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

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

"use strict"

var random = require('../randomizer')
var runner = require('../runner')

var data = {
  "name": "functional-javascript-workshop",
  "version": "0.0.13",
  "dependencies": {
    "workshopper": {
      "version": "0.3.3",
      "dependencies": {
        "map-async": {
          "version": "0.1.1"
        },
        "tuple-stream": {
          "version": "0.0.2"
        },
        "split": {
          "version": "0.2.10"
        },
        "through": {
          "version": "2.3.4"
        },
        "mkdirp": {
          "version": "0.3.5"
        },
        "colors-tmpl": {
          "version": "0.1.0",
          "dependencies": {
            "colors": {
              "version": "0.6.2"
            }
          }
        },
        "terminal-menu": {
          "version": "0.1.0",
          "dependencies": {
            "resumer": {
              "version": "0.0.0"
            },
            "charm": {
              "version": "0.1.2"
            },
            "inherits": {
              "version": "2.0.1"
            }
          }
        },
        "optimist": {
          "version": "0.6.0",
          "dependencies": {
            "wordwrap": {
              "version": "0.0.2"
            },
            "minimist": {
              "version": "0.0.4"
            }
          }
        },
        "pygmentize-bundled": {
          "version": "2.1.0",
          "dependencies": {
            "readable-stream": {
              "version": "1.0.17"
            },
            "bl": {
              "version": "0.4.1"
            },
            "through2": {
              "version": "0.2.1"
            }
          }
        },
        "xtend": {
          "version": "2.1.1",
          "dependencies": {
            "object-keys": {
              "version": "0.4.0"
            }
          }
        }
      }
    },
    "lorem-ipsum": {
      "version": "0.1.1",
      "dependencies": {
        "optimist": {
          "version": "0.3.7",
          "dependencies": {
            "wordwrap": {
              "version": "0.0.2"
            }
          }
        },
        "inflection": {
          "version": "1.2.6"
        }
      }
    }
  }
}

function getRandomSubTree() {
  return random.int(0, Object.keys(data.dependencies.workshopper.dependencies).length)
}

var items = [getRandomSubTree(), getRandomSubTree(), getRandomSubTree(), getRandomSubTree()]

module.exports = runner.custom(function(getDependencies) {
  var dependencyTree1 = data.dependencies.workshopper.dependencies[Object.keys(data.dependencies.workshopper.dependencies)[items[0]]]
  var dependencyTree2 = data.dependencies.workshopper.dependencies[Object.keys(data.dependencies.workshopper.dependencies)[items[1]]]
  var dependencyTree3 = data.dependencies.workshopper.dependencies[Object.keys(data.dependencies.workshopper.dependencies)[items[2]]]
  var dependencyTree4 = data.dependencies[Object.keys(data.dependencies)[1]]
  var fullTree = data

  var result = []
  result.push("getDependencies(dependencyTree1)", getDependencies(dependencyTree1))
  result.push("getDependencies(dependencyTree2)", getDependencies(dependencyTree2))
  result.push("getDependencies(dependencyTree3)", getDependencies(dependencyTree3))
  result.push("getDependencies(dependencyTree4)", getDependencies(dependencyTree4))
  result.push("getDependencies(fullTree)", getDependencies(fullTree))
  return result
}).hideInput(data)