next/dist/shared/lib/dynamic.js

The React Framework

"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
exports.default = dynamic;
exports.noSSR = noSSR;
var _react = _interopRequireDefault(require("react"));
var _loadable = _interopRequireDefault(require("./loadable"));
function dynamic(dynamicOptions, options) {
    let loadableFn = _loadable.default;
    let loadableOptions = {
        // A loading component is not required, so we default it
        loading: ({ error , isLoading , pastDelay  })=>{
            if (!pastDelay) return null;
            if (process.env.NODE_ENV === 'development') {
                if (isLoading) {
                    return null;
                }
                if (error) {
                    return(/*#__PURE__*/ _react.default.createElement("p", null, error.message, /*#__PURE__*/ _react.default.createElement("br", null), error.stack));
                }
            }
            return null;
        }
    };
    // Support for direct import(), eg: dynamic(import('../hello-world'))
    // Note that this is only kept for the edge case where someone is passing in a promise as first argument
    // The react-loadable babel plugin will turn dynamic(import('../hello-world')) into dynamic(() => import('../hello-world'))
    // To make sure we don't execute the import without rendering first
    if (dynamicOptions instanceof Promise) {
        loadableOptions.loader = ()=>dynamicOptions
        ;
    // Support for having import as a function, eg: dynamic(() => import('../hello-world'))
    } else if (typeof dynamicOptions === 'function') {
        loadableOptions.loader = dynamicOptions;
    // Support for having first argument being options, eg: dynamic({loader: import('../hello-world')})
    } else if (typeof dynamicOptions === 'object') {
        loadableOptions = {
            ...loadableOptions,
            ...dynamicOptions
        };
    }
    // Support for passing options, eg: dynamic(import('../hello-world'), {loading: () => <p>Loading something</p>})
    loadableOptions = {
        ...loadableOptions,
        ...options
    };
    const suspenseOptions = loadableOptions;
    // Error if Fizz rendering is not enabled and `suspense` option is set to true
    if (!process.env.__NEXT_CONCURRENT_FEATURES && suspenseOptions.suspense) {
        throw new Error(`Invalid suspense option usage in next/dynamic. Read more: https://nextjs.org/docs/messages/invalid-dynamic-suspense`);
    }
    if (suspenseOptions.suspense) {
        return loadableFn(suspenseOptions);
    }
    // coming from build/babel/plugins/react-loadable-plugin.js
    if (loadableOptions.loadableGenerated) {
        loadableOptions = {
            ...loadableOptions,
            ...loadableOptions.loadableGenerated
        };
        delete loadableOptions.loadableGenerated;
    }
    // support for disabling server side rendering, eg: dynamic(import('../hello-world'), {ssr: false})
    if (typeof loadableOptions.ssr === 'boolean') {
        if (!loadableOptions.ssr) {
            delete loadableOptions.ssr;
            return noSSR(loadableFn, loadableOptions);
        }
        delete loadableOptions.ssr;
    }
    return loadableFn(loadableOptions);
}
function _interopRequireDefault(obj) {
    return obj && obj.__esModule ? obj : {
        default: obj
    };
}
const isServerSide = typeof window === 'undefined';
function noSSR(LoadableInitializer, loadableOptions) {
    // Removing webpack and modules means react-loadable won't try preloading
    delete loadableOptions.webpack;
    delete loadableOptions.modules;
    // This check is necessary to prevent react-loadable from initializing on the server
    if (!isServerSide) {
        return LoadableInitializer(loadableOptions);
    }
    const Loading = loadableOptions.loading;
    // This will only be rendered on the server side
    return ()=>/*#__PURE__*/ _react.default.createElement(Loading, {
            error: null,
            isLoading: true,
            pastDelay: false,
            timedOut: false
        })
    ;
}

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