安装 AWS CDK 构件库时出现 "ERESOLVE 无法解析依赖树" 错误。

Question

$ npm i @aws-cdk/aws-ec2
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR! 
npm ERR! While resolving: cdk_sample@0.1.0
npm ERR! Found: @aws-cdk/core@1.95.0
npm ERR! node_modules/@aws-cdk/core
npm ERR!   @aws-cdk/core@"1.95.0" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer @aws-cdk/core@"1.95.1" from @aws-cdk/aws-iam@1.95.1
npm ERR! node_modules/@aws-cdk/aws-iam
npm ERR!   peer @aws-cdk/aws-iam@"1.95.1" from @aws-cdk/aws-ec2@1.95.1
npm ERR!   node_modules/@aws-cdk/aws-ec2
npm ERR!     @aws-cdk/aws-ec2@"*" from the root project
npm ERR!   peer @aws-cdk/aws-iam@"1.95.1" from @aws-cdk/aws-cloudwatch@1.95.1
npm ERR!   node_modules/@aws-cdk/aws-cloudwatch
npm ERR!     peer @aws-cdk/aws-cloudwatch@"1.95.1" from @aws-cdk/aws-ec2@1.95.1
npm ERR!     node_modules/@aws-cdk/aws-ec2
npm ERR!       @aws-cdk/aws-ec2@"*" 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/sean/.npm/eresolve-report.txt for a full report.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/sean/.npm/_logs/2021-03-27T00_41_58_124Z-debug.log
sean@desktop:~/WebstormProjects/cdkSample$ npm i @aws-cdk/aws-ec2
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR! 
npm ERR! While resolving: cdk_sample@0.1.0
npm ERR! Found: @aws-cdk/core@1.95.0
npm ERR! node_modules/@aws-cdk/core
npm ERR!   @aws-cdk/core@"1.95.0" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer @aws-cdk/core@"1.95.1" from @aws-cdk/aws-iam@1.95.1
npm ERR! node_modules/@aws-cdk/aws-iam
npm ERR!   peer @aws-cdk/aws-iam@"1.95.1" from @aws-cdk/aws-ec2@1.95.1
npm ERR!   node_modules/@aws-cdk/aws-ec2
npm ERR!     @aws-cdk/aws-ec2@"*" from the root project
npm ERR!   peer @aws-cdk/aws-iam@"1.95.1" from @aws-cdk/aws-cloudwatch@1.95.1
npm ERR!   node_modules/@aws-cdk/aws-cloudwatch
npm ERR!     peer @aws-cdk/aws-cloudwatch@"1.95.1" from @aws-cdk/aws-ec2@1.95.1
npm ERR!     node_modules/@aws-cdk/aws-ec2
npm ERR!       @aws-cdk/aws-ec2@"*" 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/sean/.npm/eresolve-report.txt for a full report.

< p > --force选项听起来并不理想。应该采取什么措施来解决上游依赖冲突？我知道AWS CDK在核心库和构建库之间匹配包版本时非常严格。

// project generated via $ cdk init app --language typescript
  "devDependencies": {
    "@aws-cdk/assert": "1.95.0",
    "@types/jest": "^26.0.10",
    "@types/node": "10.17.27",
    "aws-cdk": "1.95.0",
    "jest": "^26.4.2",
    "ts-jest": "^26.2.0",
    "ts-node": "^9.0.0",
    "typescript": "~3.9.7"
  },
  "dependencies": {
    "@aws-cdk/core": "1.95.0",
    "source-map-support": "^0.5.16"
  }

- Sean D

---

看起来很奇怪。您可以尝试安装与您的 CDK 核心相同的版本吗? npm install @aws-cdk/aws-ec2@1.95.0 - Balu Vyamajala

@Balu，问题已解决，谢谢！ - Sean D

Answer 1

从评论中可以得知，安装与aws-cdk和@aws-cdk/core相同版本的依赖项可以解决此问题。

npm install @aws-cdk/aws-ec2@1.95.0

- Balu Vyamajala