Question: migrate global npm packages

[bfulop]

Hello,

Thank you for this great tool!

I was wondering, what's the "recommended" way to migrate globally installed npm packages when moving from one version to another?

Thanks again!

[istevkovski]

I second this, can we push for this to happen?

[samhwang]

I believe the nvm way of doing this was to:

• nvm use <node version>
• nvm copy-packages <node version that has the global packages you want to migrate from>
• nvm will then migrate those global packages (with the same versions) to the node version you're using.

I'd love to see fnm having this capability as well! <3

[ljharb]

It’s nvm reinstall-packages Y since that’s a more accurate name :-) (and nvm install X --reinstall-packages-from=Y)

It will reinstall packages as well as copy over symlinks (from npm link).

[kraftwerk28]

I use this for migrating global packages (assuming we are currently on the newer version):

fnm_upgrade () {
  fnm exec --using=$1 npm ls --global --json \
    | jq -r '.dependencies | to_entries[] | .key+"@"+.value.version' \
    | xargs npm i -g
}

# Usage:
$ fnm_upgrade 18.4

[its-monotype]

Has anyone managed to create a script for windows PS?

[jryom]

I switched to pnpm for global packages, which sort of solved this issue for me as pnpm keeps packages in a global folder, not tied to a particular version of node. Might be helpful for someone else as well.

[ljharb]

That’s surprising since global packages must be tied to a particular version of node, since installed and compiled packages can differ based on the node version.

[atwright147]

Is this a dupe of #139?

I made a suggestion to add a hooks system, which I think could be used to implement this in #1060

[romantech]

I created a simple script and uploaded it to GitHub Gist. Running the command below will install the LTS version of Node.js and reinstall the global packages that are installed in the current Node.js version. You can also specify the Node.js version you want to install using the -v option.

curl -fsSL https://gist.githubusercontent.com/romantech/83ac87cea4e9a6d7a0985f610df329e5/raw/decd27fb4fb3c0aa6563a74e000dc00974f6f1e9/update-node-lts.sh | bash -s -- -v <version>