angular2-cli gives @multi styles error

I am using Angular 6 so my filename is angular.json, but I was able to resolve the similar issue by removing the "../" path that it was asking for. Below is my setup for adding bootstrap and jquery to my angular app.

   "styles": [
          "src/styles.css",
          "node_modules/bootstrap/dist/css/bootstrap.css"
        ],
        "scripts": ["../node_modules/jquery/dist/jquery.js",
          "node_modules/bootstrap/dist/js/bootstrap.bundle.js"
      ]

Note: for jquery i needed the "../" while bootstap did not require it.

Alternate based on issues I had:

    "styles": [
          "src/styles.css", 
          "../node_modules/bootstrap/dist/css/bootstrap.css"
       ],
    "scripts": [
          "../node_modules/jquery/dist/jquery.js", 
          "../node_modules/bootstrap/dist/js/bootstrap.bundle.js"
      ]

Also, this article holds multiple alternate options on setting it .

https://medium.com/@rogercodes1/intro-to-angular-and-how-to-setup-your-first-angular-app-b36c9c3ab6ca

In Angular 7 the file is called 'angular.json'.

Make sure you got the right extension set for the "styles" option. In my case I installed the Angular CLI with the SCSS option but the extension was set as SASS by default.

       "styles": [
          "src/styles.scss" // default was: src/styles.sass
        ],

Add ../ before path.

In angular-cli.json,

"styles": [
  "../node_modules/bootstrap/dist/css/bootstrap.min.css",
  "styles.scss"
]

Update

In angular7, there is angular.json file and you do not need to add ../ before path