NOTE Future development will occur at react-native-contacts. Migration is trivial (rename getContacts -> getAll)

getContacts (callback) - returns all contacts as an array of objects
addContact (contact, callback) - adds a contact to the AddressBook.
updateContact (contact, callback) - where contact is an object with a valid recordID
deleteContact (contact, callback) - where contact is an object with a valid recordID

####Permissions Methods (optional) checkPermission (callback) - checks permission to use AddressBook.
requestPermission (callback) - request permission to use AddressBook.

var AddressBook = require('react-native-addressbook')

AddressBook.getContacts( (err, contacts) => {
  if(err && err.type === 'permissionDenied'){
    // x.x
  }
  else{
    console.log(contacts)
  }
})

{
  recordID: 1,
  lastName: "Jung",
  firstName: "Carl",
  middleName: "",
  emailAddresses: [{
    label: "work",
    email: "carl-jung@example.com",
  }],
  phoneNumbers: [{
    label: "mobile",
    number: "(555) 555-5555",
  }],
  thumbnailPath: "",
}

Currently all fields from the contact record except for thumbnailPath are supported for writing

var newPerson = {
  lastName: "Nietzsche",
  firstName: "Friedrich",
  emailAddresses: [{
    label: "work",
    email: "mrniet@example.com",
  }],
}

AddressBook.addContact(newPerson, (err) => { /*...*/ })

//contrived example
AddressBook.getContacts( (err, contacts) => {
  //update the first record
  let someRecord = contacts[0]
  someRecord.emailAddresses.push({
    label: "junk",
    email: "mrniet+junkmail@test.com",
  })
  AddressBook.updateContact(someRecord, (err) => { /*...*/ })

  //delete the second record
  AddressBook.deleteContact(contacts[1], (err) => { /*...*/ })
})

Update and delete reference contacts by their recordID (as returned by the OS in getContacts). Apple does not guarantee the recordID will not change, e.g. it may be reassigned during a phone migration. Consequently you should always grab a fresh contact list with getContacts before performing update and delete operations.

You can also delete a record using only it's recordID like follows: AddressBook.deleteContact({recordID: 1}, (err) => {})}

##Permissions Permissions will automatically be checked and if needed requested upon calling getContacts. If you need more granular control you can using the checkPermission and requestPermission methods as follows:

AddressBook.checkPermission( (err, permission) => {
  // AddressBook.PERMISSION_AUTHORIZED || AddressBook.PERMISSION_UNDEFINED || AddressBook.PERMISSION_DENIED
  if(permission === 'undefined'){
    AddressBook.requestPermission( (err, permission) => {
      // ...
    })
  }
  if(permission === 'authorized'){
    // yay!
  }
  if(permission === 'denied'){
    // x.x
  }
})

1. npm install react-native-addressbook
2. In XCode, in the project navigator, right click Libraries ➜ Add Files to [your project's name]
3. add ./node_modules/react-native-addressbook/RCTAddressBook.xcodeproj
4. In the XCode project navigator, select your project, select the Build Phases tab and in the Link Binary With Libraries section add libRCTAddressBook.a

• checkPermission & requestPermission
• getContacts (get all contacts)
• addContact
• Update and Delete methods
• getContacts options (a la camera roll's getPhotos)
• Automatic permission check & request in getContacts
• Contact Groups support

Thanks to @mattotodd whose RCTAddressBook this is largely derived from.