From d8af84e755a183c089a318826a6f6cba66e6c939 Mon Sep 17 00:00:00 2001
From: aveline <aveline@users.noreply.github.com>
Date: Wed, 26 Jan 2022 14:01:49 -0800
Subject: [PATCH 1/2] Remove `map-extend` scss function and `_utilities.scss`

---
 src/styles/_common.scss               |  1 -
 src/styles/_public-api.scss           |  1 -
 src/styles/foundation/_utilities.scss | 56 ---------------------------
 3 files changed, 58 deletions(-)
 delete mode 100644 src/styles/foundation/_utilities.scss

diff --git a/src/styles/_common.scss b/src/styles/_common.scss
index 466bf516a01..8bfd760bbdb 100644
--- a/src/styles/_common.scss
+++ b/src/styles/_common.scss
@@ -4,7 +4,6 @@
 
 // stylelint-disable scss/partial-no-import
 
-@import './foundation/utilities';
 @import './foundation/layout';
 @import './foundation/focus-ring';
 @import './foundation/accessibility';
diff --git a/src/styles/_public-api.scss b/src/styles/_public-api.scss
index 0b9e9fe93dd..9b2189cbf08 100644
--- a/src/styles/_public-api.scss
+++ b/src/styles/_public-api.scss
@@ -16,7 +16,6 @@
 
 // stylelint-disable scss/partial-no-import
 
-@import './foundation/utilities';
 @import './foundation/layout';
 @import './foundation/focus-ring';
 
diff --git a/src/styles/foundation/_utilities.scss b/src/styles/foundation/_utilities.scss
deleted file mode 100644
index 353c0592da1..00000000000
--- a/src/styles/foundation/_utilities.scss
+++ /dev/null
@@ -1,56 +0,0 @@
-/// Returns the list of available names in a given map.
-/// @param {Map} $map - The map of data to list the names from.
-/// @param {Number} $map - The level of depth to get names from.
-/// @return {String} The list of names in the map.
-
-@function available-names($map, $level: 1) {
-  @if type-of($map) != 'map' {
-    @return null;
-  }
-
-  $output: '';
-  $newline: '\A ';
-
-  @if $level == 1 {
-    @each $key, $value in $map {
-      $output: $output +
-        '#{$newline}- #{$key} #{available-names($value, $level + 1)}';
-    }
-  } @else {
-    $output: '(';
-    $i: 1;
-
-    @each $key, $value in $map {
-      $sep: if($i < length($map), ', ', '');
-      $output: $output + '#{$key}#{$sep}#{available-names($value, $level + 1)}';
-      $i: $i + 1;
-    }
-
-    $output: $output + ')';
-  }
-
-  @return $output;
-}
-
-// Merge multiple maps into one.
-// @param {Map} $map - Initial default map.
-// @param {ArgList} $maps - Other maps to merge.
-// @return {Map} The final merged map.
-@function map-extend($map, $maps...) {
-  @for $i from 1 through length($maps) {
-    @each $key, $value in nth($maps, $i) {
-      $map: map-merge(
-        $map,
-        (
-          $key: $value,
-        )
-      );
-
-      @if type-of($value) == map and type-of(map-get($map, $key)) == map {
-        $value: map-extend(map-get($map, $key), $value);
-      }
-    }
-  }
-
-  @return $map;
-}

From 3db1d412de88b11b7bccb594c92a7d4f82af314c Mon Sep 17 00:00:00 2001
From: aveline <aveline@users.noreply.github.com>
Date: Wed, 26 Jan 2022 14:19:15 -0800
Subject: [PATCH 2/2] Update UNRELEASED-v9.md

---
 UNRELEASED-v9.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/UNRELEASED-v9.md b/UNRELEASED-v9.md
index f320f469294..458476d5ae9 100644
--- a/UNRELEASED-v9.md
+++ b/UNRELEASED-v9.md
@@ -37,6 +37,7 @@ Use [the changelog guidelines](/documentation/Versioning%20and%20changelog.md) t
 - Removed the ms-high-contrast-color() function and replaced any instances with values ([#4938](https://github.com/Shopify/polaris-react/pull/4938))
 - Removed the `border()` scss function ([#4934](https://github.com/Shopify/polaris-react/pull/4934))
 - Removed the font-family() function and replaced any instances with tokens ([#4940](https://github.com/Shopify/polaris-react/pull/4940))
+- Removed the `map-extend` scss function ([#4970](https://github.com/Shopify/polaris-react/pull/4970))
 
 ### New components