Function rateMinimum

Ensures that whatToCall is executed with a given tempo.

const rm = rateMinimum({
 fallback: () => {
   return Math.random();
 },
 whatToCall: (value:number) => {
   console.log(value);
 },
 interval: { secs: 10 }
});

// Invokes `whatToCall`, resetting timeout
rm(10);

// If we don't call rm() before 'interval' has elapsed,
// 'fallback' will be invoked
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A practical use for this is to update calculations based on firing of events as well as when they don't fire. For example user input.

// Average distances
const average = movingAverageLight();
const rm = rateMinimum({
 interval: { secs: 1 },
 whatToCall: (distance: number) => {
   average(distance);
 },
 // If there are no pointermove events, distance is 0
 fallback() {
   return 0;
 }
})

// Report total movemeent
document.addEventListener(`pointermove`, event => {
 rm(event.movementX + event.movementY);
});
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