Flatten and expand object

expandObject.js

import { reduce, set } from 'lodash'

export default function expandObject(object) {
  return reduce(object, (expanded, value, key) => set(expanded, key, value), {})
}

flattenObject.js

import { isPlainObject, filter, reduce } from 'lodash'

export default function flattenObject(object, parentPath, separator = '.') {
  return reduce(object, (changes, value, key) => {
    const path = filter([parentPath, key]).join(separator)
    const childValues = isPlainObject(value) ? flattenObject(value, path) : {
      [path]: value,
    }

    return {
      ...changes,
      ...childValues,
    }
  }, {})
}