---

Symphony: A Poetic JavaScript Code

class Symphony {
  constructor() {
    this.memo = new Map([
      [0, 0],
      [1, 1]
    ])
  }

  *fibonacci(limit = Infinity, a = 0, b = 1) {
    while (limit--) (yield a, ([a, b] = [b, a + b]))
  }

  graceful(n) {
    return this.memo.has(n) ? this.memo.get(n) : (this.memo.set(n, this.graceful(n - 1) + this.graceful(n - 2)), this.memo.get(n))
  }
}

const poetry = new Symphony()

console.log([...poetry.fibonacci(10)].map((n) => n.toString().padStart(3, ' ')).join(' → '))