every.js

'use strict'

// Check if every one of the countries have launched 20 or more rockets
// using a predicate function
const rockets = [
    { country: 'Russia', launches: 32 },
    { country: 'US', launches: 23 },
    { country: 'China', launches: 16 },
    { country: 'Europe(ESA)', launches: 7 },
    { country: 'India', launches: 4 },
    { country: 'Japan', launches: 3 }
]
const isAggressive = rocket => {
  return rocket.launches >= 20
}

rockets.every(isAggressive) // false