Merging Strings with Matrix

mergeStringsMatrix.js

const plus = (a = '') => (b = '') => a + b
const applyOperation = (fn) => (acc, cur) => acc.map((value, index) => fn(cur[index])(value))
const matrix = (list) => (fn) => list.reduceRight(applyOperation(fn))

const solve = (list) => (fn) => matrix(list)(fn).join('')

const str1 = "Testando".split('')
const str2 = "String".split('')
const str3 = "de".split('')
const str4 = "Varios".split('')
const str5 = "Tamanhos".split('')

const array = [
   str1, 
   str2,
   str3,
   str4,
   str5
]

console.log(solve(array)(plus)) //TSdVTeteaasrrmtiiaanonngshdoos