@react-hook/size/dist/main/index.js

A React hook for measuring the size of HTML elements including when they change

"use strict";

exports.__esModule = true;
exports.default = void 0;

var React = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("react"));

var _resizeObserver = /*#__PURE__*/_interopRequireDefault( /*#__PURE__*/require("@react-hook/resize-observer"));

var _passiveLayoutEffect = /*#__PURE__*/_interopRequireDefault( /*#__PURE__*/require("@react-hook/passive-layout-effect"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

/**
 * A React hook for measuring the size of HTML elements including when they change
 *
 * @param target A React ref created by `useRef()` or an HTML element
 * @param options Configures the initial width and initial height of the hook's state
 */
const useSize = (target, options) => {
  const [size, setSize] = React.useState(() => {
    var _options$initialWidth, _options$initialHeigh;

    const targetEl = target && 'current' in target ? target.current : target;
    return targetEl ? [targetEl.offsetWidth, targetEl.offsetHeight] : [(_options$initialWidth = options === null || options === void 0 ? void 0 : options.initialWidth) !== null && _options$initialWidth !== void 0 ? _options$initialWidth : 0, (_options$initialHeigh = options === null || options === void 0 ? void 0 : options.initialHeight) !== null && _options$initialHeigh !== void 0 ? _options$initialHeigh : 0];
  });
  (0, _passiveLayoutEffect.default)(() => {
    const targetEl = target && 'current' in target ? target.current : target;
    if (!targetEl) return;
    setSize([targetEl.offsetWidth, targetEl.offsetHeight]);
  }, [target]); // Where the magic happens

  (0, _resizeObserver.default)(target, entry => {
    const target = entry.target;
    setSize([target.offsetWidth, target.offsetHeight]);
  });
  return size;
};

var _default = useSize;
exports.default = _default;