dependencies - 有没有安装依赖项的对等依赖项的方法？

Question

在运行 npm install 时，我们得到:

npm WARN ajv-keywords@2.1.1 requires a peer of ajv@^5.0.0 but none is installed. You must install peer dependencies yourself

我们最初认为问题是需要安装提到的对等依赖项 - ajv - 但这并没有解决问题。
重要的是简单地理解这个问题。鉴于我们确实满足了 AFAICT 的依赖关系，错误消息甚至意味着什么？
package.json 有这个:

  "dependencies": {
    "ajv": "^6.0.0"
  },

package-lock.json 有这个:

    "ajv": {
      "version": "6.2.1",
      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.2.1.tgz",
      "integrity": "sha1-KKarxJOiq+D7TIUHrK7bQ/pVBnE=",
      "requires": {
        "fast-deep-equal": "1.1.0",
        "fast-json-stable-stringify": "2.0.0",
        "json-schema-traverse": "0.3.1"
      }
    },
    "ajv-keywords": {
      "version": "2.1.1",
      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-2.1.1.tgz",
      "integrity": "sha1-YXmX/F9gV2iUxDX5QNgZ4TW4B2I=",
      "dev": true
    }

npm-install-peers给

This package doesn't seem to have any peerDependencies

该工具的维护者说

It's designed to install the direct peer dependencies of your project,not the peer dependencies of your dependencies

这意味着问题是比顶层更深的依赖。
有没有安装依赖的依赖的工具？

Answer 1

安装请求的特定 AJV 版本:

npm install ajv@^5.0.0 --save

( ^ 确保仅为软件包安装较小的、向后兼容的更新，例如 5.1.0)