Creating an object out of an array of functions

Here's a function that allows you to convert an array of functions into an object of functions where each property is set to the name of the function.

var _ = require("underscore")

function functionName(fn){
  //http://stackoverflow.com/a/17923727/340688
  if(fn.name) return fn.name
  return /^function\s+([\w\$]+)\s*\(/.exec(fn.toString())[1]
}

function objecfify(arr){
  return _.chain(arr)
    .map(function(fn){
      return [functionName(fn), fn]
    })
    .object()
    .value()
}

Usage:

var model = objecfify([
  function create(){
    return "create"
  },
  function read(){
    return "read"
  },
  function update(){
    return "update"
  },
  function remove(){
    return "delete"
  }
])

console.log(model)

Thoughts?

Why use the underscore at all.

For simple array manipulation, the objecfify can be modified as below:

function objecfify(arr) {
    var res = {};
    for (var i = 0, l = arr.length; i < l; i++) {
        res[functionName(arr[i])] = arr[i];
    }
    return res;
}

StackExchange Code Review Q#97435, answer score: 3