Project Euler 2: Even Fibonacci numbers Solution

1const solution = () => {
2  const LIMIT = 4 * 1e6
3
4  function* fib() {
5    let a = 0
6    let b = 1
7    while (1) {
8      yield a
9      ;[a, b] = [b, a + b]
10    }
11  }
12
13  const fibGen = fib()
14  let res = 0
15  while (1) {
16    const val = fibGen.next().value
17    if (val > LIMIT) break
18    if (val % 2 === 0) res += val
19  }
20  console.log(res)
21}
22
23solution()