例如,当我安装Angular2时:
npm install --save angular2
temp@1.0.0 /Users/doug/Projects/dougludlow/temp
??? angular2@2.0.0-beta.3
??? UNMET PEER DEPENDENCY es6-promise@^3.0.2
??? UNMET PEER DEPENDENCY es6-shim@^0.33.3
??? UNMET PEER DEPENDENCY reflect-metadata@0.1.2
??? UNMET PEER DEPENDENCY rxjs@5.0.0-beta.0
??? UNMET PEER DEPENDENCY zone.js@0.5.11
npm WARN angular2@2.0.0-beta.3 requires a peer of es6-promise@^3.0.2 but none was installed.
npm WARN angular2@2.0.0-beta.3 requires a peer of es6-shim@^0.33.3 but none was installed.
npm WARN angular2@2.0.0-beta.3 requires a peer of reflect-metadata@0.1.2 but none was installed.
npm WARN angular2@2.0.0-beta.3 requires a peer of rxjs@5.0.0-beta.0 but none …npm 是否可以选择将依赖项安装为对等依赖项--yarn，例如 yarn option ，而不是手动添加它，例如：
"peerDependencies": {
"@angular/core": "^7.0.0"
}
感谢@Broncha，更新问题的更多说明
问题是如何向项目添加对等依赖项。那是
npm i dep 将依赖添加到 package.json 中的“dependencies”，npm i -D dep 将依赖项添加到 package.json 中的“devDependencies”。如何安装将其添加到 package.json 中的“peerDependencies”的依赖项？