Fibonacci sequence using generator

fibonacci.es5.js

function fibonacci(max) {
    var prev = 0
    var curr = 1
    var temp = 0
    var i = 0
    var out = []

    for (; prev < max; i++) {
        out.push(prev)
        temp = prev
        prev = curr
        curr = temp + curr
    }

    return out
}

var sequence = fibonacci(100)
console.log('Marcin: fibonacci sequence: ', sequence);

module.exports = fibonacci

fibonacci.js

function* fibonacci(max = 1000) {
    let [ prev, curr ] = [ 0, 1 ]

    while (prev < max) {
        yield prev; // the only place where you HAVE to put semicolon...
        ;[ prev, curr ] = [ curr, prev + curr ] // unless you want to do it at the beginning, your choice...
    }
}

// get fibonacci numbers up to 100
const sequence = []
for (let num of fibonacci(100)) {
    sequence.push(num)
}

console.log('Marcin: fibonacci sequence: ', sequence)