1var assert = require('assert');
2
3/*
4 * @param {number} n The Fibonacci number to get.
5 * @returns {number} The nth Fibonacci number
6 */
7
8function fibonacci(num) {
9  if (num < 0) throw 'num must be >= 0';
10  if (num === 0) return 0;
11  if (num === 1) return 1;
12
13  return fibonacci(num - 1) + fibonacci(num - 2);
14}
15
16try {
17  assert.equal(fibonacci(1), 1);
18
19  console.log('PASSED: ' + '`fibonacci(1)` should return `1`');
20} catch (err) {
21  console.log(err);
22}
23
24try {
25  assert.equal(fibonacci(17), 1597);
26
27  console.log('PASSED: ' + '`fibonacci(17)` should return `1597`');
28} catch (err) {
29  console.log(err);
30}
31
32try {
33  assert.equal(fibonacci(34), 5702887);
34
35  console.log('PASSED: ' + '`fibonacci(34)` should return `5702887`');
36} catch (err) {
37  console.log(err);
38}