Function asCallback

Calls callback whenever the generator produces a value.

When using asCallback, call it with await to let generator run its course before continuing:

await asCallback(tick({ interval:1000, loops:5 }), x => {
 // Gets called 5 times, with 1000ms interval
});
console.log(`Hi`); // Prints after 5 seconds
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Or if you skip the await, code continues and callback will still run:

asCallback(tick({ interval: 1000, loops: 5}), x => {
 // Gets called 5 times, with 1000ms interval
});
console.log(`Hi`); // Prints immediately
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