Angular Universal-用Mock模块替换Real模块

Question

Angular Universal默认情况下没有安装webpack。然而，我想知道是否有一种方法可以延迟加载模块，或者加载模拟版本来停止编译错误。使用webpack，我们可以这样做：

const NormalModuleReplacementPlugin = require('webpack/lib/NormalModuleReplacementPlugin');

module.exports = {
...
plugins: [
new NormalModuleReplacementPlugin(
/module/,
root('./client/app/shared/servermocks/my-module.mock.ts')
)
]
};

我不知道如何在不破坏代码的情况下安装webpack(我认为它被删除是有原因的(。然而，有没有一种更简单的方法可以使用默认的angular服务器文件来实现这一点？

import 'zone.js/dist/zone-node';
import { ngExpressEngine } from '@nguniversal/express-engine';
import * as express from 'express';
import { join } from 'path';
import { AppServerModule } from './src/main.server';
import { APP_BASE_HREF } from '@angular/common';
import { existsSync } from 'fs';
// The Express app is exported so that it can be used by serverless Functions.
export function app() {
const server = express();
const distFolder = join(process.cwd(), 'dist/myModule/browser');
const indexHtml = existsSync(join(distFolder, 'index.original.html')) ? 'index.original.html' : 'index';
// Our Universal express-engine 
// (found @ https://github.com/angular/universal/tree/master/modules/express-engine)
server.engine('html', ngExpressEngine({
bootstrap: AppServerModule,
}) as any);
server.set('view engine', 'html');
server.set('views', distFolder);
// Example Express Rest API endpoints
// server.get('/api/**', (req, res) => { });
// Serve static files from /browser
server.get('*.*', express.static(distFolder, {
maxAge: '1y'
}));
// All regular routes use the Universal engine
server.get('*', (req, res) => {
res.render(indexHtml, { req, providers: [{ provide: APP_BASE_HREF, useValue: req.baseUrl }] });
});
return server;
}
function run() {
const port = process.env.PORT || 4000;
// Start up the Node server
const server = app();
server.listen(port, () => {
console.log(`Node Express server listening on http://localhost:${port}`);
});
}
// Webpack will replace 'require' with '__webpack_require__'
// '__non_webpack_require__' is a proxy to Node 'require'
// The below code is to ensure that the server is run only when not requiring the bundle.
declare const __non_webpack_require__: NodeRequire;
const mainModule = __non_webpack_require__.main;
const moduleFilename = mainModule && mainModule.filename || '';
if (moduleFilename === __filename || moduleFilename.includes('iisnode')) {
run();
}
export * from './src/main.server';

谢谢！

Answer 1

我想明白了。在tsconfig.server.json中，我可以编辑两个选项：

"paths": {
"quill": ["src/app/quill.mock.server.ts"]
}

你必须添加文件，就像这样：

"files": [
"src/main.server.ts",
"server.ts",
"src/app/quill.mock.server.ts",
],