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clojurere-frame

lein-npm downloads dependencies of dependencies (re-frame template)

When adding the lein-npm plugin to my re-frame project to manage npm dependencies, lein-npm unexpectedly adds dependencies of dependencies. My understanding is that that's unnecessary, because those are either included in my dependency's jar or otherwise not required (because adding lein-npm to my project is not required in the first place).

Using the re-frame template, I construct this minimal example of my project.clj:

(defproject stamm "0.1.0-SNAPSHOT"
  :dependencies [[org.clojure/clojure "1.8.0"]
                 [re-frame "0.9.1"]]
  :plugins      [[lein-npm "0.6.2"]])

Calling lein npm list now returns the following:

project@0.1.0-SNAPSHOT /path/to/my/project
├── UNMET DEPENDENCY karma@1.0.0
├── UNMET DEPENDENCY karma-chrome-launcher@0.2.0
├── UNMET DEPENDENCY karma-cljs-test@0.1.0
└── UNMET DEPENDENCY karma-junit-reporter@0.3.8

This leads to some 15 MByte of dependencies being downloaded, just by adding lein-npm. I do not declare any of the karma* dependencies shown here in my project.clj (in fact: I do not declare any npm dependencies at all at this point). They originate from the dependency [re-frame "0.9.1"].

Is there a way to prevent that?

Solution

  • I've released re-frame 0.9.2 which puts the NPM dependencies in the :devDependencies key. This will mean that they are not transitive, and re-frame consuming projects won't need to install karma*.

    Original answer:

    At the time of writing, I don't think there's a way to get around this, but I've opened an issue at https://github.com/RyanMcG/lein-npm/issues/50 to report it.