dedupe
removes duplicates from your array.
Installation
npm install dedupeUsage
primitive types
import dedupe from 'dedupe'
const a = [1, 2, 2, 3]
const b = dedupe(a)
console.log(b)
//result: [1, 2, 3]complex types
Here the string representation of the object is used for comparism. Internal JSON.stringify is used for serialization.
That means that {} is considered equal to {}.
import dedupe from 'dedupe'
const aa = [{a: 2}, {a: 1}, {a: 1}, {a: 1}]
const bb = dedupe(aa)
console.log(bb)
//result: [{a: 2}, {a: 1}]complex types types with custom hasher
You can use a custom hasher to overwrite the default behaviour.
import dedupe from 'dedupe'
const aaa = [{a: 2, b: 1}, {a: 1, b: 2}, {a: 1, b: 3}, {a: 1, b: 4}]
const bbb = dedupe(aaa, value => value.a)
console.log(bbb)
//result: [{a: 2, b: 1}, {a: 1,b: 2}]