Convert Object Keys To Different String Cases (ex: camelCase And snake_case)

objectKeyCaseDeepTransform.js

const  { transform, set } =  require('lodash');
const {
  isArray, isObjectLike, isPlainObject, map,
} = require('lodash/fp')
const { camelCase, snakeCase }  = require('lodash');

function createIteratee(converter, self) {
  return (result, value, key) => set(result, converter(key), isObjectLike(value) ? self(value) : value)
}

function createHumps(keyConverter) {
  return function humps(node) {
    if (isArray(node)) return map(humps, node)
    if (isPlainObject(node)) return transform(node, createIteratee(keyConverter, humps))
    return node
  }
}

function objectKeyCaseDeepTransform(toCase, obj) {
  const humps = createHumps(toCase)
  return humps(obj)
}

// Test 1
const object1 = { attrOne: 'foo', attrTwo: 'bar', attrThree: { attrOne: 'foo' } }
console.log(objectKeyCaseDeepTransform(snakeCase, object1))

// Test 2
const object2 = { attr_one: 'foo', attr_two: 'bar', attr_three: { attr_one: 'foo' } }
console.log(objectKeyCaseDeepTransform(camelCase, object2))