Simple approach to mapping contact data

contact-manager.js

const contacts = [{id: 1, name: "DF lade", country: "nig", no: 090}, {id: 2, name: "Miss Akesuwa", country: "nig",  no: 090}, {id: 3, name: "wendy", country: "nig",  no: 090}, ]

const message = `Hello {{name}}, welcome to {{country}}`

function validate(message){
    return true
}


const contactKeys = Object.keys(contacts[0])

const newMessages = contacts.map(contact => {
    let msg = message
    contactKeys.forEach(key => {
        msg = msg.replace(`{{${key}}}`, contact[key])
    })

    return {msg, number: contact.no}
})

console.log(newMessages)