Playing with Ramdascript https://repl.it/LHTR/7

ramdascript.js

const R = require('ramda')

const
  divisibleBy = (n, x) => x % n === 0

, odd = R.compose(R.not, R.partial(divisibleBy, [2]))

, fizzbuzz = x =>
    R.ifElse(
      R.pipe(R.length, R.equals(0))
    , R.always(x)
    , R.identity
    )(
      R.join('',
        [ divisibleBy(3, x) ? 'Fizz': ''
        , divisibleBy(5, x) ? 'Buzz': ''
        ]
      )
    )

, join2d =
    R.compose(
      R.join('\n')
    , R.map(R.join(''))
    )
    
, triangle = height =>
    join2d(
      R.map(
        R.repeat('#')
      , R.range(1, height + 1)
      )
    )

, row = (n, oddChar, evenChar) =>
    R.map(
      R.ifElse(
        odd
      , R.always(oddChar)
      , R.always(evenChar)
      )
    , R.range(1, n + 1)
    )
, grid = side =>
    join2d(
      R.map(
        R.ifElse(
          odd
        , R.partial(row, [side, '#', ' '])
        , R.partial(row, [side, ' ', '#'])
        )
      , R.range(1, side + 1)
      )
    )
  
console.log(grid(10))
console.log()
console.log()
console.log(grid(9))
console.log()
console.log()
console.log(triangle(10))
console.log()
console.log()
console.log(triangle(9))
console.log()
console.log()

console.log(
  join2d(
    R.range(1, 21)
      .map(n => [n, ' => ', fizzbuzz(n)])
  )  
)