warning Pattern ["buffer@^6.0.3"] is trying to unpack in the same destination

[nflaig]

Getting the following warning due to using this package

warning Pattern ["buffer@^6.0.3"] is trying to unpack in the same destination "/home/<user>/.cache/yarn/v6/npm-buffer-polyfill-6.0.3-2ace578459cc8fbe2a70aaa8f52ee63b6a74c6c6-integrity/node_modules/buffer-polyfill" as pattern ["buffer-polyfill@npm:buffer@^6.0.3"]. This could result in non-deterministic behavior, skipping.

likely related to

vite-plugin-node-polyfills/package.json

Line 73 in bfb5290

"buffer-polyfill": "npm:buffer@^6.0.3",

[nflaig]

Did some digging into the history of this package, looks like there was a similar issue with process-polyfill

vite-plugin-node-polyfills/shims/index.ts

Lines 5 to 9 in bfb5290

	// We cannot use `process-polyfill` as the package name due to a bug in Yarn v1. The errors results in a dependency
	// conflict with `node-stdlib-browser` which fails to import `process/browser.js`.
	// https://github.com/yarnpkg/yarn/issues/6907
	// eslint-disable-next-line unicorn/prefer-node-protocol
	export { default as process } from 'process'

Although I don't know if there is an actual runtime issue due to the buffer warning.

Potential workaround to get rid of the warning is to add custom resolution to install to different versions of buffer package, the only updates in 6.0.3 are type related (feross/buffer#277) so I don't expect problems

"resolutions": {
    "buffer-polyfill": "npm:[email protected]"
  }

I am still curious, I haven't seen this before. Why is the renaming of the buffer package to buffer-polyfill required?

"dependencies": {
    "buffer-polyfill": "npm:buffer@^6.0.3",
  }

[nflaig]

Thanks @davidmyersdev for addressing this so quickly. We have updated the plugin to latest version and all warnings are resolved 🎉