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Ubuntu – DeprecationWarning: The `punycode` module is deprecated

vs code terminal showing deprecation warning
(node:22063) [DEP0040] DeprecationWarning: The punycode module is deprecated. Please use a userland alternative instead.
(Use node --trace-deprecation ... to show where the warning was created)

This is the issue.
my OS was ubuntu 22.04.
The problem cames when i am trying to use my database with mongoose.
The punycode can see somewhere in my package-lock.json file. I didn’t use it myself , it’s coming with node.

My node version is v21.0.0 , i downgraded it into v20.9.0 then v18.18.0 still the warning is there.
I installed userland module but nothing happens.

The problem i understand was the punycode is deprecated and need to use userland alternative punycode.js . But i didn’t know how to make it possible.

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2

Answers


  1. 0

    This is how I solved this Deprecation Warning:

    Here’s a workaround that might help:

    1. Go to your node_modules directory.

    2. Find the tr46 directory.

    3. Open the index.js file in the tr46 directory.

    4. Replace current require line with this line:

      const punycode = require(‘punycode/’);

    But if you re-install npm packages, or update them, this correction will be lost. However, the Warning disappeared.

    PS:
    Just in case, I use node v21.5.0

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  2. 0

    this problem happen because punycode is deprecated in node version 21 and above…
    downgrade to node version 20

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