How to uniqueize an array of objects?

Question

JavaScript

An array of strings by type can be uniqueized using A if, for example, an array of objectslet arr = ['Один', 'Два', 'Два', 'Три']
arr = Array.from(new Set(arr));

let arr = [
                { label: 'Критичная', value: 'critical' },
                { label: 'Средняя', value: 'medium' },
                { label: 'Не критичная', value: 'low' },
                { label: 'Не критичная', value: 'low' },
                { label: 'Не критичная', value: 'low' }
            ];

Is it possible to do the same with it, remove unnecessary objects by value or key?

Answer 1

[...new Map(arr.map(n => [ n.value, n ])).values()]

or

Object.values(arr.reduce((acc, n) => (acc[n.value] = n, acc), {}))

or

arr.filter((n, i, a) => n === a.find(m => m.value === n.value))

or

Array.from(new Set(arr.map(n => n.value)), n => arr.find(m => m.value === n))