Error triggered using mailer and any template adapter combined with a custom webpack.config.js, reporting that dist/css_inline_bg.wasm not found.

[wxk6b1203]

Describe the bug
When I use a custom webpack.config.js to build the nestjs bundle and start with node dist/main.js, the app reports an error and exit immediately:

Error: ENOENT: no such file or directory, open 'C:\Users\xxx\Documents\Project\xxx-worker\dist\css_inline_bg.wasm'
    at Object.openSync (node:fs:581:18)
    at Object.readFileSync (node:fs:457:35)
    at Object.__decorate (C:\Users\xxx\Documents\Project\xxx-worker\dist\main.js:473906:54)
    at __webpack_require__ (C:\Users\xxx\Documents\Project\xxx-worker\dist\main.js:550543:42)
    at Object.<anonymous> (C:\Users\xxx\Documents\Project\xxx-worker\dist\main.js:472238:22)
    at __webpack_require__ (C:\Users\xxx\Documents\Project\xxx-worker\dist\main.js:550543:42)
    at Object.<anonymous> (C:\Users\xxx\Documents\Project\xxx-worker\dist\main.js:59790:23)
    at __webpack_require__ (C:\Users\xxx\Documents\Project\xxx-worker\dist\main.js:550543:42)
    at Object.defineProperty.value (C:\Users\xxx\Documents\Project\xxx-worker\dist\main.js:10:22)
    at __webpack_require__ (C:\Users\xxx\Documents\Project\xxx-worker\dist\main.js:550543:42) {
  errno: -4058,
  code: 'ENOENT',
  syscall: 'open',
  path: 'C:\\Users\\xxx\\Documents\\Project\\xxx-worker\\dist\\css_inline_bg.wasm'
}

This will happen if I use anyone of the template, e.g.:

    MailerModule.forRootAsync({
      imports: [ConfigModule],
      inject: [ConfigService],
      useFactory: (configService: ConfigService) => ({
        transport: {
          host: configService.get('MAIL_HOST'),
          port: configService.get('MAIL_PORT'),
          secure: !!configService.get('MAIL_SECURE') || false,
          auth: {
            user: configService.get('MAIL_USER'),
            pass: configService.get('MAIL_PASS'),
          },
        },
+        template: {
+         dir: __dirname + '/template',
+         adapter: new EjsAdapter(),
+        },
        defaults: {
          from: '"No Reply" <gg>',
        },
      }),
    }),

then create a webpack.config.js:

/* eslint-disable @typescript-eslint/no-var-requires */
const path = require("path");
const webpack = require("webpack");
const ForkTsCheckerWebpackPlugin = require("fork-ts-checker-webpack-plugin");

module.exports = {
  entry: "./src/main",
  target: "node",
  // 置为空即可忽略webpack-node-externals插件
  externals: {},
  // ts文件的处理
  module: {
    rules: [
      {
        test: /\.ts?$/,
        use: {
          loader: "ts-loader",
          options: { transpileOnly: true }
        },
        exclude: /node_modules/
      }
    ]
  },
  // 打包后的文件名称以及位置
  output: {
    filename: "main.js",
    path: path.resolve(__dirname, "dist")
  },
  resolve: {
    extensions: [".js", ".ts", ".json"]
  },
  plugins: [
    // 需要进行忽略的插件
    new webpack.IgnorePlugin({
      checkResource(resource) {
        const lazyImports = [
          "@nestjs/microservices",
          "@nestjs/microservices/microservices-module",
          "@nestjs/websockets/socket-module",
          "cache-manager",
          "class-validator",
          "class-transformer"
        ];
        if (!lazyImports.includes(resource)) {
          return false;
        }
        try {
          require.resolve(resource, {
            paths: [process.cwd()]
          });
        } catch (err) {
          return true;
        }
        return false;
      }
    }),
    new ForkTsCheckerWebpackPlugin()
  ]
};

and then modify package.json:

  "scripts": {
+    "build": "nest build --webpack --webpackPath=./webpack.config.js",
    "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
    "start": "nest start",
    "start:dev": "nest start --watch",
    "start:debug": "nest start --debug --watch",
    "start:prod": "node dist/main",
    "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
    "test": "jest",
    "test:watch": "jest --watch",
    "test:cov": "jest --coverage",
    "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/jest/bin/jest --runInBand",
    "test:e2e": "jest --config ./test/jest-e2e.json"
  },

and then

npm run build

If I run node dist/main.js, the error is triggered.

Expected behavior
None of the errors should be printed.

Desktop (please complete the following information):

• OS: Windows 11 x64
• Node: v20.10.0
• NPM: 10.20.3

Additional context
If I remove the template, everything goes fine.

[Stranger6667]

I am not sure how to fix it on the mailer side, but if there is anything I can do from the css-inline side, please, let me know.