更新Angular 7到8时出错

Question

一个月前，我开始了一个 Angular 7 项目。现在我需要将 Angular Material 加入到该项目中并使用“npm i”进行安装。最近发布了版本8，似乎与 Angular 7 不兼容。

因此，我开始更新 Angular 7 → Angular 8: “ng update @angular/cli @angular/core”。但是这会给我带来一个错误提示：

$ng update @angular/cli @angular/core

Package "@ngrx/core" has an incompatible peer dependency to "rxjs" (requires "^5.0.0-beta.12", would install "6.5.2").

Incompatible peer dependencies found. See above.

在这份指南https://update.angular.io/#7.0:8.0中，我找到了以下内容：

"一旦您和您所有的依赖项都升级到RxJS 6，请删除rxjs-compat。"

我应该使用rxjs^6。我需要rxjs-compat才能使用由https://github.com/swagger-api/swagger-codegen生成的swagger客户端。我尝试从package.json中删除"rxjs-compat": "^6.5.2"，但没有成功。 package.json:

{
  "name": "fem",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "$(npm bin)/cypress open",
    "e2e-protractor": "ng e2e",
    "swagger-generate": "swagger-codegen generate -i ./swagger.json -l typescript-angular -o ./src/swagger-client"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^7.2.15",
    "@angular/cdk": "^8.0.1",
    "@angular/common": "~7.2.0",
    "@angular/compiler": "~7.2.0",
    "@angular/core": "~7.2.0",
    "@angular/forms": "~7.2.0",
    "@angular/material": "^8.0.1",
    "@angular/platform-browser": "~7.2.0",
    "@angular/platform-browser-dynamic": "~7.2.0",
    "@angular/router": "~7.2.0",
    "@ngrx/core": "^1.2.0",
    "@ngrx/effects": "^7.4.0",
    "@ngrx/entity": "^7.4.0",
    "@ngrx/router-store": "^7.4.0",
    "@ngrx/schematics": "^7.4.0",
    "@ngrx/store": "^7.4.0",
    "@ngrx/store-devtools": "^7.4.0",
    "angular-in-memory-web-api": "^0.8.0",
    "classlist.js": "^1.1.20150312",
    "core-js": "^2.6.9",
    "date-fns": "^1.30.1",
    "formdata-polyfill": "^3.0.18",
    "hammerjs": "^2.0.8",
    "rxjs": "~6.3.3",
    "rxjs-compat": "^6.5.2",
    "tslib": "^1.9.0",
    "uuid": "^3.3.2",
    "web-animations-js": "^2.3.1",
    "zone.js": "~0.8.26"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.13.0",
    "@angular/cli": "~7.3.9",
    "@angular/compiler-cli": "~7.2.0",
    "@angular/language-service": "~7.2.0",
    "@types/date-fns": "^2.6.0",
    "@types/jasmine": "~2.8.8",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "~8.9.4",
    "@types/uuid": "^3.4.4",
    "codelyzer": "~4.5.0",
    "cypress": "^3.3.1",
    "jasmine-core": "~2.99.1",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~4.0.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~1.1.2",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.4.0",
    "ts-node": "~7.0.0",
    "tslint": "~5.11.0",
    "typescript": "~3.2.2"
  }
}

我的目标是：

1. 在该项目中使用 Angular Material v8
2. 升级到 Angular v8
3. 继续使用生成的 Swagger 客户端

- olefrank

---

优秀的问题！ - Peter Mortensen

我认为swagger-codegen可以在Angular 8中工作，尽管它需要一些帮助。请参见此链接。 - Douglas Liu

Answer 1

升级带有ngrx的angular步骤

卸载ngrx包

运行命令ng update @angular/cli @angular/core

由于ngrx包不可用，迁移angular核心包时将触发错误

为解决问题，重新安装ngrx包

运行命令ng update @angular/core --from 7 --to 8 --migrate-only

完成angular升级

- Hemadri

Answer 2

你需要放弃直接使用 npm 来升级 Angular，拥抱新的 Angular Schematics 自动完成所有必需的工作。

改用 ng update 并从那里更新每个包，你可以使用 npm 更新其他库，但 Angular 和它的库的新范式是通过 Schematics。

拥抱它们的力量并开发自己的代码生成器 ;)

- Mateo Tibaquira