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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | 179x 255x 255x 179x 2x 27x 27x 17x 17x | /** Owns one replaceable timeout and exposes deterministic idempotent cleanup. @internal */
export interface TimeoutManager {
/** Replaces any pending callback and schedules the next callback after `delay` milliseconds. */
schedule(callback: () => void, delay: number): void;
/** Cancels the pending callback. Repeated calls are no-ops. */
clear(): void;
/** Whether a callback is currently pending. */
readonly pending: boolean;
}
/**
* Creates the timeout primitive shared by delayed overlays and typeahead buffers.
*
* @remarks A fired callback releases its timer before invoking consumer code, so re-entrant
* scheduling is safe. The manager never reads DOM globals and can be disposed with `clear()`.
* @internal
*/
export function createTimeoutManager(): TimeoutManager {
let timer: ReturnType<typeof setTimeout> | undefined;
const clear = (): void => {
if (timer !== undefined) clearTimeout(timer);
timer = undefined;
};
return {
get pending() {
return timer !== undefined;
},
schedule(callback, delay) {
clear();
timer = setTimeout(
() => {
timer = undefined;
callback();
},
Math.max(0, delay),
);
},
clear,
};
}
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