Question

每次尝试使用npm安装角度库（例如，我需要此库：https://www.npmjs.com/package/ngx-pinch-zoom）时，都会收到警告，提示我应该自己安装对等依赖项。

 npm WARN @progress/kendo-theme-bootstrap@2.6.2 requires a peer of bootstrap@git://github.com/twbs/bootstrap.git#95f37e4c402df37db16781995ffa1592032df9c8 but none is installed. You must install peer dependencies yourself.
    npm WARN ngx-pinch-zoom@1.2.0 requires a peer of @angular/common@^6.0.0-rc.0 || ^6.0.0 but none is installed. You must install peer dependencies yourself.
    npm WARN ngx-pinch-zoom@1.2.0 requires a peer of @angular/core@^6.0.0-rc.0 || ^6.0.0 but none is installed. You must install peer dependencies yourself.
    npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.1.3 (node_modules\fsevents):
    npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.1.3: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

我试图将npm降级到小于3的版本，但是我得到了同样的东西： npm安装npm@2.8.4

Testing binary
Binary is fine
npm WARN @progress/kendo-theme-bootstrap@2.6.2 requires a peer of bootstrap@git://github.com/twbs/bootstrap.git#95f37e4c402df37db16781995ffa1592032df9c8 but none is installed. You must install peer dependencies yourself.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.1.3 (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.1.3: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

+ npm@2.8.4
added 469 packages from 498 contributors, removed 230 packages, updated 29 packages and audited 5980 packages in 62.539s
found 226 vulnerabilities (66 low, 106 moderate, 51 high, 3 critical)
  run `npm audit fix` to fix them, or `npm audit` for details

npm -v 6.5.0

然后，该版本仍为6.5.0。有什么解决方案？

Answer 1

npm 3明确删除了对等依赖项的自动安装，因为它引起的问题比它尝试解决的更多。例如，您可以在此处阅读有关内容：

https://blog.npmjs.org/post/110924823920/npm-weekly-5

https://github.com/npm/npm/releases/tag/v3.0.0

因此，不能，npm 3或更高版本不能自动安装对等依赖项。

您可以使用项目npm-install-peers检测并安装对等项。要使用此运行npm install -g npm-install-peers，然后在项目目录中运行npm-install-peers。这将读出您的package.json文件并安装所有peerDependencies。

从v1.0.1开始，它不支持自动写回package.json，这从本质上解决了我们的需求。

您也可以尝试npm cache clean --f，npm install来解决问题。

角度库安装对等依赖性问题

1 个答案: