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I'm currently working on a node.js-project and I've been keeping up with the most recent node releases during development. Now that node 6 is out, I wanted to see if I could make that decision as well.
It turns out some of the modules I use are dependent on older versions of graceful-fs which doesn't support node 6. I get warnings when installing and executing my application, but I can't determine where the graceful-fs package is being used (indirectly).
How can I find out?
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Use the npm list to show the installed packages in the current project as a dependency tree. Use npm list --depth=n to show the dependency tree with a specified depth. Use npm list --prod to show packages in the dependencies . Use npm list --dev to show packages in the devDependencies .
npm does a fairly good job managing transitive dependencies. That's a lot better than what our Java friends are used to.
Peer Dependencies: In package. json file, there is an object called as peerDependencies and it consists of all the packages that are exactly required in the project or to the person who is downloading and the version numbers should also be the same. That is the reason they were named as peerDependencies.
I am fairly certain this is what you want:
npm ls graceful-fs
See documentation here.
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Copying from @Soufiane Ghzal's comment and the npm-ls docs:
To get a "bottoms up" view of why a given package is included in the tree at all, use
npm explain.
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