@cairn214/fluent-editor/lib/utils/debounce.cjs.js

A rich text editor based on Quill 2.0, which extends rich modules and formats on the basis of Quill. It's powerful and out-of-the-box.

"use strict";
Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
const is = require("./is.cjs.js");
const method = require("./method.cjs.js");
function debounce(func, wait, options = void 0) {
  let lastArgs, lastThis, maxWait, result, timerId, lastCallTime;
  let lastInvokeTime = 0;
  let leading = false;
  let maxing = false;
  let trailing = true;
  const useRAF = !wait && wait !== 0 && typeof method.root.requestAnimationFrame === "function";
  if (typeof func !== "function") {
    throw new TypeError("Expected a function");
  }
  wait = +wait || 0;
  if (is.isObject(options)) {
    leading = !!options.leading;
    maxing = "maxWait" in options;
    maxWait = maxing ? Math.max(+options.maxWait || 0, wait) : maxWait;
    trailing = "trailing" in options ? !!options.trailing : trailing;
  }
  function invokeFunc(time) {
    const args = lastArgs;
    const thisArg = lastThis;
    lastArgs = lastThis = void 0;
    lastInvokeTime = time;
    result = func.apply(thisArg, args);
    return result;
  }
  function startTimer(pendingFunc, wait2) {
    if (useRAF) {
      method.root.cancelAnimationFrame(timerId);
      return method.root.requestAnimationFrame(pendingFunc);
    }
    return setTimeout(pendingFunc, wait2);
  }
  function cancelTimer(id) {
    if (useRAF) {
      return method.root.cancelAnimationFrame(id);
    }
    clearTimeout(id);
  }
  function leadingEdge(time) {
    lastInvokeTime = time;
    timerId = startTimer(timerExpired, wait);
    return leading ? invokeFunc(time) : result;
  }
  function remainingWait(time) {
    const timeSinceLastCall = time - lastCallTime;
    const timeSinceLastInvoke = time - lastInvokeTime;
    const timeWaiting = wait - timeSinceLastCall;
    return maxing ? Math.min(timeWaiting, maxWait - timeSinceLastInvoke) : timeWaiting;
  }
  function shouldInvoke(time) {
    const timeSinceLastCall = time - lastCallTime;
    const timeSinceLastInvoke = time - lastInvokeTime;
    return lastCallTime === void 0 || timeSinceLastCall >= wait || timeSinceLastCall < 0 || maxing && timeSinceLastInvoke >= maxWait;
  }
  function timerExpired() {
    const time = Date.now();
    if (shouldInvoke(time)) {
      return trailingEdge(time);
    }
    timerId = startTimer(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) {
      cancelTimer(timerId);
    }
    lastInvokeTime = 0;
    lastArgs = lastCallTime = lastThis = timerId = void 0;
  }
  function flush() {
    return timerId === void 0 ? result : trailingEdge(Date.now());
  }
  function pending() {
    return timerId !== void 0;
  }
  function debounced(...args) {
    const time = Date.now();
    const isInvoking = shouldInvoke(time);
    lastArgs = args;
    lastThis = this;
    lastCallTime = time;
    if (isInvoking) {
      if (timerId === void 0) {
        return leadingEdge(lastCallTime);
      }
      if (maxing) {
        timerId = startTimer(timerExpired, wait);
        return invokeFunc(lastCallTime);
      }
    }
    if (timerId === void 0) {
      timerId = startTimer(timerExpired, wait);
    }
    return result;
  }
  debounced.cancel = cancel;
  debounced.flush = flush;
  debounced.pending = pending;
  return debounced;
}
exports.debounce = debounce;
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