Generate fibonacci numbers using generators in Javascript

fibonacci.js

/**
 * Generate fibnacci numbers using generators
 * A simple illustration of the power that generators
 * can bring in our code
 * 
 * generator is from the https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators
 */


function* fibonacci() {
    let fn1 = 0;
    let fn2 = 1;
    while (true) {
        let current = fn1;
        fn1 = fn2;
        fn2 = current + fn1;
        let reset = yield current;
        if (reset) {
            fn1 = 0;
            fn2 = 1;
        }
    }

}


function nthFib(n) {

    const fibgen = fibonacci();
    let fib = 0;

    for (let o = 0; o <= n; o++) {
        fib = fibgen.next().value;
        console.log('number', o, 'fib', fib);
    }
    return fib;
}

/**
 * Find the nth Fibonacci of 50
 */
const finalFib = nthFib(50);
console.log('result is', finalFib);

👏 Nicely done!

Thanks ❤️ !!!