$icons-defaults: (

  // Space around sprites in generated spritemap.
  // Useful with `$offset` parameter.
  // This setting is global for all spritemaps.
  // Can be set per spritemap with the `$spacing` parameter.
  spacing: 0,

  // Main icons directory. `sprite-map-create()`, base for sub dirs.
  dir: "icons",

  // Name of the png sub-folders.
  dir-png: "png",

  // Name of the hidpi png sub-folders.
  dir-hidpi: "png_2x",

  // Scale of the hidpi pngs.
  hidpi-scale: 2,

  // Minimum resolution ratio used in the hidpi media query.
  hidpi-ratio: 1.3,

  // Whether to embed icons as data URI in the `icon-single()` mixin.
  single-embed: true,

  // Default file format unless overridden by parameter, svg | png.
  format: "svg",

  // Whether to support legacy browsers, svg fallback.
  legacy: true

);

$icons-settings: () !default;

@function conf($key) { ... }

@function _join($list, $glue: '') { ... }

@function _sprite-map-get($name, $factor: 1x) { ... }

@function _sprite-position($map, $sprite, $offset-x: 0, $offset-y: 0, $scale: 1) { ... }

@mixin hidpi-mq() { ... }

@mixin generated($width, $height, $top, $right, $bottom, $left) { ... }

@mixin icon-generated($map, $sprite, $pos: 'before', $centered: false, $format: conf(format)) { ... }

@mixin icon-single($map, $sprite, $format: conf(format)) { ... }

@mixin icon($map, $sprite, $offset: (0 0), $format: conf(format)) { ... }

@mixin sprite-map-create($name, $spacing: conf(spacing)) { ... }

$icons-spritemaps: ();