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@yanick/remeda-extra

v0.1.0

Published

A handful of added functions for Remeda

Downloads

4

Readme

@yanick/remeda

This package provides a few functions to the already awesome remeda library that I really want, but wasn't able to get in Remeda itself.

Usage

Just import the additional functions from @yanick/remeda-extra.

import { pipe }    from 'remeda';               // as usual
import { matches } from '@yanick/remeda-extra'; // yanick-themed bonus feature!

Additional functions

matches(target, matcher)

matches(matcher)(target)

Compares the input with the matcher and returns true if they match. The matcher can be a function (which will be fed the input and is expected to return a boolean), or a value. If the value is an object, the matching will be recursive.

import { pipe } from 'remeda';
import { matches } from '@yanick/remeda-extra';

matches( 'potato', 'potato'); // => true
matches( 'potato', 'turnip'); // => false
matches( 'potato', vegetable => vegetable === 'potato'); // => true
matches({ a: 1, b :2 }, { a: 1 } ); // => true
matches({ 'a': 4, 'b': 5, 'c': 6 }, { 'a': 4, 'c': 6 }) // => true

pipe({a:1,b:2}, R.matches({ a: 1 }) ) // => true
pipe({a:1,b:2}, R.matches({ b: (val) => val < 5 }) ) // => true
pipe({a:1,b:2}, R.matches({ c: 3 }) ) // => false
pipe( { 'a': 4, 'b': 5, 'c': 6 }, R.matches({ 'a': 4, 'c': 6 })) // => true

sample(target, size | { size: number, repeating: boolean })

sample(size | { size: number, repeating: boolean })(target)

Like the sample that comes with Remeda, but this one shuffles its output automatically.

Returns random elements of the array. If size is bigger than the array length and repeating is false, returns a number of samples equal to the size of the whole array.

sample([1,2,3,4],2); // [3,1]
sample([1,2,3,4],{size:5, repeating: true}); // [3,1,2,2,4]
sample([1,2,3,4],{size:5, repeating: false}); // [3,1,2,4]
R.pipe(
  [{a: 5}, {a: 1}, {a: 3}],
  R.sumBy(x => x.a)
) // 9
R.sample(2)([1,2,3,4]); // [3,1]
R.sample({size:5, repeating: true},[1,2,3,4]); // [3,1,2,2,4]
R.sample({size:5, repeating: false},[1,2,3,4]); // [3,1,2,4]