How to validate array of objects using Joi?

replacing ordered with items will work.

let Joi = require('joi')
let service = Joi.object().keys({
  serviceName: Joi.string().required(),
})

let services = Joi.array().items(service)

let test = Joi.validate(
  [{ serviceName: 'service1' }, { serviceName: 'service2' }],
  services,
)

For reference click here