HTTP POST x-www-form-urlencode Lodash-practise

x-www-form-urlencode.js

Задача: build_key_value
Flatten the given hash. This is how HTTP libraries pack data when POST requests are made using x-www-form-urlencoded.

Example: {"x[0]":"1","x[1]":"2","x[2]":"3"} == solution({"x":["1","2","3"]})


var _ = require('lodash')
module.exports = solution = (s, p) => {
  var r = {};
  _.forEach(s, (v, k) => {
    if (_.isObject(v)) {
      if (!p) {
        r = _.merge(r, solution(v, k));
      } else {
        r = _.merge(r, solution(v, p + '[' + k + ']'));
      }
    } else {
      if (!p) {
        r[k] = v;
      } else {
        r[p + '[' + k + ']'] = v;
      }
    }
  });
  return r;
};