radashi-org/radashi v12.5.0

on GitHub

New Functions

Add concat function #388

Flattens and filters nullish values from arguments.

import { concat } from 'radashi'

const result = concat('a', null, ['b', undefined], 'c')
// => ['a', 'b', 'c']

🔗 Docs / Source / Tests

Add pluck function #376

Map an array of objects to an array of arrays.

import { pluck } from 'radashi'

const gods = [
  { name: 'Ra', power: 100 },
  { name: 'Zeus', power: 98 },
]

const names = pluck(gods, ['name'])
// => [['Ra'], ['Zeus']]

Thanks to @nusohiro for the contribution!

🔗 Docs / Source / Tests

Fixed

Fix mapify index argument #384

Ensure the index argument passed to mapify's 2nd callback is the actual array index.

import { mapify } from 'radashi'

const list = [
  { id: 'a', word: 'hello' },
  { id: 'a', word: 'bye' },
  { id: 'a', word: 'oh' },
]

const result = mapify(
  list,
  x => x.id,
  (x, i) => x.word + i,
)
// => Map { 'a' => 'oh2' }

Thanks to @Yukiniro for the contribution!

Avoid infinite loop in cluster when size is 0 #397

The cluster function now correctly handles the case where the size is 0 or less by returning an empty array.

import { cluster } from 'radashi'

const result = cluster([1, 2, 3], 0)
// => []

Thanks to @fResult for the contribution!

Types

Improve cluster type inference #389

The cluster function now provides precise type inference for common cluster sizes (1-8) using tuple types.

import { cluster } from 'radashi'

const result = cluster(['a', 'b', 'c', 'd'], 2)
//    ^? [string, string][]

Thanks to @fResult for the contribution!