@qvant/qui-max
Version:
A Vue 3 Design system for Web.
89 lines (88 loc) • 2.91 kB
JavaScript
import isObject from "./isObject.js";
import now from "./now.js";
import toNumber from "./toNumber.js";
var FUNC_ERROR_TEXT = "Expected a function";
var nativeMax = Math.max, nativeMin = Math.min;
function debounce(func, wait, options) {
var lastArgs, lastThis, maxWait, result, timerId, lastCallTime, lastInvokeTime = 0, leading = false, maxing = false, trailing = true;
if (typeof func != "function") {
throw new TypeError(FUNC_ERROR_TEXT);
}
wait = toNumber(wait) || 0;
if (isObject(options)) {
leading = !!options.leading;
maxing = "maxWait" in options;
maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;
trailing = "trailing" in options ? !!options.trailing : trailing;
}
function invokeFunc(time) {
var args = lastArgs, thisArg = lastThis;
lastArgs = lastThis = void 0;
lastInvokeTime = time;
result = func.apply(thisArg, args);
return result;
}
function leadingEdge(time) {
lastInvokeTime = time;
timerId = setTimeout(timerExpired, wait);
return leading ? invokeFunc(time) : result;
}
function remainingWait(time) {
var timeSinceLastCall = time - lastCallTime, timeSinceLastInvoke = time - lastInvokeTime, timeWaiting = wait - timeSinceLastCall;
return maxing ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke) : timeWaiting;
}
function shouldInvoke(time) {
var timeSinceLastCall = time - lastCallTime, timeSinceLastInvoke = time - lastInvokeTime;
return lastCallTime === void 0 || timeSinceLastCall >= wait || timeSinceLastCall < 0 || maxing && timeSinceLastInvoke >= maxWait;
}
function timerExpired() {
var time = now();
if (shouldInvoke(time)) {
return trailingEdge(time);
}
timerId = setTimeout(timerExpired, remainingWait(time));
}
function trailingEdge(time) {
timerId = void 0;
if (trailing && lastArgs) {
return invokeFunc(time);
}
lastArgs = lastThis = void 0;
return result;
}
function cancel() {
if (timerId !== void 0) {
clearTimeout(timerId);
}
lastInvokeTime = 0;
lastArgs = lastCallTime = lastThis = timerId = void 0;
}
function flush() {
return timerId === void 0 ? result : trailingEdge(now());
}
function debounced() {
var time = now(), isInvoking = shouldInvoke(time);
lastArgs = arguments;
lastThis = this;
lastCallTime = time;
if (isInvoking) {
if (timerId === void 0) {
return leadingEdge(lastCallTime);
}
if (maxing) {
clearTimeout(timerId);
timerId = setTimeout(timerExpired, wait);
return invokeFunc(lastCallTime);
}
}
if (timerId === void 0) {
timerId = setTimeout(timerExpired, wait);
}
return result;
}
debounced.cancel = cancel;
debounced.flush = flush;
return debounced;
}
export { debounce as default };
//# sourceMappingURL=debounce.js.map