Angular TypeError:对象原型只能是对象或null:未定义

Question

在我尝试安装ExcelJs (npm install --save exceljs)之前，我有一个正在运行的项目。

在那之后，我开始收到各种错误，比如Cannot read property ‘Minus’ of undefined和Cannot find module 'postcss-value-something'，这些错误都是通过npm iing解决的，无论缺少的是什么。

然而，在此之后，我现在收到TypeError: Object prototype may only be an Object or null: undefined。

在遇到这些问题后，我删除了excelJ，希望能恢复一些正常状态，然而，没有这样的运气。

完整错误如下：

    at setPrototypeOf (<anonymous>)
    at Object.__extends (F:\Honeycomb\Honey\Varroa\node_modules\@angular\compiler-cli\node_modules\tslib\tslib.js:68:9)
    at F:\Honeycomb\Honey\Varroa\node_modules\@angular\compiler-cli\src\ngtsc\indexer\src\template.js:118:17
    at F:\Honeycomb\Honey\Varroa\node_modules\@angular\compiler-cli\src\ngtsc\indexer\src\template.js:325:6
    at F:\Honeycomb\Honey\Varroa\node_modules\@angular\compiler-cli\src\ngtsc\indexer\src\template.js:3:17
    at Object.<anonymous> (F:\Honeycomb\Honey\Varroa\node_modules\@angular\compiler-cli\src\ngtsc\indexer\src\template.js:9:3)
    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:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
    at Module.require (internal/modules/cjs/loader.js:690:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at F:\Honeycomb\Honey\Varroa\node_modules\@angular\compiler-cli\src\ngtsc\indexer\src\transform.js:21:22
    at F:\Honeycomb\Honey\Varroa\node_modules\@angular\compiler-cli\src\ngtsc\indexer\src\transform.js:10:17
    at Object.<anonymous> (F:\Honeycomb\Honey\Varroa\node_modules\@angular\compiler-cli\src\ngtsc\indexer\src\transform.js:16:3)

我的package.json的内容如下：

 "dependencies": {
    "@agm/core": "^1.1.0",
    "@agm/js-marker-clusterer": "^1.0.0-beta.3",
    "@angular/animations": "^8.0.0",
    "@angular/cdk": "^7.3.6",
    "@angular/common": "^8.0.0",
    "@angular/compiler": "^8.0.0",
    "@angular/core": "^8.0.0",
    "@angular/forms": "^8.0.0",
    "@angular/http": "^7.2.16",
    "@angular/material": "^7.3.6",
    "@angular/platform-browser": "^8.0.0",
    "@angular/platform-browser-dynamic": "^8.0.0",
    "@angular/platform-server": "^8.0.0",
    "@angular/router": "^8.0.0",
    "@angular/upgrade": "^8.2.14",
    "@auth0/angular-jwt": "^2.0.0",
    "@types/angular": "^1.6.47",
    "angular-calendar": "^0.28.16",
    "angular2-text-mask": "8.0.4",
    "angular2-toaster": "^8.0.0",
    "animate.css": "^3.7.0",
    "bootstrap": "^4.1.2",
    "brace": "0.11.0",
    "chart.js": "^2.7.3",
    "codemirror": "5.33.0",
    "copy-webpack-plugin": "^4.5.1",
    "core-js": "2.5.3",
    "dragula": "3.7.2",
    "file-saver": "^1.3.8",
    "flag-icon-css": "2.9.0",
    "font-awesome": "^4.7.0",
    "highcharts": "7.0.2",
    "highcharts-angular": "2.4.0",
    "highcharts-boost": "^0.1.7",
    "html2canvas": "^1.0.0-alpha.12",
    "intl": "^1.2.5",
    "js-marker-clusterer": "^1.0.0",
    "jspdf": "^1.5.3",
    "lodash": "^4.17.10",
    "moment": "^2.20.1",
    "ng-mat-select-infinite-scroll": "^2.0.0",
    "ng-select": "^1.0.2",
    "ng2-ace-editor": "^0.3.9",
    "ng2-charts": "1.6.0",
    "ng2-completer": "^3.0.0-beta.2",
    "ng2-dragula": "1.5.0",
    "ng2-file-upload": "1.2.1",
    "ng2-select": "^2.0.0",
    "ng2-validation": "^4.2.0",
    "ngx-bootstrap": "2.0.0-rc.0",
    "ngx-loading": "^8.0.0",
    "ngx-quill": "^8.1.8",
    "normalize.css": "^7.0.0",
    "oidc-client": "^1.5.1",
    "postcss-value-parser": "^4.1.0",
    "primeicons": "4.0.0",
    "primeng": "9.1.0",
    "raven-js": "^3.26.2",
    "rxjs": "6.2.1",
    "rxjs-compat": "^6.2.1",
    "simple-line-icons": "^2.4.1",
    "spinkit": "1.2.5",
    "ts-helpers": "1.1.2",
    "ts-overlapping-marker-spiderfier": "^1.0.2",
    "tslib": "^1.9.0",
    "xlsx": "0.13.3",
    "zone.js": "^0.9.1"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^0.803.24",
    "@angular/cli": "^8.3.28",
    "@angular/compiler-cli": "^10.0.2",
    "@angular/language-service": "^10.0.2",
    "@fortawesome/fontawesome-free": "^5.6.1",
    "@types/core-js": "^2.5.3",
    "@types/file-saver": "0.0.1",
    "@types/googlemaps": "3.37.7",
    "@types/highcharts": "5.0.36",
    "@types/jasmine": "^3.5.11",
    "@types/jasminewd2": "2.0.3",
    "@types/jquery": "^3.5.0",
    "@types/lodash": "^4.14.110",
    "@types/luxon": "^1.11.1",
    "@types/node": "^14.0.19",
    "codelyzer": "^6.0.0",
    "jasmine-core": "^3.5.0",
    "jasmine-spec-reporter": "^5.0.2",
    "jasminewd2": "^2.2.0",
    "karma": "^5.1.0",
    "karma-chrome-launcher": "^3.1.0",
    "karma-cli": "^2.0.0",
    "karma-coverage-istanbul-reporter": "1.3.3",
    "karma-jasmine": "^3.3.1",
    "karma-jasmine-html-reporter": "^1.5.4",
    "karma-remap-istanbul": "^0.6.0",
    "protractor": "^7.0.0",
    "rxjs-tslint": "^0.1.8",
    "ts-node": "4.1.0",
    "tslint": "^6.1.2",
    "typescript": "^3.4.5",
    "webpack": "^4.43.0",
    "webpack-bundle-analyzer": "^3.1.0"
  }

到目前为止，我读到的所有内容都表明cli /编译器cli有问题，但我的印象是，^意味着它会在必要时更新，我还试图删除^，以防该版本超出了我的项目支持的Angular版本。

ng v返回以下内容：

Angular CLI: 8.3.28
Node: 10.16.0
OS: win32 x64
Angular: 8.0.0
... animations, common, compiler, core, forms, platform-browser
... platform-browser-dynamic, platform-server, router

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.803.28
@angular-devkit/build-angular     0.803.28
@angular-devkit/build-optimizer   0.803.28
@angular-devkit/build-webpack     0.803.28
@angular-devkit/core              8.3.28
@angular-devkit/schematics        8.3.28
@angular/cdk                      7.3.7
@angular/cli                      8.3.28
@angular/compiler-cli             10.0.2
@angular/http                     7.2.16
@angular/language-service         10.0.2
@angular/material                 7.3.7
@angular/upgrade                  8.2.14
@ngtools/webpack                  8.3.28
@schematics/angular               8.3.28
@schematics/update                0.803.28
rxjs                              6.2.1
typescript                        3.9.6
webpack                           4.43.0

我怀疑这仍然与编译器/cli版本甚至typescript有关，就像我在其他地方看到的那样，但是似乎没有任何关于哪个版本应该与什么一起使用的指南。

任何帮助都是非常感谢的。

Answer 1

你的angular包版本太不同步了！不知何故，您的编译器-cli是10.0.2，但您的http是7.2.16。是怎么发生的？无论如何，升级你的angular最好的方法就是使用ng update @angular/cli，ng update @angular/core和ng update @angular/material。

这会将其更新到版本10，并有望进行适当的迁移。任何以@angular开头的代码都应该有相同的主版本。在您的示例中，您将v7与v8和v10混合在一起。再加上v9，你就有了一个四重奏。

如果使用cli更新不起作用，您最好使用以下步骤：

将源代码保存在ng new xxx

• copy下，并保存您认为值得保存的任何其他文件，如package.json以检查您正在使用的任何非angular包。

• 通过使用ng new xxx

• copy
• src folder
• upgrade新项目来删除全局项目的整个项目，但跳过main.ts、polyfills.ts和D20文件。由于最新的angular cli version
• optional:有重大更改，因此请使用您可能已做的任何自定义更改来更新这些未复制的文件，如package.json

从那时起，总是使用ng update来升级任何angular模块，因为这还包括必要的代码迁移。

顺便说一句，如果您使用npm update，^将只更新已安装软件包的次要版本。阅读更多here