Function skip

docs/tests/v2/es6/js/sanddance.js:92173–92175

(f, step, phase)

}

function skip(f, step, phase) {
  return step <= 1 ? f : phase ? (d, y) => phase + step * Math.floor((f(d, y) - phase) / step) : (d, y) => step * Math.floor(f(d, y) / step);
} // returns the day of the year based on week number, day of week,
// and the day of the week for the first day of the year