microcosm.blue
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fix handle input throttle
oops we were resetting the timer id after an await point, so calls that should have just been scheduled after were getting dropped
bad-example.com
+22
-5
+22
-5
src/deactivated/throttle.ts
+22
-5
src/deactivated/throttle.ts
···
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4
let timer = null;
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5
let lastArgs = null;
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+
let throttleId = 0;
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+
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function throttled(...args) {
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// always make sure our callback args are fresh
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lastArgs = args;
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-
if (timer === null) {
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-
timer = setTimeout(async () => {
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-
followUp(await callback(...lastArgs));
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-
timer = null;
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-
}, minT);
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+
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// early exit if we're waiting for the throttle still
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if (timer !== null) {
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return;
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}
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+
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// otherwise we're starting a timer. make sure we know who we are.
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let myThrottle = ++throttleId;
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// we immediately get a new timer id
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timer = setTimeout(async () => {
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// make sure we synchronously clear this so next throttle isn't lost
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timer = null;
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// *then* we can start the actual callback
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let res = await callback(...lastArgs);
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// but since we awaited the callback, it's now possible to be stale, so check
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+
if (myThrottle === throttleId) {
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followUp(res);
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}
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}, minT);
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+
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}
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return throttled;
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}