is-sorted-g/index.js

A small module to check if an Array is sorted, study from dcousens/is-sorted

/**
 * @argument {Number} a
 * @argument {Number} b
 */
const defaultComparator = (a, b) => a - b

/**
 * @argument {Array} array
 * @argument {Function} comparator
 */
const checksort = (array, comparator = defaultComparator) => {
  let prev = array.shift()
  return array.every(next => {
    return !(comparator(prev, next) > 0) && (prev = next)
  })
}

module.exports = checksort