how to upgrade package manager itself

[仿生狮子]

Clear and concise description of the problem

I would like to upgrade pnpm before installing it. It would be nice if I could use the command npx @antfu/ni upgrade self to upgrade the version of pnpm on my CI instead npm install -g pnpm

Suggested solution

1. npx @antfu/ni upgrade self

Alternative

if [[ -f "pnpm-lock.yaml" ]]; then
   npm install -g pnpm
fi;

Validations

• Follow our Code of Conduct
• Read the Contributing Guide.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

[Anthony Fu]

ni -g pnpm like this?

I would suggest using https://github.com/antfu/contribute#corepack so you don't even need to worry about that

[仿生狮子]

ni -g pnpm like this?

I would suggest using antfu/contribute#corepack so you don't even need to worry about that

The only slightly inconvenient aspect is that if I don't use Corepack or other tools to lock the package manager version, I can only manually determine which package manager is being used to perform global installation and upgrades, for example：

if [[ -f "pnpm-lock.yaml" ]]; then
   npm install -g pnpm
elif [[ -f "package-lock.json" ]]; then
   npm install -g npm
fi;

em... what should I do in this situation? Thank you!

[Anthony Fu]

Use run npm install -g pnpm && npm install -g npm && npm install -g yarn - it's not that hard. I don't think it's belong to the scope of this project.

[仿生狮子]

This is a good approach, but there are situations where it is not possible to update the versions of both npm and other package managers simultaneously #5621. Therefore, I am looking for a tool that can call the package manager to solve this problem, and I am still looking for possible answers. Thank you for your response.