我买了一个管理模板(来自wrappixel)，它是Angular 6应用程序。我需要将其升级到Angular版本7。我使用
ng更新--强制--所有
注意，我必须使用--force选项来确保更新通过，目的是在更新后修复对等依赖关系
以下对等依赖关系现在需要修复，因为现在构建已损坏：
npm WARN ng2-smart-table@1.3.5 requires a peer of ng2-completer@^2.0.8 but none is installed. You must install peer dependencies yourself.
npm WARN ng2-smart-table@1.3.5 requires a peer of @angular/common@^6.0.1 but none is installed. You must install peer dependencies yourself.
npm WARN ng2-smart-table@1.3.5 requires a peer of @angular/core@^6.0.1 but none is installed. You must install peer dependencies yourself.
npm WARN ng2-smart-table@1.3.5 requires a peer of @angular/forms@^6.0.1 but none is installed. You must install peer dependencies yourself.
npm WARN ngx-quill@4.5.0 requires a peer of quill@^1.3.6 but none is installed. You must install peer dependencies yourself.
在阅读了各种关于对等依赖关系的文章(包括peer dependencies，其中谈到了很多插件)后，我仍然不知道如何解释这些警告背后的含义，也不知道该如何修复它们。
让我们来看看第一个：
ng2-smart-table@1.3.5需要一个ng2完成器的对等体@^2.0.8
这意味着什么？
我的package.json包含(在依赖项部分)：
"ng2-smart-table": "^1.3.5",
ng2完成符不在我的package.json中，因为它不是直接依赖项。
那么，这个错误是否来自于它目前没有被指定为直接依赖项的事实，它应该是；即我是否应该只安装所需的版本，使其成为直接依赖项？(npm安装ng2完成器@^2.0.8？？)
我在其他文章中看到，有一个"peerDependencies"可以进入package.json，这是我自己从未见过的。那么，我应该创建这个部分并在其中添加"ng2 completer@^2.0.8"吗？。
在没有修复这些对等依赖关系的情况下，当我构建应用程序时，我会出现以下错误：
λ ~/dev/github/js/wrappixel/admin-pro-angular-ng6-v2/admin-angular/ upgrade-framework* npm run start
> admin-angular@0.0.0 start /Users/Plastikfan/dev/github/js/wrappixel/admin-pro-angular-ng6-v2/admin-angular
> ng serve
** Angular Live Development Server is listening on localhost:4200, open your browser on http://localhost:4200/ **
Date: 2019-01-22T13:20:28.970Z
Hash: c0785093f684bce10104
Time: 8859ms
chunk {main} main.js, main.js.map (main) 1.95 kB [initial] [rendered]
chunk {polyfills} polyfills.js, polyfills.js.map (polyfills) 92.4 kB [initial] [rendered]
chunk {runtime} runtime.js, runtime.js.map (runtime) 6.08 kB [entry] [rendered]
chunk {scripts} scripts.js, scripts.js.map (scripts) 97.2 kB [entry] [rendered]
chunk {styles} styles.js, styles.js.map (styles) 2.09 MB [initial] [rendered]
chunk {vendor} vendor.js, vendor.js.map (vendor) 327 kB [initial] [rendered]
ERROR in multi ./src/styles.css ./node_modules/ngx-toastr/toastr.css ./node_modules/angular-calendar/css/angular-calendar.css ./node_modules/chartist/dist/chartist.css ./node_modules/quill/dist/quill.snow.css ./node_modules/dragula/dist/dragula.css ./src/assets/scss/style.scss
Module not found: Error: Can't resolve '/Users/Plastikfan/dev/github/js/wrappixel/admin-pro-angular-ng6-v2/admin-angular/node_modules/quill/dist/quill.snow.css' in '/Users/Plastikfan/dev/github/js/wrappixel/admin-pro-angular-ng6-v2/admin-angular'
ERROR in src/app/apps/apps.module.ts(7,31): error TS2307: Cannot find module 'ng2-dragula/ng2-dragula'.
src/app/apps/apps.module.ts(17,66): error TS2554: Expected 1-2 arguments, but got 0.
src/app/apps/fullcalendar/fullcalendar.component.ts(5,102): error TS2307: Cannot find module 'date-fns'.
src/app/charts/chartist-js/chartistjs.component.ts(3,39): error TS2307: Cannot find module 'ng-chartist/dist/chartist.component'.
src/app/charts/chartist-js/dynamic.component.ts(2,27): error TS2307: Cannot find module 'ng-chartist/dist/chartist.component'.
src/app/extra-component/drag-n-drop/drag.component.ts(11,25): error TS2339: Property 'subscribe' does not exist on type '(groupName?: string) => Observable<{ name: string; el: Element; source: Element; }>'.
src/app/extra-component/drag-n-drop/drag.component.ts(15,25): error TS2339: Property 'subscribe' does not exist on type '(groupName?: string) => Observable<{ name: string; el: Element; target: Element; source: Element; sibling: Element; }>'.
src/app/extra-component/drag-n-drop/drag.component.ts(19,25): error TS2339: Property 'subscribe' does not exist on type '(groupName?: string) => Observable<{ name: string; el: Element; container: Element; source: Element; }>'.
src/app/extra-component/drag-n-drop/drag.component.ts(23,24): error TS2339: Property 'subscribe' does not exist on type '(groupName?: string) => Observable<{ name: string; el: Element; container: Element; source: Element; }>'.
src/app/extra-component/drag-n-drop/drag.component.ts(27,30): error TS2339: Property 'subscribe' does not exist on type '<T = any>(groupName?: string) => Observable<{ name: string; el: Element; target: Element; source: Element; sibling: Element; item: T; sourceModel: T[]; targetModel: T[]; sourceIndex: number; targetIndex: number; }>'.
src/app/extra-component/drag-n-drop/drag.component.ts(30,32): error TS2339: Property 'subscribe' does not exist on type '<T = any>(groupName?: string) => Observable<{ name: string; el: Element; container: Element; source: Element; item: T; sourceModel: T[]; sourceIndex: number; }>'.
ℹ ｢wdm｣: Failed to compile.
在多个css文件中存在multi错误，找不到模块错误和"类型上不存在属性‘subscribe’"错误。我不知道它们是否与对等依赖关系警告有关，但我猜它们是。
在我的angular.json中，我的"样式"部分包括：
"styles": [
"src/styles.css",
"node_modules/ngx-toastr/toastr.css",
"node_modules/angular-calendar/css/angular-calendar.css",
"node_modules/chartist/dist/chartist.css",
"node_modules/quill/dist/quill.snow.css",
"node_modules/dragula/dist/dragula.css",
"src/assets/scss/style.scss"
],
并且这些css文件与所看到的"ERROR in multi"错误消息相匹配。我发现另一篇文章提到"src/styles.css"应该改为"styles.css"，我试过了，但这没有什么区别。
还有：
ng2-smart-table@1.3.5 requires a peer of @angular/common@^6.0.1
ng2-smart-table@1.3.5 requires a peer of @angular/core@^6.0.1
ng2-smart-table@1.3.5 requires a peer of @angular/forms@^6.0.1
看起来像ng2-smart-table@1.3.5依赖于Angular 6，但我刚刚将该项目升级到Angular 7。"ng2-smart-table@1.3.5"问题和依赖性需要更改为适用于Angular 7？的更高版本
我希望有人能帮助我修复对等依赖警告，最终目的是修复所有这些构建错误。
谢谢。
如果您还没有安装此模块，请安装此模块。
npm i ng2-completer --save
这种依赖性并不是一直都需要的。我最近遇到了这个问题。在我的一个项目中，它可以很好地使用这个模块，但在第二个项目中我安装了它。然后它就很好地工作了。
对于其他css错误，它看起来像css问题。确保你以正确的方式获得css。其他明智的做法是在样式数组中使用./node-modules...。
最后一期。确保您在package.josn中具有此依赖关系。
"dependencies": {
"@agm/core": "^1.0.0-beta.3",
"@angular/animations": "^6.0.2",
"@angular/common": "^6.0.2",
"@angular/compiler": "^6.0.2",
"@angular/core": "^6.0.2",
"@angular/forms": "^6.0.2"
....
}