remove duplicates from the reducer array in javascript code example

Example 1: javascript remove duplicates from array

// for TypeScript and JavaScript
const initialArray = ['a', 'a', 'b',]
finalArray = Array.from(new Set(initialArray)); // a, b

Example 2: javascript filter array remove duplicates

// Using the Set constructor and the spread syntax:

arrayWithOnlyUniques = [...new Set(arrayWithDuplicates)]