@iicoding/utils/dist/cjs/helper/debounce.js

Browser 端 - 类型判断 - 类似 koa 的异步compose - sleep - 扩展对象属性 - 扩展 storage 对象功能

var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
  // If the importer is in node compatibility mode or this is not an ESM
  // file that has been converted to a CommonJS file using a Babel-
  // compatible transform (i.e. "__esModule" has not been set), then set
  // "default" to the CommonJS "module.exports" for node compatibility.
  isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
  mod
));
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);

// src/helper/debounce.ts
var debounce_exports = {};
__export(debounce_exports, {
  debounce: () => debounce,
  default: () => debounce_default
});
module.exports = __toCommonJS(debounce_exports);
var import__ = require("../index");
var import_global = __toESM(require("../global"));
function debounce(func, wait, options) {
  let lastArgs;
  let lastThis;
  let maxWait;
  let result;
  let timerId;
  let lastCallTime;
  let lastInvokeTime = 0;
  let leading = false;
  let maxing = false;
  let trailing = true;
  const useRAF = !wait && wait !== 0 && typeof import_global.default.requestAnimationFrame === "function";
  if (typeof func !== "function") {
    throw new TypeError("Expected a function");
  }
  wait = +wait || 0;
  if ((0, import__.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, milliseconds) {
    if (useRAF) {
      import_global.default.cancelAnimationFrame(timerId);
      return import_global.default.requestAnimationFrame(pendingFunc);
    }
    return setTimeout(pendingFunc, milliseconds);
  }
  function cancelTimer(id) {
    if (useRAF) {
      import_global.default.cancelAnimationFrame(id);
      return;
    }
    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));
    return void 0;
  }
  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) {
  }
  debounced.cancel = cancel;
  debounced.flush = flush;
  debounced.pending = pending;
  return debounced;
}
var debounce_default = debounce;
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  debounce
});