"use strict";
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
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 __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);

// src/index.ts
var src_exports = {};
__export(src_exports, {
  startDrag: () => startDrag
});
module.exports = __toCommonJS(src_exports);
function startDrag(event, container, onMove, onEnd) {
  const isTouch = event instanceof TouchEvent;
  let initX = 0;
  let initY = 0;
  const move = (event2, init = false) => {
    const rect = container.getBoundingClientRect();
    const defaultView = container.ownerDocument.defaultView;
    const offsetX = rect.left + defaultView.scrollX;
    const offsetY = rect.top + defaultView.scrollY;
    const isTouch2 = event2 instanceof TouchEvent;
    const x = (isTouch2 ? event2.changedTouches[0].pageX : event2.pageX) - offsetX;
    const y = (isTouch2 ? event2.changedTouches[0].pageY : event2.pageY) - offsetY;
    if (init) {
      initX = x;
      initY = y;
    }
    onMove(event2, x, y, x - initX, y - initY);
  };
  move(event, true);
  const destroy = () => {
    if (isTouch) {
      document.removeEventListener("touchmove", move);
      document.removeEventListener("touchend", stop);
    } else {
      document.removeEventListener("mousemove", move);
      document.removeEventListener("mouseup", stop);
    }
  };
  const stop = (event2) => {
    destroy();
    if (typeof onEnd === "function") {
      onEnd(event2);
    }
  };
  if (isTouch) {
    document.addEventListener("touchmove", move, { passive: true });
    document.addEventListener("touchend", stop);
  } else {
    document.addEventListener("mousemove", move, { passive: true });
    document.addEventListener("mouseup", stop);
  }
  return destroy;
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  startDrag
});