@vue-widget/hooks/lib/useSize/index.js

hooks from react to vue

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.useSize = useSize;
var _resizeObserverPolyfill = _interopRequireDefault(require("resize-observer-polyfill"));
var _domTarget = require("../utils/domTarget");
var _useState = require("../useState");
var _vue = require("vue");
var _useEffectWithTarget = _interopRequireDefault(require("../utils/useEffectWithTarget"));
function useSize(target) {
  var _target = (0, _vue.toRef)(target);
  var _a = (0, _useState.useState)(function () {
      var el = (0, _domTarget.getTargetElement)((0, _vue.unref)(target));
      return el ? {
        width: el.clientWidth,
        height: el.clientHeight
      } : undefined;
    }),
    state = _a[0],
    setState = _a[1];
  (0, _useEffectWithTarget["default"])(function () {
    var el = (0, _domTarget.getTargetElement)((0, _vue.unref)(target));
    if (!el) {
      return;
    }
    var resizeObserver = new _resizeObserverPolyfill["default"](function (entries) {
      entries.forEach(function (entry) {
        var _a = entry.target,
          clientWidth = _a.clientWidth,
          clientHeight = _a.clientHeight;
        setState({
          width: clientWidth,
          height: clientHeight
        });
      });
    });
    resizeObserver.observe(el);
    return function () {
      resizeObserver.disconnect();
    };
  }, [], _target);
  return state;
}