substance/util/isArrayEqual.js

Substance is a JavaScript library for web-based content editing. It provides building blocks for realizing custom text editors and web-based publishing system. It is developed to power our online editing platform [Substance](http://substance.io).

import isArray from './isArray'
export default function isArrayEqual (arr1, arr2) {
  if (arr1 === arr2) return true
  if (!isArray(arr1) || !isArray(arr2)) return false
  if (arr1.length !== arr2.length) return false
  const L = arr1.length
  for (var i = 0; i < L; i++) {
    if (arr1[i] !== arr2[i]) return false
  }
  return true
}