Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.3.8)
// Compass (v1.0.0.alpha.19)
// ----

// Test if map got all `$keys` at root level
// ---
// @param [map] $map: map
// @param [argList] $keys: keys to test
// ---
// @return [bool]
// ---
@function map-has-keys($map, $keys...) {
  @each $key in $keys {
    @if not map-has-key($map, $key) {
      @return false;
    }
  }
  
  @return true;
}

// Test if map got all `$keys` nested with each others
// ---
// @param [map] $map: map
// @param [argList] $keys: keys to test
// ---
// @return [bool]
// ---
@function map-has-nested-keys($map, $keys...) {
  @each $key in $keys {
    @if not map-has-key($map, $key) {
      @return false;
    }
    $map: map-get($map, $key);
  }
  
  @return true;
}

// Fetch nested keys
// ---
// @param [map] $map: map
// @param [argList] $keys: keys to fetch
// ---
// @return [literal]
// ---
@function map-deep-get($map, $keys...) {
  @each $key in $keys {
    $map: map-get($map, $key);
  }

  @return $map;
}

// Test sample
// ---
$themes: (
  'warm': (
    'primary': red,
    'secondary': orangered
  ),
  'cold': (
    'primary': blue,
    'secondary': deepskyblue
  )
);

#{"Default map-has-key"} {
  warm: map-has-key($themes, "warm");
  cold: map-has-key($themes, "cold");
  primary: map-has-key($themes, "primary");
}

#{"Custom map-has-keys"} {
  warm: map-has-keys($themes, "warm");
  #{"warm, cold"}: map-has-keys($themes, "warm", "cold");
  #{"warm, cold, other-key"}: map-has-keys($themes, "warm", "cold", "other-key");
  #{"warm, primary"}: map-has-keys($themes, "warm", "primary");
}

#{"Custom map-has-nested-keys"} {
  #{"warm"}: map-has-nested-keys($themes, "warm");
  #{"warm.primary"}: map-has-nested-keys($themes, "warm", "primary");
  #{"warm.secondary"}: map-has-nested-keys($themes, "cold", "secondary");
  #{"warm.cold"}: map-has-nested-keys($themes, "warm", "cold");
  #{"warm.cold.primary"}: map-has-nested-keys($themes, "warm", "cold", "primary");
}

#{"Default map-get"} {
  warm: inspect(map-get($themes, "warm"));
  cold: inspect(map-get($themes, "cold"));
  primary: inspect(map-get($themes, "primary"));
}

#{"Custom map-deep-get"} {
  warm: inspect(map-deep-get($themes, "warm"));
  #{"warm.primary"}: map-deep-get($themes, "warm", "primary");
  #{"warm.cold"}: inspect(map-deep-get($themes, "warm", "cold"));
}

SassMeister-output.css

Default map-has-key {
  warm: true;
  cold: true;
  primary: false;
}

Custom map-has-keys {
  warm: true;
  warm, cold: true;
  warm, cold, other-key: false;
  warm, primary: false;
}

Custom map-has-nested-keys {
  warm: true;
  warm.primary: true;
  warm.secondary: true;
  warm.cold: false;
  warm.cold.primary: false;
}

Default map-get {
  warm: ("primary": red, "secondary": orangered);
  cold: ("primary": blue, "secondary": deepskyblue);
  primary: null;
}

Custom map-deep-get {
  warm: ("primary": red, "secondary": orangered);
  warm.primary: red;
  warm.cold: null;
}