Question

我刚刚通过运行npm update更新了我的角度2应用程序，不幸的是我的应用程序不再运行，尽管终端中没有显示错误，我的控制台中有很多错误。无论如何我可以撤销更新吗？

//错误

The stylesheet http://localhost:4200/app/assets/js/jquery.min.js was not loaded because its MIME type, “application/javascript”, is not “text/css”. localhost:4200
GET 
http://localhost:4200/node_modules/zone.js/dist/zone.js [HTTP/1.1 404 Not Found 5ms]
GET 
http://localhost:4200/systemjs.config.js [HTTP/1.1 404 Not Found 8ms]
ReferenceError: System is not defined[Learn More]  localhost:4200:29:5
TypeError: f is undefined[Learn More]  scripts.bundle.js%20line%2034%20%3E%20eval:15:3
Unhandled Promise rejection: Failed to load ../bootstrap/css/bootstrap.min.css ; Zone: <root> ; Task: Promise.then ; Value: Failed to load ../bootstrap/css/bootstrap.min.css undefined  vendor.bundle.js:129451:13
Object { __zone_symbol__error: Error, fileName: Getter, lineNumber: Getter, columnNumber: Getter, message: Getter, name: Getter, stack: Getter, originalStack: Getter, zoneAwareStack: Getter, toString: createMethodProperty/props[key].value(), 5 more… }  vendor.bundle.js:129453:9

//的package.json

{
  "name": "project",
  "version": "0.0.0",
  "license": "MIT",
  "angular-cli": {},
  "scripts": {
    "start": "ng serve",
    "lint": "tslint \"src/**/*.ts\"",
    "test": "ng test",
    "pree2e": "webdriver-manager update",
    "e2e": "protractor"
  },
  "private": true,
  "dependencies": {
    "@angular/common": "~2.4.8",
    "@angular/compiler": "~2.4.8",
    "@angular/core": "~2.4.8",
    "@angular/forms": "~2.4.8",
    "@angular/http": "~2.4.8",
    "@angular/platform-browser": "~2.4.8",
    "@angular/platform-browser-dynamic": "~2.4.8",
    "@angular/router": "~3.4.8",
    "@types/lodash": "^4.14.50",
    "angular-2-data-table": "^0.1.2",
    "angular2-datatable": "^0.5.2",
    "core-js": "^2.4.1",
    "lodash": "^4.17.4",
    "ng2-date-picker": "^0.2.1",
    "ng2-file-upload": "^1.2.0",
    "ng2-modal": "0.0.25",
    "ng2-pagination": "^2.0.1",
    "primeng": "^2.0.1",
    "rxjs": "5.2.0",
    "tinymce": "^4.5.2",
    "ts-helpers": "^1.1.1",
    "zone.js": "^0.7.7"
  },
  "devDependencies": {
    "@types/jasmine": "^2.2.30",
    "@types/node": "^7.0.5",
    "angular-cli": "1.0.0-beta.28.3",
    "codelyzer": "3.0.0-beta.0",
    "jasmine-core": "2.5.2",
    "jasmine-spec-reporter": "3.2.0",
    "karma": "1.5.0",
    "karma-chrome-launcher": "^2.0.0",
    "karma-cli": "^1.0.1",
    "karma-jasmine": "^1.0.2",
    "karma-remap-istanbul": "^0.6.0",
    "protractor": "5.1.1",
    "ts-node": "2.1.0",
    "tslint": "4.4.2",
    "typescript": "~2.2.1"
  }
}

Answer 1

删除 node_modules 目录
从您的版本恢复以前的 package.json 文件控制系统
运行 npm install

您还可以删除并重新创建 dist 或生成的文件文件夹并重建。

编辑：您可以尝试以@msanford的方式更新软件包，但请注意，有时它仍会升级到不兼容的版本。我总是尝试使用维护良好的种子版本的包已知可以很好地协同工作。特别适用于zonejs。

Answer 2

如果您认为应该更新已安装的节点模块，并且未修改，则package.json进入package.json并（暂时）删除{{1版本号之前的{}和^;再试一次~。

这将指示npm安装指定的确切修补程序版本，并且不会尝试将其升级到最新的修补程序（npm install）或最新的次要（~）版本。

当您运行^时，告诉npm去获取您指定的每个软件包的最新版本，最多允许最新的补丁/次要，如〜所示或^。您可能已经通过这种方式引入了不兼容性。

如果您更改了npm update文件，Ben的建议是合适的，如果您这样做，请尝试他的建议。

如何还原Angular 2更新

2 个答案: