import flushable from "flushable";

// prints a message to the console after 1 second
const operation = flushable(flushed => {
  console.log(`I completed ${flushed ? "early" : "on time"}`);
}, 1000);

// true if the callback has not been executed
operation.pending();

// stops the callback from being executed
operation.cancel();

// immediately executes the callback
operation.flush();

type Flushable = (
  (flushed: boolean) => any,
  delay: number
) => {
  cancel: () => void,
  flush: () => void,
  pending: () => boolean
};