Tired of the punycode deprecation message?

Are you tired of seeing this?:

[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:96:7)
     at Module._load (node:internal/modules/cjs/loader:1070:17)
     at TracingChannel.traceSync  
     ...

The "Solve"

Change your start or dev script in package.json to be prefixed with:

NODE_NO_WARNINGS=1

For example,
if you previously had

"start": "vite"

change it to

"start": "NODE_NO_WARNINGS=1 vite"

Now you can enjoy console output with 80,000 less lines of spew.

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If you are motivated and have the time, it is beneficial to try to help out packages by either:

• upgrading them to a version that doesn't trigger the deprecation
• PR a fix that doesn't trigger the deprecation (uses a userland module, as instructed).

The userland module is here: https://github.com/mathiasbynens/punycode.js

And you can scan all your dependencies for violations (so you don't have to rely on runtime to find every occurrance) with this tool: punycode-detector

npx punycode-detector

or

pnpm dlx punycode-detector

---

---

This also works for other tools

For example,
if you previously had

"start": "ember serve"

change it to

"start": "NODE_NO_WARNINGS=1 ember serve"

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