functional-javascript-workshop/exercises/recursion/solution/solution.js

The basics of functional programming in JavaScript. No libraries required.

function getDependencies(mod, result) {
  result = result || []
  var dependencies = mod && mod.dependencies || []
  Object.keys(dependencies).forEach(function(dep) {
    var key = dep + '@' + mod.dependencies[dep].version
    if (result.indexOf(key) === -1) result.push(key)
    getDependencies(mod.dependencies[dep], result)
  })
  return result.sort()
}

module.exports = getDependencies