const arr = [ { a: 1, b: 2 },
{ b: 2, a: 1 },
{ a: 1, b: 2, c: { a: 1, b: 2 } },
{ b: 2, a: 1, c: { b: 2, a: 1 } },
]
const isObject = val => {
return typeof val === 'object' && val !== null
}
const newArr = [...arr]
for (let i = 0; i < newArr.length; i++) {
for (let j = i + 1; j < newArr.length; j++) {
if (equals(newArr[i], newArr[j])) {
newArr.splice(j, 1)
j--
}
}
}
function equals(val1, val2) {
if (!isObject(val1) || !isObject(val2)) return Object.is(val1, val2)
if (val1 === val2) return true
const val1Keys = Object.keys(val1)
const val2Keys = Object.keys(val2)
if (val1Keys.length !== val2Keys.length) return false
for (const key of val1Keys) {
if (!val2Keys.includes(key)) {
return false
}
const res = equals(val1[key], val2[key])
if (!res) return false
} return true
}
console.log(newArr)
