function isObject (val) {

return typeof val === 'object' && val !== null

}

function _isArray (val) {

return Array.isArray(val)

}

function _isEqualArrObj (arr1, arr2) {

if (!_isArray(arr1) || !_isArray(arr2)) return arr1 === arr2

if (arr1.length !== arr2.length) return false

if (arr1 === arr2) return true

while (arr1.length) {

const index = arr2.findIndex(val2 => {

return isEqual(arr1[0], val2)

})

if (index === -1) return false

arr1.splice(0, 1)

arr2.splice(index, 1)

}

return true

}

function _isEqualArr (arr1, arr2) {

if (!_isArray(arr1) || !_isArray(arr2)) return arr1 === arr2

if (arr1 === arr2) return true

let isEqualArrObj = true

if (arr1.some(val => typeof val === 'object')) {

const [arr1ArrObj, arr2ArrObj] = [arr1.filter(val => isObject(val)), arr2.filter(val => isObject(val))]

isEqualArrObj = _isEqualArrObj(arr1ArrObj, arr2ArrObj)

}

return isEqualArrObj && !(arr1.some(val => {

if (isObject(val)) return false

return !arr2.includes(val)

}))

}

function isEqual (O1, O2) {

if (!isObject(O1 || !isObject(O2))) return O1 === O2

if (O1 === O2) return true

const [keys1, keys2] = [Object.keys(O1), Object.keys(O2)]

if (keys1.length !== keys2.length) return false

if (_isArray(O1) && _isArray(O2)) {

return _isEqualArr(O1, O2)

}

for (let key in O1) {

if (!isEqual(O1[key], O2[key])) return false

}

return true

}

var obj1 = {

a: 'a',

b: {

x: 'x',

y: 'y'

},

d: ['a', 'b', 'd1']

}

var obj2 = {

a: 'a',

b: {

x: 'x',

y: 'y'

},

d: ['a', 'b', 'd1']

}

var arr1 = ['aaa', 'bbb', { b: 'b' }, [1, 3, 4, 0, 7, 5, 6, { a: 'a' }], { x: 'x', y: 'y' }]

var arr2 = ['bbb', { b: 'b' }, 'aaa', { x: 'x', y: 'y' }, [0, 7, 1, 3, 4, 5, 6, { a: 'a' }]]

var obj3 = { 0: 'a', 1: 'b' }

var arr3 = ['a', 'b']

// console.log('obj1, obj2', isEqual(obj1, obj2))

console.log('arr1 arr2', isEqual(arr1, arr2))

console.log('obj3 arr3', isEqual(obj3, arr3))