[Javascript] Create a `range` Helper Function with a Generator

Generator functions are great at generating data. You can create all types of functions that take params to define what sort of data to generate. The simplest example using a "start" and an "end" parameter to generate a range of numbers.

 

function* range(start, end) {
    while (start < end) yield start++
}

for (let value of range(0, 10)) {
    console.log(value)
}

console.log([...range(0, 100)])