Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.4.14)
// Compass (v1.0.3)
// ----

/*
type-of(100px)  => #{type-of(100px)}
type-of(asdf)   => #{type-of(asdf)}
type-of(true)   => #{type-of(true)}
type-of(#fff)   => #{type-of(#fff)}
type-of(blue)   => #{type-of(blue)}
*/

$gemini-base: (
  100px:   true,
  asdf:    true,
  true:    true,
  #fff:    true,
  blue:    true,
  layer1:  (
    layer2: true
  )
);

@function get($key, $map: $gemini-base) {
  @if type-of($key) == string and (str-index($key, ".") or 0) > 0 {
    $parent-key: str-slice($key, 1, str-index($key, ".") - 1);
    $child-key: str-slice($key, str-index($key, ".") + 1);

    @if type-of(map-get($map, $parent-key)) == map {
      @return get($child-key, map-get($map, $parent-key));
    }
  }

  @return map-get($map, $key);
}

/*
#{get(100px)}
#{get(asdf)}
#{get(true)}
#{get(#fff)}
#{get(blue)}
#{get("layer1.layer2")}
*/

SassMeister-output.css

/*
type-of(100px)  => number
type-of(asdf)   => string
type-of(true)   => bool
type-of(#fff)   => color
type-of(blue)   => color
*/
/*
true
true
true
true
true
true
*/