obj-pick.js

var R = require('ramda');

var obj = {
  a: 1,
  b: {
    c: 2
  }
}

var pickPaths = function(paths, obj) {
  return R.reduce(function(acc, pStr) {
    return R.assoc(pStr, R.path(pStr.split('.'), obj), acc);
  }, {}, paths);
};

pickPaths(['a', 'b.c'], obj);