Chaining calls

Call all of the functions in the array, passing the result of each call to the next, awaiting the resolution of the last call

(async () => {
  const n = 10
  const fs = []
  for (let i = 0; i < n; i++) {
    fs[i] = (d = '') => d.toString() + i.toString()
  }

  const f =  new Farr(fs)

  const result= await f.cascade() // '0123456789'
})()

Perform the above, but do so with a start value

(async () => {
  const n = 10
  const fs = []
  for (let i = 0; i < n; i++) {
    fs[i] = (d = '') => d.toString() + i.toString()
  }

  const f =  new Farr(fs)

  const result= await f.cascade('o') // 'o0123456789'
})()