@lonelyplanet/dotcom-core/dist-es/containers/asyncComponent/index.js

This package is meant to house some of our more common UI and shared libs across dotcom applications.

var __extends = (this && this.__extends) || (function () {
    var extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
var __assign = (this && this.__assign) || Object.assign || function(t) {
    for (var s, i = 1, n = arguments.length; i < n; i++) {
        s = arguments[i];
        for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
            t[p] = s[p];
    }
    return t;
};
import * as React from "react";
export default function asyncComponent(getComponent) {
    var ComponentCache = null;
    return /** @class */ (function (_super) {
        __extends(AsyncComponent, _super);
        function AsyncComponent(props) {
            var _this = _super.call(this, props) || this;
            _this.state = { Component: ComponentCache };
            return _this;
        }
        AsyncComponent.prototype.componentWillMount = function () {
            var _this = this;
            if (!this.state.Component) {
                getComponent().then(function (Component) {
                    ComponentCache = Component;
                    _this.setState({ Component: Component });
                });
            }
        };
        AsyncComponent.prototype.render = function () {
            var Component = this.state.Component;
            if (Component) {
                return React.createElement(Component, __assign({}, this.props));
            }
            return null;
        };
        return AsyncComponent;
    }(React.Component));
}