components: Not able to compile custom theme

I’m not able to set the custom material theme like in Theming your Angular Material app guide.

When I add the scss code like in the sample:

@import '~@angular/material/core/theming/all-theme';
// Plus imports for other components in your app.

// Include the base styles for Angular Material core. We include this here so that you only
// have to load a single css file for Angular Material in your app.
@include md-core();

// Define the palettes for your theme using the Material Design palettes available in palette.scss
// (imported above). For each palette, you can optionally specify a default, lighter, and darker
// hue.
$candy-app-primary: md-palette($md-indigo);
$candy-app-accent:  md-palette($md-pink, A200, A100, A400);

// The warn palette is optional (defaults to red).
$candy-app-warn:    md-palette($md-red);

// Create the theme object (a Sass map containing all of the palettes).
$candy-app-theme: md-light-theme($candy-app-primary, $candy-app-accent, $candy-app-warn);

// Include theme styles for core and each component used in your app.
// Alternatively, you can import and @include the theme mixins for each component
// that you are using.
@include angular-material-theme($candy-app-theme);

When I run node-sass, I’m getting the error:

{ “status”: 1, “file”: “/home/skined/workspace/project/src/scss/style.scss”, “line”: 5, “column”: 1, “message”: “File to import not found or unreadable: ~@angular/material/core/theming/all-theme\nParent style sheet: /home/skined/workspace/project/src/scss/style.scss”, “formatted”: “Error: File to import not found or unreadable: ~@angular/material/core/theming/all-theme\n Parent style sheet: /home/skined/workspace/project/src/scss/style.scss\n on line 5 of src/scss/style.scss\n>> @import ‘~@angular/material/core/theming/all-theme’;\n ^\n” }

Am I doing something wrong?