node package manager

dedupe

remove duplicates from your array

dedupe

removes duplicates from your array.

$ npm install dedupe
var dedupe = require('dedupe')
 
var a = [1, 2, 2, 3]
var b = dedupe(a)
console.log(b)
 
//result: [1, 2, 3] 

Here the string representation of the object is used for comparism. The mechanism is similar to JSON.stringifing but a bit more efficient. That means that {} is considered egal to {}.

var dedupe = require('dedupe')
 
var aa = [{a: 2}, {a: 1}, {a: 1}, {a: 1}]
var bb = dedupe(aa)
console.log(bb)
 
//result: [{a: 2}, {a: 1}] 
var dedupe = require('dedupe')
 
var aaa = [{a: 2, b: 1}, {a: 1, b: 2}, {a: 1, b: 3}, {a: 1, b: 4}]
var bbb = dedupe(aaa, value => value.a)
console.log(bbb)
 
//result: [{a: 2, b: 1}, {a: 1,b: 2}]