react-fetch-preloader/dist/react-fetch-preloader.umd.js

Simple React component for display preloader while fetching

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('react')) :
  typeof define === 'function' && define.amd ? define(['exports', 'react'], factory) :
  (factory((global.ReactFetchPreloader = {}),global.React));
}(this, (function (exports,React) { 'use strict';

  React = React && React.hasOwnProperty('default') ? React['default'] : React;

  function _classCallCheck(instance, Constructor) {
    if (!(instance instanceof Constructor)) {
      throw new TypeError("Cannot call a class as a function");
    }
  }

  function _defineProperties(target, props) {
    for (var i = 0; i < props.length; i++) {
      var descriptor = props[i];
      descriptor.enumerable = descriptor.enumerable || false;
      descriptor.configurable = true;
      if ("value" in descriptor) descriptor.writable = true;
      Object.defineProperty(target, descriptor.key, descriptor);
    }
  }

  function _createClass(Constructor, protoProps, staticProps) {
    if (protoProps) _defineProperties(Constructor.prototype, protoProps);
    if (staticProps) _defineProperties(Constructor, staticProps);
    return Constructor;
  }

  function _defineProperty(obj, key, value) {
    if (key in obj) {
      Object.defineProperty(obj, key, {
        value: value,
        enumerable: true,
        configurable: true,
        writable: true
      });
    } else {
      obj[key] = value;
    }

    return obj;
  }

  function _extends() {
    _extends = Object.assign || function (target) {
      for (var i = 1; i < arguments.length; i++) {
        var source = arguments[i];

        for (var key in source) {
          if (Object.prototype.hasOwnProperty.call(source, key)) {
            target[key] = source[key];
          }
        }
      }

      return target;
    };

    return _extends.apply(this, arguments);
  }

  function _objectSpread(target) {
    for (var i = 1; i < arguments.length; i++) {
      var source = arguments[i] != null ? arguments[i] : {};
      var ownKeys = Object.keys(source);

      if (typeof Object.getOwnPropertySymbols === 'function') {
        ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) {
          return Object.getOwnPropertyDescriptor(source, sym).enumerable;
        }));
      }

      ownKeys.forEach(function (key) {
        _defineProperty(target, key, source[key]);
      });
    }

    return target;
  }

  function _inherits(subClass, superClass) {
    if (typeof superClass !== "function" && superClass !== null) {
      throw new TypeError("Super expression must either be null or a function");
    }

    subClass.prototype = Object.create(superClass && superClass.prototype, {
      constructor: {
        value: subClass,
        writable: true,
        configurable: true
      }
    });
    if (superClass) _setPrototypeOf(subClass, superClass);
  }

  function _getPrototypeOf(o) {
    _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
      return o.__proto__ || Object.getPrototypeOf(o);
    };
    return _getPrototypeOf(o);
  }

  function _setPrototypeOf(o, p) {
    _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
      o.__proto__ = p;
      return o;
    };

    return _setPrototypeOf(o, p);
  }

  function _assertThisInitialized(self) {
    if (self === void 0) {
      throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
    }

    return self;
  }

  function _possibleConstructorReturn(self, call) {
    if (call && (typeof call === "object" || typeof call === "function")) {
      return call;
    }

    return _assertThisInitialized(self);
  }

  var INTERVAL = 50;

  var ShowPreloader =
  /*#__PURE__*/
  function (_React$Component) {
    _inherits(ShowPreloader, _React$Component);

    function ShowPreloader() {
      var _getPrototypeOf2;

      var _this;

      _classCallCheck(this, ShowPreloader);

      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
        args[_key] = arguments[_key];
      }

      _this = _possibleConstructorReturn(this, (_getPrototypeOf2 = _getPrototypeOf(ShowPreloader)).call.apply(_getPrototypeOf2, [this].concat(args)));

      _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "state", {
        responseTime: 0,
        isLoading: false,
        showPreloader: false,
        data: null,
        error: null
      });

      _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "checkResponse", function () {
        var duration = _this.props.duration;
        var _this$state = _this.state,
            responseTime = _this$state.responseTime,
            isLoading = _this$state.isLoading,
            showPreloader = _this$state.showPreloader;

        _this.setState(function (prevState) {
          return {
            responseTime: prevState.responseTime + INTERVAL
          };
        }, function () {
          if (responseTime >= duration && isLoading) {
            if (!showPreloader) {
              _this.setState({
                showPreloader: true
              });
            }

            clearInterval(_this.intervalId);
          }
        });
      });

      _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "makeResponse", function (url) {
        var fetch = _this.props.fetch;

        _this.setState({
          responseTime: 0,
          isLoading: true
        });

        fetch(url).then(function (resp) {
          return resp.json();
        }).then(function (data) {
          _this.setState({
            isLoading: false,
            data: data,
            showPreloader: false
          });

          clearInterval(_this.intervalId);
        }).catch(function (error) {
          _this.setState({
            isLoading: false,
            error: error,
            showPreloader: false
          });

          clearInterval(_this.intervalId);
        });
      });

      _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "renderContent", function () {
        var _this$props = _this.props,
            loaded = _this$props.loaded,
            errored = _this$props.errored;
        var Loaded = loaded;
        var Error = errored;
        var _this$state2 = _this.state,
            data = _this$state2.data,
            isLoading = _this$state2.isLoading,
            error = _this$state2.error;

        if (error) {
          return React.createElement(Error, {
            error: error
          });
        }

        return !isLoading && data ? React.createElement(Loaded, {
          data: data
        }) : null;
      });

      return _this;
    }

    _createClass(ShowPreloader, [{
      key: "componentDidMount",
      value: function componentDidMount() {
        var _this$props2 = this.props,
            url = _this$props2.url,
            loaded = _this$props2.loaded;

        if (!url) {
          throw new Error('url param is required!');
        }

        if (!loaded) {
          throw new Error('loaded param is required!');
        }

        this.makeResponse(url);
        this.intervalId = setInterval(this.checkResponse, INTERVAL);
      }
    }, {
      key: "componentDidUpdate",
      value: function componentDidUpdate(prevProps) {
        var url = this.props.url;

        if (url !== prevProps.url) {
          this.makeResponse(url);
          this.intervalId = setInterval(this.checkResponse, INTERVAL);
        }
      }
    }, {
      key: "componentWillUnmount",
      value: function componentWillUnmount() {
        clearInterval(this.intervalId);
      }
    }, {
      key: "render",
      value: function render() {
        var showPreloader = this.state.showPreloader;
        var preloader = this.props.preloader;
        var Preloader = preloader;
        return showPreloader ? React.createElement(Preloader, null) : this.renderContent();
      }
    }]);

    return ShowPreloader;
  }(React.Component);

  _defineProperty(ShowPreloader, "defaultProps", {
    fetch: typeof window !== 'undefined' ? window.fetch : function () {},
    duration: 500,
    errored: function errored() {
      return null;
    },
    preloader: function preloader() {
      return React.createElement("span", null, "Loading...");
    }
  });

  var withPreloader = function withPreloader(WrappedComponent) {
    var HOC =
    /*#__PURE__*/
    function (_React$Component) {
      _inherits(HOC, _React$Component);

      function HOC() {
        var _getPrototypeOf2;

        var _this;

        _classCallCheck(this, HOC);

        for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
          args[_key] = arguments[_key];
        }

        _this = _possibleConstructorReturn(this, (_getPrototypeOf2 = _getPrototypeOf(HOC)).call.apply(_getPrototypeOf2, [this].concat(args)));

        _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "state", {});

        _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "preload", function (id, url) {
          if (!id) {
            throw new Error('Id param is required!');
          }

          if (!url) {
            throw new Error('Url param is required!');
          }

          _this.setState(_defineProperty({}, id, {
            url: url
          }));
        });

        _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "renderPreloader", function (id, showPreloaderOptions) {
          var preloadOptions = _this.props.preloadOptions;

          var options = _objectSpread({}, preloadOptions, showPreloaderOptions);

          return _this.state[id] && React.createElement(ShowPreloader, _extends({
            url: _this.state[id].url
          }, options));
        });

        return _this;
      }

      _createClass(HOC, [{
        key: "render",
        value: function render() {
          return React.createElement(WrappedComponent, {
            preload: this.preload,
            renderPreloader: this.renderPreloader
          });
        }
      }]);

      return HOC;
    }(React.Component);

    return HOC;
  };

  exports.withPreloader = withPreloader;
  exports.ShowPreloader = ShowPreloader;

  Object.defineProperty(exports, '__esModule', { value: true });

})));