Angular-cli from css to scss

Question

I've read the documentation, which says that if I want to use scss I have to run the following command:

ng set defaults.styleExt scss

But when I do that and make that file, I still receive this error in my console:

styles.bundle.js:33Uncaught Error: Module build failed: Error: ENOENT:
no such file or directory, open
'/Users/Egen/Code/angular/src/styles.css'(…)

Answer 1

For Angular 6 check the Official documentation

Note: For @angular/cli versions older than 6.0.0-beta.6 use ng set in place of ng config.

For existing projects

In an existing angular-cli project that was set up with the default css styles you will need to do a few things:

1. Change the default style extension to scss

Manually change in .angular-cli.json (Angular 5.x and older) or angular.json (Angular 6+) or run:

ng config defaults.styleExt=scss

if you get an error: Value cannot be found. use the command:

ng config schematics.@schematics/angular:component.styleext scss

(*source: Angular CLI SASS options)

2. Rename your existing .css files to .scss (i.e. styles.css and app/app.component.css)

3. Point the CLI to find styles.scss

Manually change the file extensions in apps[0].styles in angular.json

4. Point the components to find your new style files

Change the styleUrls in your components to match your new file names

For future projects

As @Serginho mentioned you can set the style extension when running the ng new command

ng new your-project-name --style=scss

If you want to set the default for all projects you create in the future run the following command:

ng config --global defaults.styleExt=scss

Answer 2

As of ng6 this can be accomplished with the following code added to angular.json at the root level:

Manually change in .angular.json:

"schematics": {
  "@schematics/angular:component": {
    "styleext": "scss"
  }
}

Answer 3

Open angular.json file

1.change from

"schematics": {}

to

"schematics": {
           "@schematics/angular:component": {
                   "styleext": "scss"       
             }  
  }

2. change from (at two places)

"src/styles.css"

to

"src/styles.scss"

then check and rename all .css files and update component.ts files styleUrls from .css to .scss

Answer 4

For Angular 6,

ng config schematics.@schematics/angular:component.styleext scss

note: @schematics/angular is the default schematic for the Angular CLI

Answer 5

CSS Preprocessor integration for Angular CLI: 6.0.3

When generating a new project you can also define which extension you want for style files:

ng new sassy-project --style=sass

Or set the default style on an existing project:

ng config schematics.@schematics/angular:component.styleext scss

Angular CLI Documentation for all major CSS preprocessors

Answer 6

In latest version of Angular (v9), below code needs to add in angular.json

  "schematics": {
    "@schematics/angular:component": {
      "style": "scss"
    }
  }

Could be added using the following command:

ng config schematics.@schematics/angular:component.style scss

Answer 7

For existing projects:

In angular.json file

1. In build part and in test part, replace:

   "styles": ["src/styles.css"], by "styles": ["src/styles.scss"],

2. Replace:

   "schematics": {}, by "schematics": { "@schematics/angular:component": { "style": "scss" } },

Using ng config schematics.@schematics/angular:component.styleext scss command works but it does not place the configuration in the same place.

In your project rename your .css files to .scss

For a new project, this command do all the work:

ng n project-name --style=scss

For global configuration

New versions seems to not have a global command

Answer 8

Use command:

ng config schematics.@schematics/angular:component.styleext scss

Answer 9

In ng6 you need to use this command, according to a similar post:

ng config schematics.@schematics/angular:component '{ styleext: "scss"}'

Answer 10

For users of the Nrwl extensions who come across this thread: all commands are intercepted by Nx (e.g., ng generate component myCompent) and then passed down to the AngularCLI.

The command to get SCSS working in an Nx workspace:

ng config schematics.@nrwl/schematics:component.styleext scss

Answer 11

A brute force change can be applied. This will work to change, but it's a longer process.

Go to the app folder src/app

1. Open this file: app.component.ts

2. Change this code styleUrls: ['./app.component.css'] to styleUrls: ['./app.component.scss']

3. Save and close.

In the same folder src/app

1. Rename the extension for the app.component.css file to (app.component.scss)

2. Follow this change for all the other components. (ex. home, about, contact, etc...)

The angular.json configuration file is next. It's located at the project root.

1. Search and Replace the css change it to (scss).

2. Save and close.

Lastly, Restart your ng serve -o.

If the compiler complains at you, go over the steps again.

Make sure to follow the steps in app/src closely.

Answer 12

A quick and easy way to perform the migration is to use the schematic NPM package schematics-scss-migrate. this package rename all css to scss file :

ng add schematics-scss-migrate

https://github.com/Teebo/scss-migrate#readme

Answer 13

First install in your project:

npm i --save-dev schematics-scss-migrate

In your Angular CLI project:

run below command:

ng g schematics-scss-migrate:scss-migrate

Above command will do the following in the consuming project:

1. Rename all the stylesheets in the src folder recursively.
2. Alter the styleUrls in respective component classes to point to the new file names for stylesheets.
3. Updates the component styles schematics value in the angular.json file or creates one if the schematic does not exist, and
4. Renames all styles.css references to styles.scss in the angular.json file.

I have tried this on my angular 9 project and it worked...no need for extra efforts for renaming files...😎 just enter the command and BOOM!!! now your project is migrated to scss project.

refer: https://www.npmjs.com/package/schematics-scss-migrate

Answer 14

For Angular 11+

Manually change in angular.json.

Replace the "schematics": {},

with

  "schematics": {
        "@schematics/angular:component": {
          "style": "scss"
        }
      },