scss compilation issue in angular lib created using angular-cli

Question

Created(ng build my-lib) an angular lib with global scss then bundled into one file and copied to lib's folder.

dist-lib/my-lib/lib/sass/my-lib.scss

Now my-lib.scss imports some resources like

@font-face {
    font-family:"Roboto Regular";
    font-weight:normal;
    font-style:normal;
    src: url("../resources/fonts/roboto-regular/Roboto-Regular.eot?") format("eot"),  /* IE9 Compat Modes */
         url("../resources/fonts/roboto-regular/Roboto-Regular.woff") format("woff"), /* Pretty Modern Browsers */
         url("../resources/fonts/roboto-regular/Roboto-Regular.ttf") format("truetype");  /* Safari, Android, iOS */
}

I copied the resources folder to my lib at location

dist-lib/my-lib/lib/resources
                             /fonts
                                   / roboto-regular/Roboto-Regular.eot

Now in my Application's styles.scss file I am importing my-lib.scss file like this

@import "../dist-lib/my-lib/lib/sass/my-lib";

But this is showing error

ERROR in ./src/styles.scss (./node_modules/@angular-devkit/build-angular/src/angular-cli-files/plugins/raw-css-loader.js!./node_modules/postcss-loader/src??embedded!./node_modules/sass-loader/lib/loader.js??ref--14-3!./src/styles.scss)
Module Error (from ./node_modules/postcss-loader/src/index.js):
(Emitted value instead of an instance of Error) CssSyntaxError: D:\SK\Study\Angular\AngularLib\MyLib\dist-lib\my-lib\lib\sass\my-lib.scss:10:9: 
Can't resolve '../resources/fonts/roboto-regular/Roboto-Regular.woff' in 'D:\SK\Study\Angular\AngularLib\MyLib\src'

   8 |     font-style:normal;
   9 |     src: url("../resources/fonts/roboto-regular/Roboto-Regular.eot?") format("eot"),  /* IE9 Compat Modes */
> 10 |          url("../resources/fonts/roboto-regular/Roboto-Regular.woff") format("woff"), /* Pretty Modern Browsers */
     |         ^
  11 |          url("../resources/fonts/roboto-regular/Roboto-Regular.ttf") format("truetype");

I guess the resources are getting resolved relative to file src/styles.scss instead of relative to dist-lib/my-lib/lib/sass/my-lib.scss

What is the solution for this?

Code Guru · Accepted Answer · 2019-04-24 05:45:06Z

As I am building/serving my project through Angular-Cli, so the plugins/loaders that it uses to deal scss was not resolving the issues of relative (to the library itself) URLs (url(../)).

To solve this I created fonts.css not fonts.scss that I ship with the library. And end user has to import this fonts.css as well.

And this is working now, though this does not sound a good solution, I got this workaround till the time.

Update : Providing font.scss

@font-face {
    font-family: 'Proxima Nova';
    src: url('../assets/fonts/proxima-nova-light/ProximaNova-Light.eot');
    src: url('../assets/fonts/proxima-nova-light/ProximaNova-Light.eot?#iefix') format('embedded-opentype'),
        url('../assets/fonts/proxima-nova-light/ProximaNova-Light.woff2') format('woff2'),
        url('../assets/fonts/proxima-nova-light/ProximaNova-Light.woff') format('woff'),
        url('../assets/fonts/proxima-nova-light/ProximaNova-Light.ttf') format('truetype'),
        url('../assets/fonts/proxima-nova-light/ProximaNova-Light.svg#ProximaNova-Light') format('svg');
    font-weight: 300;
  }

  @font-face {
    font-family: 'Proxima Nova';
    src: url('../assets/fonts/proxima-nova-regular/ProximaNova-Regular.eot');
    src: url('../assets/fonts/proxima-nova-regular/ProximaNova-Regular.eot?#iefix') format('embedded-opentype'),
        url('../assets/fonts/proxima-nova-regular/ProximaNova-Regular.woff2') format('woff2'),
        url('../assets/fonts/proxima-nova-regular/ProximaNova-Regular.woff') format('woff'),
        url('../assets/fonts/proxima-nova-regular/ProximaNova-Regular.ttf') format('truetype'),
        url('../assets/fonts/proxima-nova-regular/ProximaNova-Regular.svg#ProximaNova-Regular') format('svg');
    font-weight: 400;
  }

  @font-face {
    font-family: 'Proxima Nova';
    src: url('../assets/fonts/proxima-nova-medium/ProximaNova-Medium.eot');
    src: url('../assets/fonts/proxima-nova-medium/ProximaNova-Medium.eot?#iefix') format('embedded-opentype'),
    url('../assets/fonts/proxima-nova-medium/ProximaNova-Medium.woff2') format('woff2'),
    url('../assets/fonts/proxima-nova-medium/ProximaNova-Medium.woff') format('woff'),
    url('../assets/fonts/proxima-nova-medium/ProximaNova-Medium.ttf') format('truetype'),
        url('../assets/fonts/proxima-nova-medium/ProximaNova-Medium.svg#ProximaNova-Medium') format('svg');
        font-weight: 500;
  }

  @font-face {
    font-family: 'Proxima Nova';
    src: url('../assets/fonts/proxima-nova-bold/ProximaNova-Bold.eot');
    src: url('../assets/fonts/proxima-nova-bold/ProximaNova-Bold.eot?#iefix') format('embedded-opentype'),
        url('../assets/fonts/proxima-nova-bold/ProximaNova-Bold.woff2') format('woff2'),
        url('../assets/fonts/proxima-nova-bold/ProximaNova-Bold.woff') format('woff'),
        url('../assets/fonts/proxima-nova-bold/ProximaNova-Bold.ttf') format('truetype'),
        url('../assets/fonts/proxima-nova-bold/ProximaNova-Bold.svg#ProximaNova-Bold') format('svg');
    font-weight: 700;
  }

As I have used font.scss that will be compiled to font.css file as the lib build process using this script

"build-lib-fonts": "node-sass --include-path scss ./projects/project/src/lib/styles/_fonts.scss ./dist-lib/project/styles/fonts.css",

Can you please share the content of your font.css file? I am hitting the same problem, but I don't understand how to fix. Thanks

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