错误：在 angular firebase 通用中找不到模块“require("./server/main")”

Question

这是 cmd npm run serve 上的错误：ssr

 I'm getting the error 'Can't find module 'require("./server/main") while hit the command "npm run server:ssr".
    but "npm run build:ssr" execute successfully.
    Please Help anyone.

    PS C:\Users\DELL\ion\portfolio\portfolio> npm run serve:ssr

    > portfolio@0.0.0 serve:ssr C:\Users\DELL\ion\portfolio\portfolio
    > node dist/server

    internal/modules/cjs/loader.js:628
        throw err;
        ^

    Error: Cannot find module 'require("./server/main")'
    Require stack:
    - C:\Users\DELL\ion\portfolio\portfolio\dist\server.js
        at Function.Module._resolveFilename (internal/modules/cjs/loader.js:625:15)
        at Function.Module._load (internal/modules/cjs/loader.js:527:27)
        at Module.require (internal/modules/cjs/loader.js:683:19)
        at require (internal/modules/cjs/helpers.js:16:16)
        at webpackUniversalModuleDefinition 
        (C:\Users\DELL\ion\portfolio\portfolio\dist\server.js:3:28)
        at Object.<anonymous> 
        (C:\Users\DELL\ion\portfolio\portfolio\dist\server.js:10:3)
        at Module._compile (internal/modules/cjs/loader.js:776:30)
        at Object.Module._extensions..js 
       (internal/modules/cjs/loader.js:787:10)
        at Module.load (internal/modules/cjs/loader.js:643:32)
        at Function.Module._load (internal/modules/cjs/loader.js:556:12) 
     {
      code: 'MODULE_NOT_FOUND',
      requireStack: [ 
    'C:\\Users\\DELL\\ion\\portfolio\\portfolio\\dist\\server.js' ]
    }

我还尝试在 server.ts 文件中使用 import 而不是 const

    npm ERR! code ELIFECYCLE
    npm ERR! errno 1
    npm ERR! portfolio@0.0.0 serve:ssr: `node dist/server`
    npm ERR! Exit status 1
    npm ERR!
    npm ERR! Failed at the portfolio@0.0.0 serve:ssr script.
    npm ERR! This is probably not a problem with npm. There is likely 
    additional logging output above.

    npm ERR! A complete log of this run can be found in:
    npm ERR!     C:\Users\DELL\AppData\Roaming\npm-cache\_logs\2019-08- 
    31T17_48_40_065Z-debug.log

请帮我解决这个问题，这是 angular firebase 通用的最后一步

Answer 1

我收到了同样的错误，并将其跟踪到 webpack.server.config.js 中的几行

  externals: {
    './dist/server/main': 'require("./server/main")'
  },

注释掉这些会稍微增加我的包大小，但我不再在 Lambda 函数中收到该错误。我还没有弄清楚为什么会导致错误，但也许它会让你再次继续，直到我们找出原因。