functionalFizzBuzz.js

//Converts a value to string
const valueAsString = (value) => value.toString()

//Returns true if 'num' is divided without remainder by 'divider'
const dividesBy = (divider) => (num) => num % divider === 0

//Prints 'i' only if it  obeys the condition given by 'cond', using 'f' as a formatting function
const printIf = (cond, f) => (i) =>  cond(i) ? f(i) : ""

//Applies an array of functions to a value and concats the result
const applyOnAll = (functions, value) => functions.map((f)=> f(value))

//Applies several 'functions' to 'i' and concats the results.
const concat = (...functions) => (value) => applyOnAll(functions, value).join('')

//Applies several functions to a value and returns true if some of them return true
const not = (...functions) => (value) => !_.find(applyOnAll(functions, value))

//The solution itself. No need for description here.
console.log(_.range(1,100).map(concat(
    printIf(dividesBy(3), _.constant("fizz")), 
    printIf(dividesBy(5), _.constant("buzz")), 
    printIf(not(dividesBy(5), dividesBy(3)), valueAsString)
)).join('\n'))