Interface Scheduler

A Scheduler decouples the loop from requestAnimationFrame/setTimeout, so tests can drive it with a fake clock without ever touching real time.

Default schedulers exist for the browser (rAF) and Node (setImmediate).

interface Scheduler {
now: () => number;
schedule: (callback: (timestamp: number) => void) => () => void;
}

Properties

now: () => number

Current high-resolution time in milliseconds.

schedule: (callback: (timestamp: number) => void) => () => void

Schedule callback for the next frame. The timestamp arg matches now() at the time the callback fires.

Returns a cancel function.