callbag-interval/index.cjs.js

A callbag listenable source that sends incremental numbers every x milliseconds

'use strict';

const interval = period => (start, sink) => {
  if (start !== 0) return;
  let i = 0;
  const id = setInterval(() => {
    sink(1, i++);
  }, period);
  sink(0, t => {
    if (t === 2) clearInterval(id);
  });
};

module.exports = interval;