npm install fails on Windows with git authentication error

[SimonEast]

Describe the bug
Installation fails with a git error. This didn't happen with another npm package I tried, so I wonder if it's something to do with eleventy.

To Reproduce
I run the command:

npm install -g "@11ty/eleventy"

Expected behavior
I expected the install to complete successfully.

Log output

D:\Dev\Eleventy-Test>npm install -g "@11ty/eleventy"
The system cannot find the path specified.
(node:6540) Warning: Accessing non-existent property 'Reader' of module exports inside circular dependency
(Use `node --trace-warnings ...` to show where the warning was created)
(node:6540) Warning: Accessing non-existent property 'Reader' of module exports inside circular dependency
npm WARN `git config --get remote.origin.url` returned wrong result (git@github.com:11ty/eleventy)
npm ERR! git clone git@github.com:11ty/eleventy Cloning into bare repository 'C:\Users\Simon\AppData\Roaming\npm-cache\_
git-remotes\git-github-com-11ty-eleventy-0276e50c'...
npm ERR! git clone git@github.com:11ty/eleventy git@github.com: Permission denied (publickey).
npm ERR! git clone git@github.com:11ty/eleventy fatal: Could not read from remote repository.
npm ERR! git clone git@github.com:11ty/eleventy
npm ERR! git clone git@github.com:11ty/eleventy Please make sure you have the correct access rights
npm ERR! git clone git@github.com:11ty/eleventy and the repository exists.
npm ERR! addLocal Could not install 11ty/eleventy

Environment:

• OS and Version: Windows 10
• Eleventy Version: none (install failed)

Additional context
This could potentially be a bug with my git/ssh setup, but I've just reinstalled git, node, and deleted the npm cache, but the error persists.

Anyone know what might be causing that?

[SimonEast]

I also cannot do a git clone on the repo:

D:\Dev\Eleventy-Test>git clone git@github.com:11ty/eleventy
Cloning into 'eleventy'...
git@github.com: Permission denied (publickey).
fatal: Could not read from remote repository.

I did a little more digging, and I think this error occurs because:

1. npm is trying to install Eleventy using git via SSH URL (not the public HTTPS one)
2. I haven't yet setup a Github account with a valid key pair

I can try to do #2, but should this be normal (to require installers to have a valid Github account with SSH keys)?

[SimonEast]

Turns out I had multiple versions of node and npm installed on my machine, and one was super old. After deleting both, deleting the remnant files in nodejs and npm-cache folders, and reinstalling fresh, I was then able to install the package.

So perhaps there's no problem with eleventy. Will close the issue.