角度SSR - ReferenceError：未定义元素

Question

我正在开发一个有角度的7项目。我使用服务器端渲染来允许Facebook爬虫正常工作。到目前为止，我已经开发了一些组件并且还没有遇到任何麻烦。但是现在我遇到了问题，因为我正在使用fullcalendar处理组件...

使用ng s为应用程序提供服务没有任何问题。但是当我尝试使用服务器端渲染npm run build:ssr && npm run serve:ssr构建应用程序时，我现在收到以下错误：npm ERR! code ELIFECYCLE

直到现在我做了一个npm install和npm audit fix，但这没有帮助。我认为这个问题来自于我的app.module.ts或app.server.module.ts中的错误配置，但我无法弄明白。

这里是错误消息的内容：

C:myApp\dist\server.js:151900
    var matchesMethod = Element.prototype.matches ||
                        ^

ReferenceError: Element is not defined
    at C:myApp\dist\server.js:151900:25
    at C:myApp\dist\server.js:151801:13
    at Object.<anonymous> (C:myApp\dist\server.js:151803:2)
    at __webpack_require__ (C:myApp\dist\server.js:20:30)
    at Module.<anonymous> (C:myApp\dist\server.js:151309:76)
    at __webpack_require__ (C:myApp\dist\server.js:20:30)
    at Object.@fullcalendar/angular (C:myApp\dist\server.js:134654:18)
    at __webpack_require__ (C:myApp\dist\server.js:131212:30)
    at Module../node_modules/@fullcalendar/angular/fullcalendar-angular.ngfactory.js (C:myApp\dist\server.js:131336:79)
    at __webpack_require__ (C:myApp\dist\server.js:131212:30)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] serve:ssr: `node dist/server`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] 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\myUser\AppData\Roaming\npm-cache\_logs\2019-04-28T20_11_07_675Z-debug.log

npm debug.log的内容：

0 info it worked if it ends with ok
1 verbose cli [ 'C:\\Program Files\\nodejs\\node.exe',
1 verbose cli   'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli   'run',
1 verbose cli   'serve:ssr' ]
2 info using [email protected]
3 info using [email protected]
4 verbose run-script [ 'preserve:ssr', 'serve:ssr', 'postserve:ssr' ]
5 info lifecycle [email protected]~preserve:ssr: [email protected]
6 info lifecycle [email protected]~serve:ssr: [email protected]
7 verbose lifecycle [email protected]~serve:ssr: unsafe-perm in lifecycle true
8 verbose lifecycle [email protected]~serve:ssr: PATH: C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\node-gyp-bin;C:\myApp\node_modules\.bin;C:\ProgramData\Oracle\Java\javapath;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\QuickTime\QTSystem\;C:\xampp\php;C:\ProgramData\ComposerSetup\bin;C:\WINDOWS\System32\OpenSSH\;C:\Program Files\Git\cmd;C:\Program Files (x86)\Bitvise SSH Client;C:\Program Files (x86)\AOMEI Backupper;C:\Program Files\nodejs\;C:\Program Files (x86)\GNU Tools Arm Embedded\7 2018-q2-update\bin;C:\Users\myUser\AppData\Local\Microsoft\WindowsApps;C:\Users\myUser\AppData\Roaming\Composer\vendor\bin;C:\Program Files (x86)\GnuWin32\bin;C:\mingw\bin;C:\Users\Uchendu\AppData\Roaming\npm;C:\Users\myUser\Desktop\Etudes\Math spec\programmation\bin;C:\Program Files\Java\jdk1.8.0_144\bin;
9 verbose lifecycle [email protected]~serve:ssr: CWD: C:myApp
10 silly lifecycle [email protected]~serve:ssr: Args: [ '/d /s /c', 'node dist/server' ]
11 silly lifecycle [email protected]~serve:ssr: Returned: code: 1  signal: null
12 info lifecycle [email protected]~serve:ssr: Failed to exec serve:ssr script
13 verbose stack Error: [email protected] serve:ssr: `node dist/server`
13 verbose stack Exit status 1
13 verbose stack     at EventEmitter.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\index.js:301:16)
13 verbose stack     at EventEmitter.emit (events.js:189:13)
13 verbose stack     at ChildProcess.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\lib\spawn.js:55:14)
13 verbose stack     at ChildProcess.emit (events.js:189:13)
13 verbose stack     at maybeClose (internal/child_process.js:970:16)
13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:259:5)
14 verbose pkgid [email protected]
15 verbose cwd C:\myApp
16 verbose Windows_NT 10.0.17134
17 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "run" "serve:ssr"
18 verbose node v10.15.3
19 verbose npm  v6.4.1
20 error code ELIFECYCLE
21 error errno 1
22 error [email protected] serve:ssr: `node dist/server`
22 error Exit status 1
23 error Failed at the [email protected] serve:ssr script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]

有什么建议我可以解决这个问题吗？

Answer 1

问题来自第三方库。

https://github.com/fullcalendar/fullcalendar-angular

ReferenceError: Element is not defined
    at C:myApp\dist\server.js:151900:25
    at C:myApp\dist\server.js:151801:13
    at Object.<anonymous> (C:myApp\dist\server.js:151803:2)
    at __webpack_require__ (C:myApp\dist\server.js:20:30)
    at Module.<anonymous> (C:myApp\dist\server.js:151309:76)
    at __webpack_require__ (C:myApp\dist\server.js:20:30)
    at Object.@fullcalendar/angular (C:myApp\dist\server.js:134654:18)
    at __webpack_require__ (C:myApp\dist\server.js:131212:30)
    at Module../node_modules/@fullcalendar/angular/fullcalendar-angular.ngfactory.js (C:myApp\dist\server.js:131336:79)
    at __webpack_require__ (C:myApp\dist\server.js:131212:30)

看起来它没有导入日历组件的组件工厂，这让我觉得你缺少一些节点依赖。

确认您已安装@fullcalendar/core @fullcalendar/daygrid软件包。

该库正在使用另一个JavaScript库（“核心”包），它不是为服务器端呈现而设计的。虽然您可以编译项目。如果“核心”库中有任何无法在NodeJS上运行的内容，那么它可能无法编译或无法运行。