Convert returned JSON Object Properties to (lower first) camelCase

Question

I have JSON returned from an API like so:

Contacts: [{ GivenName: "Matt", FamilyName: "Berry" }]

To keep this consistent

Answer 1

This solution based on the plain js solution above, uses loadash and Keeps an array if passed as a parameter and Only change the Keys

function camelCaseObject(o) {
    let newO, origKey, value
    if (o instanceof Array) {
        newO = []
        for (origKey in o) {
            value = o[origKey]
            if (typeof value === 'object') {
                value = camelCaseObject(value)
            }
            newO.push(value)
        }
    } else {
        newO = {}
        for (origKey in o) {
            if (o.hasOwnProperty(origKey)) {
                newO[_.camelCase(origKey)] = o[origKey]
            }
        }
    }
    return newO
}

// Example
const obj = [
{'my_key': 'value'},
 {'Another_Key':'anotherValue'},
 {'array_key':
   [{'me_too':2}]
  }
]
console.log(camelCaseObject(obj))