node.js - 未满足的对等依赖 D3.js 和 Angular 2

Question

我有一个现有的 Angular 2 项目，我正在尝试开始将一些 D3.js 集成到我的项目中。我是 Angular 的新手，这将是我第一次使用 D3。我将遵循本教程:https://keathmilligan.net/create-reusable-chart-components-with-angular-2-and-d3-js-version-4/

我正在运行命令 npm install --save d3，我得到:

├── UNMET PEER DEPENDENCY @angular/compiler@2.2.3
├── UNMET PEER DEPENDENCY @angular/compiler-cli@2.2.3
├── UNMET PEER DEPENDENCY @angular/core@2.2.3
└── d3@4.4.1

...然后

npm WARN @ngtools/webpack@1.2.1 requires a peer of @angular/compiler@^2.3.1 but none was installed.
npm WARN @ngtools/webpack@1.2.1 requires a peer of @angular/compiler-cli@^2.3.1 but none was installed.
npm WARN @ngtools/webpack@1.2.1 requires a peer of @angular/core@^2.3.1 but none was installed.
npm WARN @ngtools/webpack@1.2.1 requires a peer of @angular/tsc-wrapped@^0.5.0 but none was installed.
npm WARN tslint-loader@2.1.5 requires a peer of tslint@^3.0.0 but none was installed.

一方面，当我看到"UNMET PEER DEPENDENCY" 时，我想我仍然不太清楚它的真正含义。这只是一个警告，还是表明某些东西真的坏了？我的项目目前正在运行(但我还没有开始使用 D3 进行编码)...是否仅仅是安装了错误的版本？我已经采取了通过 npm update --save 更新所有内容的步骤，NPM 确实为我找到了一些更新，但我仍然遇到同样的问题。

但我的主要问题是，我正在安装 D3js，它不应该完全独立于 Angular 吗？为什么当我安装一些不相关的东西时，NPM 对 Angular 的东西大喊大叫？

这是我的 package.json 后更新:

  "name": "cl-test2",
  "version": "0.0.0",
  "license": "MIT",
  "angular-cli": {},
  "scripts": {
    "start": "ng serve",
    "lint": "tslint \"src/**/*.ts\"",
    "test": "ng test",
    "pree2e": "webdriver-manager update",
    "e2e": "protractor"
  },
  "private": true,
  "dependencies": {
    "@angular/common": "2.2.3",
    "@angular/compiler": "2.2.3",
    "@angular/core": "^2.2.3",
    "@angular/forms": "2.2.3",
    "@angular/http": "2.2.3",
    "@angular/platform-browser": "2.2.3",
    "@angular/platform-browser-dynamic": "2.2.3",
    "@angular/router": "3.2.3",
    "@types/node": "^6.0.58",
    "angular-cli": "^1.0.0-beta.22-1",
    "core-js": "^2.4.1",
    "d3": "^4.4.1",
    "rxjs": "5.0.0-beta.12",
    "ts-helpers": "^1.1.1",
    "tslint": "^4.3.1",
    "zone.js": "^0.6.23"
  },
  "devDependencies": {
    "@angular/compiler-cli": "2.2.3",
    "@types/jasmine": "2.5.38",
    "@types/node": "^6.0.42",
    "angular-cli": "^1.0.0-beta.24",
    "codelyzer": "~2.0.0-beta.1",
    "jasmine-core": "2.5.2",
    "jasmine-spec-reporter": "2.5.0",
    "karma": "1.2.0",
    "karma-chrome-launcher": "^2.0.0",
    "karma-cli": "^1.0.1",
    "karma-jasmine": "^1.0.2",
    "karma-remap-istanbul": "^0.2.1",
    "protractor": "4.0.9",
    "ts-node": "1.2.1",
    "tslint": "^4.0.2",
    "typescript": "~2.0.3",
    "webdriver-manager": "10.2.5"
  }
}

Answer 1

UNMET PEER DEPENDENCY 日志只是警告而非错误。

他们警告您，您正在使用的库 @ngtools/webpack@1.2.1 应该使用 @angular/compiler@^2.3.1(有关 ^ https://stackoverflow.com/a/22345808/5706293 的更多信息)，我相信您自己已经明白了。

这些库的作者可能有一些已弃用的 API，并且可能不支持更高版本中的当前代码，这是您应该升级依赖项的原因之一。