Question

我正在遵循官方文档进行升级。

此步骤已完成，没有任何错误。

ng update @angular/core@8 @angular/cli@8

下一步失败。

ng update @angular/core @angular/cli
The installed Angular CLI version is older than the latest stable version.
Installing a temporary version to perform the update.
Installing packages for tooling via npm.
Installed packages for tooling via npm.
Using package manager: 'npm'
Collecting installed dependencies...
Found 45 dependencies.
Fetching dependency metadata from registry...
                  Package "@angular/core" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@angular/animations" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@angular/compiler" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@angular/forms" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@angular/common" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@angular/platform-browser" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@angular/compiler-cli" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@angular/router" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@angular/platform-browser-dynamic" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@ngtools/webpack" has an incompatible peer dependency to "typescript" (requires ">=3.4 < 3.6", would install "3.7.5").
Incompatible peer dependencies found.
Peer dependency warnings when installing dependencies means that those dependencies might not work correctly together.
You can use the '--force' option to ignore incompatible peer dependencies and instead address these warnings later.

我检查了node_modules并安装了正确版本的tslib。我手动添加了tslib条目，然后运行npm install来查看错误是否消失。

  "dependencies": {
    "@angular/animations": "^8.2.14",
    "@angular/common": "^8.2.14",
    "@angular/compiler": "^8.2.14",
    "@angular/core": "^8.2.14",
    "@angular/forms": "^8.2.14",
    "@angular/language-service": "^8.2.14",
    "@angular/platform-browser": "^8.2.14",
    "@angular/platform-browser-dynamic": "^8.2.14",
    "@angular/router": "^8.2.14",
    "@ng-bootstrap/ng-bootstrap": "^5.3.0",
    "classlist.js": "^1.1.20150312",
    "core-js": "^3.6.4",
    "npm": "^6.13.7",
    "rxjs": "^6.5.4",
    "web-animations-js": "^2.3.2",
    "zone.js": "~0.9.1"
  },
  "devDependencies": {
    "@angular-devkit/architect": "^0.803.25",
    "@angular-devkit/build-angular": "^0.803.25",
    "@angular-devkit/build-optimizer": "^0.803.25",
    "@angular-devkit/build-webpack": "^0.803.25",
    "@angular-devkit/core": "^8.3.25",
    "@angular-devkit/schematics": "^8.3.25",
    "@angular/cli": "^8.3.25",
    "@angular/compiler-cli": "^8.2.14",
    "@ngtools/webpack": "^8.3.25",
    "@schematics/angular": "^8.3.25",
    "@schematics/update": "^0.803.25",
    "@types/jasmine": "^3.5.4",
    "@types/jasminewd2": "^2.0.8",
    "@types/node": "^12.12.27",
    "tslib": "^1.10.0",
    "codelyzer": "^5.2.1",
    "jasmine-core": "^3.5.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "^4.4.1",
    "karma-chrome-launcher": "~3.1.0",
    "karma-coverage-istanbul-reporter": "^2.1.1",
    "karma-jasmine": "~2.0.1",
    "karma-jasmine-html-reporter": "^1.5.2",
    "protractor": "^5.4.3",
    "rxjs-tslint": "^0.1.7",
    "ts-node": "^8.6.2",
    "tslint": "^5.20.1",
    "typescript": "~3.4",
    "webpack": "^4.41.6",
    "webpack-dev-server": "^3.10.3"
  }

ng v输出

Angular CLI: 8.3.25
Node: 12.13.0
OS: win32 x64
Angular: 8.2.14
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.803.24
@angular-devkit/build-angular     0.803.25
@angular-devkit/build-optimizer   0.803.24
@angular-devkit/build-webpack     0.803.25
@angular-devkit/core              8.3.24
@angular-devkit/schematics        8.3.24
@angular/cli                      8.3.25
@ngtools/webpack                  8.3.24
@schematics/angular               8.3.24
@schematics/update                0.803.24
rxjs                              6.5.4
typescript                        3.4.5
webpack                           4.41.5

我没有尝试使用--force选项。还有另一种方法吗？

Answer 1

看起来像您浏览了其中一个错误：

Package "@ngtools/webpack" has an incompatible peer dependency to "typescript" (requires ">=3.4 < 3.6", would install "3.7.5").

尝试使用与TypeScript 3.4至3.5兼容的@ ngtools / webpack较低版本。

或者，将package.json中的TypeScript版本更新为3.7.5并运行npm update，那么您应该能够更新@ angular / core和@ angular / cli。

Answer 2

ng update @angular/core @angular/cli --force 可能需要带有 --force 标志，请参阅 original answer of an Angular core member。

Answer 3

就我而言，解决方法是在运行 ng update [package] 时使用 --force 标志来覆盖依赖关系问题。

无论如何这都会升级包，您可以使用更新的依赖项验证您的应用。如果该第三方依赖项仍因重大更改而需要更新，则需要更新该包。

Answer 4

就我而言，接受的答案不起作用。所以我执行了以下命令，它对我有用。

npm install @angular/cli@latest @angular-devkit/build-angular@latest  --save-dev

但我是在我的本地项目之一上这样做的，而不是系统上的全局角度版本。

发现不兼容的对等依赖项-将Angular从8升级到9

4 个答案: