text: "use strict";
  
  Object.defineProperty(exports, "__esModule", {
    value: true
  });
  exports.useLoadable = useLoadable;
  
  var React = _interopRequireWildcard(require("react"));
  
  function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function _getRequireWildcardCache() { 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; }
  
  function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
  
  function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
  
  function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
  
  function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
  
  function _iterableToArrayLimit(arr, i) { var _i = arr && (typeof Symbol !== "undefined" && arr[Symbol.iterator] || arr["@@iterator"]); if (_i == null) return; var _arr = []; var _n = true; var _d = false; var _s, _e; try { for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
  
  function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
  
  function useLoadable(observable$, initialValue) {
    var subscription = React.useRef();
  
    var _React$useState = React.useState(() => {
      var isSync = true;
      var syncVal = typeof initialValue === 'undefined' ? {
        isLoading: true,
        value: undefined,
        error: undefined
      } : {
        isLoading: false,
        value: initialValue,
        error: undefined
      };
      subscription.current = observable$.subscribe(nextVal => {
        var nextState = {
          isLoading: false,
          value: nextVal,
          error: undefined
        };
  
        if (isSync) {
          syncVal = nextState;
        } else {
          setState(nextState);
        }
      }, error => {
        setState({
          isLoading: false,
          error,
          value: undefined
        });
      });
      isSync = false;
      return syncVal;
    }),
        _React$useState2 = _slicedToArray(_React$useState, 2),
        value = _React$useState2[0],
        setState = _React$useState2[1];
  
    React.useEffect(() => () => {
      if (subscription.current) {
        subscription.current.unsubscribe();
      }
    }, []);
    return value;
  }