unique

Remove duplicates from an array

Usage

Given an array of items — and optionally, a function to determine their identity — return a new array without any duplicates.

The function preserves the original order of items, keeping the first occurence and omitting duplicates.

import * as _ from 'radashi'

const fish = [
  {
    name: 'Marlin',
    weight: 105,
    source: 'ocean',
  },
  {
    name: 'Salmon',
    weight: 22,
    source: 'river',
  },
  {
    name: 'Salmon',
    weight: 23,
    source: 'stream',
  },
]

_.unique(fish, f => f.name)
// [
//     { name: 'Marlin', weight: 105, source: 'ocean' },
//     { name: 'Salmon', weight: 22, source: 'river' }
// ]