javascript - npm 在 ionic angular 中未满足对等依赖

Question

我正在尝试添加 Angular 谷歌地图包

npm install @agm/core

我收到未满足的对等依赖项错误，但我不明白为什么。这是否意味着我项目中的 angular 版本对于 agm/core 包来说太新了？以下是问题:

+-- @agm/core@1.0.0-beta.1
+-- UNMET PEER DEPENDENCY @angular/common@4.1.3
`-- UNMET PEER DEPENDENCY @angular/core@4.1.3


npm WARN ajv-keywords@2.1.0 requires a peer of ajv@>=5.0.0 but none was installed.
npm WARN angular2-google-maps@0.17.0 requires a peer of @angular/common@^2.3.1 but none was installed.
npm WARN angular2-google-maps@0.17.0 requires a peer of @angular/core@^2.3.1 but none was installed.

这是我的 package.json

{
  "name": "dispatcher",
  "version": "0.0.1",
  "author": "Ionic Framework",
  "homepage": "http://ionicframework.com/",
  "private": true,
  "scripts": {
    "clean": "ionic-app-scripts clean",
    "build": "ionic-app-scripts build",
    "lint": "ionic-app-scripts lint",
    "ionic:build": "ionic-app-scripts build",
    "ionic:serve": "ionic-app-scripts serve"
  },
  "dependencies": {
    "@angular/common": "4.1.3",
    "@angular/compiler": "4.1.3",
    "@angular/compiler-cli": "4.1.3",
    "@angular/core": "4.1.3",
    "@angular/forms": "4.1.3",
    "@angular/http": "4.1.3",
    "@angular/platform-browser": "4.1.3",
    "@angular/platform-browser-dynamic": "4.1.3",
    "@ionic-native/core": "3.12.1",
    "@ionic-native/splash-screen": "3.12.1",
    "@ionic-native/status-bar": "3.12.1",
    "@ionic/storage": "2.0.1",
    "ionic-angular": "3.6.1",
    "ionicons": "3.0.0",
    "rxjs": "5.4.0",
    "sw-toolbox": "3.6.0",
    "zone.js": "0.8.12"
  },
  "devDependencies": {
    "@ionic/app-scripts": "2.1.4",
    "typescript": "2.3.4"
  },
  "description": "An Ionic project"
}

所以我肯定有@angular/common@4.13 && @angular/core@4.13，我猜这个包有未满足的依赖关系？这似乎表明较新的版本可以使用 ^ 字符。有没有办法让这个包与我的项目一起工作，或者是否有一个替代的谷歌地图包可以与我的项目一起工作？也许是一个基本的 npm 问题。

包裹网站:https://angular-maps.com/ 这意味着它对 angular2+ 有好处

Answer 1

您好，我想更新一下，我找到了错误的原因。从警告中可以看出，未满足的依赖项与我尝试安装的早期版本的 angular google maps 包有关。卸载所有谷歌地图包并重新安装@agm/core --save 后，它工作正常。仍然是一个令人困惑的错误消息，奇怪的是 npm install 在安装时生成所有未满足的依赖项问题，即使与相关安装无关。我还 npm 安装了 ajv，因为警告警告它是一个依赖项。

因此，作为对那些认为自己得到了不合理的 npm 未满足依赖项的人的建议:
1. 确保错误消息与您尝试安装的包相关，而不是您之前安装的包。
2. 卸载(使用 npm uninstall)一个包的多个版本，只使用你需要的那个。