react-script-loader-hoc/dist/scriptLoader.cjs.js

A higher-order React component that assists in the asynchronous loading of third party JS libraries (eg. Stripe.js)

'use strict';

function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }

var React = _interopDefault(require('react'));
var hoistStatics = _interopDefault(require('hoist-non-react-statics'));

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 _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 cachedScripts = [];

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

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

      function ScriptLoader() {
        var _getPrototypeOf2;

        var _this;

        _classCallCheck(this, ScriptLoader);

        for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
          args[_key2] = arguments[_key2];
        }

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

        _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "state", {
          scriptsLoaded: false,
          scriptsLoadedSuccessfully: false
        });

        _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "_isMounted", false);

        _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "loadScripts", function (srcs) {
          var promises = srcs.filter(function (src) {
            return !cachedScripts.includes(src);
          }).map(function (src) {
            return _this.loadScript(src);
          });
          var success = true;
          Promise.all(promises).catch(function () {
            success = false;
          }).then(function () {
            if (!_this._isMounted) {
              return;
            }

            _this.setState({
              scriptsLoaded: true,
              scriptsLoadedSuccessfully: success
            });
          });
        });

        _defineProperty(_assertThisInitialized(_assertThisInitialized(_this)), "loadScript", function (src) {
          cachedScripts.push(src);
          var script = document.createElement('script');
          script.src = src;
          script.async = true;
          var promise = new Promise(function (resolve, reject) {
            script.addEventListener('load', function () {
              return resolve(src);
            });
            script.addEventListener('error', function (e) {
              return reject(e);
            });
          }).catch(function (e) {
            var index = cachedScripts.indexOf(src);
            if (index >= 0) cachedScripts.splice(index, 1);
            script.remove();
            throw e;
          });
          document.body.appendChild(script);
          return promise;
        });

        return _this;
      }

      _createClass(ScriptLoader, [{
        key: "componentDidMount",
        value: function componentDidMount() {
          this._isMounted = true;
          this.loadScripts(scriptSrcs);
        }
      }, {
        key: "componentWillUnmount",
        value: function componentWillUnmount() {
          this._isMounted = false;
        }
      }, {
        key: "render",
        value: function render() {
          var props = _objectSpread({}, this.props, this.state);

          return React.createElement(WrappedComponent, props);
        }
      }]);

      return ScriptLoader;
    }(React.Component);

    return hoistStatics(ScriptLoader, WrappedComponent);
  };
};

module.exports = scriptLoader;