react-cqtoolbox/lib/utils/debounce.js

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"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = debounce;
function debounce(func, wait, immediate) {
  var timeout = void 0;
  var args = void 0;
  var context = void 0;
  var timestamp = void 0;
  var result = void 0;

  var later = function later() {
    var last = +new Date() - timestamp;

    if (last < wait && last >= 0) {
      timeout = setTimeout(later, wait - last);
    } else {
      timeout = null;
      if (!immediate) {
        result = func.apply(context, args);
        if (!timeout) {
          context = null;
          args = null;
        }
      }
    }
  };

  return function debounced() {
    context = this;
    args = arguments;
    timestamp = +new Date();

    var callNow = immediate && !timeout;
    if (!timeout) {
      timeout = setTimeout(later, wait);
    }

    if (callNow) {
      result = func.apply(context, args);
      context = null;
      args = null;
    }

    return result;
  };
}