Generated by SassMeister.com.

input.scss

@use 'sass:map';

$tokens: (
    'red': #ff0000,
    'blue': #00ff00,
    'green': #0000ff
);

$mixins: ();

@mixin define-mixin($name) {
    $internal-name: inline-#{unique-id()};
    $mixins: map.set($mixins, $name, $internal-name) !global;
    
    @at-root {
        %#{$internal-name} {
            @content;
        }
    }
}

@mixin apply-mixin($name) {
    $internal-name: map.get($mixins, $name);
    @extend %#{$internal-name};
}

@include define-mixin('test1') {
    color: map.get($tokens, 'red');
    background-color: map.get($tokens, 'green');
}

.element {
    @include apply-mixin('test1');
}

output.css

.element {
  color: #ff0000;
  background-color: #0000ff;
}

settings.json

{
  "sass": {
    "compiler": "dart-sass/1.32.12",
    "extensions": {},
    "syntax": "SCSS",
    "outputStyle": "expanded"
  },
  "autoprefixer": false
}