$data-uris: () !default;

/// Mixin register-data-uri
/// This mixin registers a data URI that can be used instead of a file reference
/// @access public
/// @param {String} $name - The name of the resource
/// @param {String} $content - The data URI of the resource
/// @require $data-uris
@mixin register-data-uri($name, $content) {
    @if (map-has-key($data-uris, $name)) {
        @warn "Attempt to redefine data URI of file `#{$name}`.";
    }

    $data-uris: map-merge($data-uris, ($name: $content)) !global;
}

/// Function embed-url
/// This function outputs the url() to a data URI for a file registered via the `register-data-uri` mixin
/// @access public
/// @param {String} $name - The name of the resource
/// @require $data-uris
@function embed-url($name) {
    @if (map-has-key($data-uris, $name)) {

      @return url(map-get($data-uris, $name));
    } @else {
      @error "Data URI for file `#{$name}` does not exist. Perhaps you need to run `npm run embed-assets`?";
    }
}