无法安装Angular Flex-layout：依赖冲突问题求助

问题原因 #

你的项目基于Angular 11，当前@angular/cdk版本为11.2.13，直接执行npm install @angular/flex-layout时，npm默认拉取最新版@angular/flex-layout@14.0.0-beta.41，该版本要求对等依赖@angular/cdk@^14.0.0，版本不匹配导致依赖树解析失败。使用--force强制安装后，版本不兼容引发项目启动异常。

完整报错日志 #

gonzalo@gonzalo-Inspiron-15-3567:~/Desktop/Programacion-Verdadero/Angular/05 - heroesApp$ npm install @angular/flex-layout
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR! 
npm ERR! While resolving: heroes-app@0.0.0
npm ERR! Found: @angular/cdk@11.2.13
npm ERR! node_modules/@angular/cdk
npm ERR!   @angular/cdk@"^11.2.13" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer @angular/cdk@"^14.0.0" from @angular/flex-layout@14.0.0-beta.41
npm ERR! node_modules/@angular/flex-layout
npm ERR!   @angular/flex-layout@"*" from the root project
npm ERR! 
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR! 
npm ERR! See /home/gonzalo/.npm/eresolve-report.txt for a full report.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/gonzalo/.npm/_logs/2022-12-29T16_35_53_034Z-debug-0.log

项目package.json配置 #

{
  "name": "heroes-app",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "~11.0.1",
    "@angular/cdk": "^11.2.13",
    "@angular/common": "~11.0.1",
    "@angular/compiler": "~11.0.1",
    "@angular/core": "~11.0.1",
    "@angular/forms": "~11.0.1",
    "@angular/material": "^11.0.3",
    "@angular/platform-browser": "~11.0.1",
    "@angular/platform-browser-dynamic": "~11.0.1",
    "@angular/router": "~11.0.1",
    "rxjs": "~6.6.0",
    "tslib": "^2.0.0",
    "zone.js": "~0.10.2"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.1100.2",
    "@angular/cli": "~11.0.2",
    "@angular/compiler-cli": "~11.0.1",
    "@types/jasmine": "~3.6.0",
    "@types/node": "^12.11.1",
    "codelyzer": "^6.0.0",
    "jasmine-core": "~3.6.0",
    "jasmine-spec-reporter": "~5.0.0",
    "karma": "~5.1.0",
    "karma-chrome-launcher": "~3.1.0",
    "karma-coverage": "~2.0.3",
    "karma-jasmine": "~4.0.0",
    "karma-jasmine-html-reporter": "^1.5.0",
    "protractor": "~7.0.0",
    "ts-node": "~8.3.0",
    "tslint": "~6.1.0",
    "typescript": "~4.0.2"
  }
}

解决方案 #

方案1：安装适配Angular 11的Flex-Layout版本 #

Angular Flex-Layout的版本与Angular主版本严格对齐，直接安装11.x版本即可解决依赖冲突：

npm install @angular/flex-layout@11.0.0-beta.33

该版本的对等依赖要求@angular/cdk@^11.0.0，与当前项目的CDK版本完全兼容。

方案2：升级Angular项目至14.x版本（可选） #

若计划升级项目整体版本，可按以下步骤操作：

1. 全局升级Angular CLI到14版本：

npm install -g @angular/cli@14

2. 升级项目核心依赖：

ng update @angular/core@14 @angular/cli@14

3. 同步升级CDK和Angular Material：

ng update @angular/cdk@14 @angular/material@14

4. 安装最新版Flex-Layout：

npm install @angular/flex-layout@14

注意：升级前建议备份项目，部分旧版API可能存在变更，需适配调整。

内容的提问来源于stack exchange，提问作者Gonzalo