm not seeing DEP0040 shown by Yarn Modern stable 4.0.1, so migrating to Yarn Modern would be a logical mitigation for the deprecation message caused by Yarn Classic.

The text was updated successfully, but these errors were encountered:

erikspears · 2023-11-06T21:36:10Z

I'm also getting this on latest MacOS (sonoma) in Terminal. Admitted n00b to all this, but here is the info asked for just above in case it helps:

% node -v
v21.1.0

% yarn -v
1.22.19

% yarn info yarn description
yarn info v1.22.19
(node:11987) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)

arcanis · 2023-11-07T08:56:12Z

I'll make a patch to fix this (but indeed, newer releases don't have this problem and various others, so I suggest try to migrate and letting us know on Discord if you hit a blocker; at the time of this post the latest release is 4.0.1).

MikeMcC399 · 2023-11-07T09:23:13Z

Hi @arcanis

I'm involved with the GitHub JavaScript action cypress-io/github-action which supports both Yarn Classic and Yarn Modern, so I'm happy that there will be a patch for Yarn Classic.

I fully understand the general advice to migrate though.

Many thanks!

MateuszSamin · 2023-11-08T18:33:17Z

I'm also getting this on latest MacOS (sonoma) in Terminal. Admitted n00b to all this, but here is the info asked for just above in case it helps:
% node -v
v21.1.0

% yarn -v
1.22.19

% yarn info yarn description
yarn info v1.22.19
(node:11987) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)

@erikspears Try to downgrade node to 20.9.0 version. I had similar problem and this help me

merceyz · 2023-11-14T10:12:33Z

Fixed in #9009

MikeMcC399 · 2023-11-14T10:32:39Z

@merceyz

Although PR Hotfixes for the 1.22.20 #9009 is merged, and Releases is showing v1.22.20, this version is not published to https://www.npmjs.com/package/yarn
CircleCI on https://app.circleci.com/pipelines/github/yarnpkg/yarn is showing failure

arcanis · 2023-11-14T10:38:39Z

Yes, we're working on that. We don't release 1.x often, so the CI is unfortunately a little unstable - it may take us a day or two to propagate all the archives.

MikeMcC399 · 2023-11-14T11:00:19Z

@arcanis

Thanks for fixing the deprecation issue and good luck in resolving the publication issues as well!

MikeMcC399 · 2023-11-15T02:47:02Z

@arcanis

I am still seeing this issue with
Node.js: v21.2.0
Yarn: v1.22.21

$ yarn info yarn description
yarn info v1.22.21
(node:18924) [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:392:7)
    at BuiltinModule.compileForPublicLoader (node:internal/bootstrap/realm:328:10)
    at loadBuiltinModule (node:internal/modules/helpers:101:7)
    at Module._load (node:internal/modules/cjs/loader:1001:17)
    at Module.require (node:internal/modules/cjs/loader:1235:19)
    at require (C:\Users\mikem\AppData\Roaming\npm\node_modules\yarn\lib\v8-compile-cache.js:159:20)
    at Object.<anonymous> (C:\Users\mikem\AppData\Roaming\npm\node_modules\yarn\lib\cli.js:56536:18)
    at __webpack_require__ (C:\Users\mikem\AppData\Roaming\npm\node_modules\yarn\lib\cli.js:22:30)
    at Object.<anonymous> (C:\Users\mikem\AppData\Roaming\npm\node_modules\yarn\lib\cli.js:71815:18)
📦🐈 Fast, reliable, and secure dependency management.
Done in 0.46s.

MikeMcC399 · 2023-11-16T08:57:01Z

re-submitted as "[DEP0040] The punycode module is deprecated" with Node.js 21.x (Rev 2) #9013 for clarity

carlosibm · 2023-11-26T10:48:02Z

I hit this today on Mac OS 14.1.1 (23B81). Thanks for planning the fix .

Mahi12333 · 2023-11-26T11:07:22Z

(node:15108) [DEP0040] DeprecationWarning: The punycode module is deprecated. Please use a userland alternative instead.
(Use node --trace-deprecation ... to show where the warning was created). How solve this warning.

Amishkaz · 2023-12-14T05:14:19Z

Original : bitwarden/clients#6689 (comment)

solution that worked for me:
npm install punycode --save

and then in node_modules go to the directory tr46 > index.js

// Replace this:
const punycode = require('punycode');
// With this:
const punycode = require('punycode/');

basically just add a trailing forward slash

xthukuh · 2023-12-18T16:42:52Z

Reverting to node version 20.5.1 worked for me. (Incase you're frustrated and looking for a quick solution to get rid of the warning)

Step 1. Install NVM

Windows

winget install CoreyButler.NVMforWindows

Linux

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash

Step 2. NVM install and use node version 20.5.1

nvm install 20.5.1
nvm use 20.5.1

MikeMcC399 · 2023-12-18T16:54:12Z

@xthukuh

The LTS version according to https://nodejs.org/en is 20.10.0. You might want to consider using this one.

xthukuh · 2023-12-19T07:23:10Z

@xthukuh

The LTS version according to https://nodejs.org/en is 20.10.0. You might want to consider using this one.

Thank you. I was rushing for a fix. I'll consider this.

handidev · 2023-12-24T00:07:51Z

still got same error

MikeMcC399 · 2023-12-24T08:57:23Z

@handidev

still got same error

You can follow "[DEP0040] The punycode module is deprecated" with Node.js 21.x (Rev 2) #9013 for the open issue.

MinavKaria · 2023-12-26T07:45:25Z

still got same error

just downgrade to 20.10.0
it is depreciated in 21.5.0

In cmd

nvm install 20.10.0

nvm use 20.10.0

Done

Randomdistro · 2024-01-01T01:19:41Z

thanks minav that ruined my proj

MatteoKonradi · 2024-01-01T07:51:10Z

I don't even use punycode in my project and this somehow was installed by pnpm.

serv@hey node-back % sudo pnpm run dev         

> [email protected] dev /Users/hey/Documents/Code/node-back
> npx nodemon ./main.ts

[nodemon] 3.0.2
[nodemon] to restart at any time, enter `rs`
[nodemon] watching path(s): *.*
[nodemon] watching extensions: ts,json
[nodemon] starting `ts-node ./main.ts`
check env mongodb+srv://£££££££££££:[email protected]/?retryWrites=true&w=majority

mongodb+srv://ghyvl:[email protected]/?retryWrites=true&w=majority
(node:38118) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
Server is on port 3000
^C ELIFECYCLE  Command failed.

crealityeducation · 2024-01-03T19:06:39Z

I upgraded Node to 21.5 and now I'm also getting this issue. Any issue if I ignore this warning?

MikeMcC399 · 2024-01-03T19:14:47Z

@crealityeducation

I upgraded Node to 21.5 and now I'm also getting this issue. Any issue if I ignore this warning?

It's only a warning that it could stop working in some future Node.js version > 21.x, as yet undefined, so you are free to ignore the warning. The deprecation is only saying "please plan ahead".

crealityeducation · 2024-01-04T02:37:44Z

Hi Mike, Thanks for confirming. I'll keep checking this space for upgrade. Have a good day.

traez · 2024-01-06T14:44:27Z

Original : bitwarden/clients#6689 (comment)

solution that worked for me: npm install punycode --save

and then in node_modules go to the directory tr46 > index.js

// Replace this: const punycode = require('punycode'); // With this: const punycode = require('punycode/');

basically just add a trailing forward slash

Thanks for this. Good to know there is a workaround.
But knowing it's an insignificant issue, which will go away with future releases, seems I'll just manage it for now.

My specific error response by the way is stated below. I currently get it on every single node.js project I create.

(node:1692) [DEP0040] DeprecationWarning: The punycode module is deprecated. Please use a userland alternative instead.
(Use node --trace-deprecation ... to show where the warning was created)

shahjalal-bu · 2024-01-06T18:45:10Z

Remove node.js and install node.js LTS version. It will fix the issue.
https://nodejs.org/en/download/

MariuzM · 2024-01-13T10:47:22Z

v21.5.0 still has this message

MikeMcC399 · 2024-01-13T11:30:41Z

@MariuzM

v21.5.0 still has this message

You can follow the open issue "[DEP0040] The punycode module is deprecated" with Node.js 21.x (Rev 2) #9013

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arcanis mentioned this issue Nov 10, 2023

Hotfixes for the 1.22.20 #9009

Merged

egekorkan mentioned this issue Nov 14, 2023

web: use new node-wot release eclipse-thingweb/playground#531

Merged

merceyz closed this as completed Nov 14, 2023

MikeMcC399 mentioned this issue Nov 16, 2023

"[DEP0040] The punycode module is deprecated" with Node.js 21.x (Rev 2) #9013

Closed

vasyas mentioned this issue Nov 22, 2023

Getting Deprecation Warning while running the project vasyas/charger-simulator#9

Closed

DoodleBobBuffPants mentioned this issue Nov 28, 2023

Update yarn to 1.22.22 CircleCI-Public/cimg-node#376

Merged

4 tasks

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AnYiEE mentioned this issue Dec 4, 2023

"[DEP0040] The punycode module is deprecated" with Node.js 21.x privatenumber/tsx#432

Closed

6 tasks

dessalines mentioned this issue Dec 5, 2023

Warning: punycode module is deprecated LemmyNet/lemmy-js-client#218

Closed

mklueh mentioned this issue Dec 9, 2023

Build failed with Node 21.3.0, Error: readCachedProjectGraph failed nrwl/nx#20544

Closed

4 tasks

mklueh mentioned this issue Dec 9, 2023

@nrwl/[email protected] fails with "The punycode module is deprecated. Please use a userland alternative instead." using Yarn 4.0.2 and Node 21.4.0 nrwl/nx#20675

Closed

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vcampitelli mentioned this issue Jan 5, 2024

Receiving punycode deprecation warning FusionAuth/fusionauth-typescript-client#97

Open

donoftime2018 mentioned this issue Jan 7, 2024

Getting punycode decrecated message Automattic/mongoose#14241

Closed

2 tasks

philschmid mentioned this issue Jan 8, 2024

punycode module is deprecated philschmid/clipper.js#2

Open

yarnpkg locked as resolved and limited conversation to collaborators Jan 13, 2024

"[DEP0040] The punycode module is deprecated" with Node.js 21.x #9005

"[DEP0040] The punycode module is deprecated" with Node.js 21.x #9005

Comments

MikeMcC399 commented Oct 29, 2023 • edited Loading

Yarn version

Steps to reproduce

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erikspears commented Nov 6, 2023

arcanis commented Nov 7, 2023 • edited Loading

MikeMcC399 commented Nov 7, 2023

MateuszSamin commented Nov 8, 2023

merceyz commented Nov 14, 2023

MikeMcC399 commented Nov 14, 2023

arcanis commented Nov 14, 2023

MikeMcC399 commented Nov 14, 2023

MikeMcC399 commented Nov 15, 2023

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Amishkaz commented Dec 14, 2023

xthukuh commented Dec 18, 2023

MikeMcC399 commented Dec 18, 2023

xthukuh commented Dec 19, 2023

handidev commented Dec 24, 2023

MikeMcC399 commented Dec 24, 2023

MinavKaria commented Dec 26, 2023

Randomdistro commented Jan 1, 2024

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crealityeducation commented Jan 3, 2024

MikeMcC399 commented Jan 3, 2024

crealityeducation commented Jan 4, 2024

traez commented Jan 6, 2024 • edited Loading

shahjalal-bu commented Jan 6, 2024

MariuzM commented Jan 13, 2024

MikeMcC399 commented Jan 13, 2024

"[DEP0040] The `punycode` module is deprecated" with Node.js 21.x #9005

"[DEP0040] The `punycode` module is deprecated" with Node.js 21.x #9005

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