moy-fp/src/List/filter.js

A functional programming library.

import curry from '../Function/curry'

/**
 * (a -> Boolean) -> [a] -> [a]
 */
const filter = curry(
  (pred, array) => {
    const list = [];
    for(let item of array){
      if(pred(item)){
        list.push(item)
      }
    }
    return list
  }
)

export default filter