From 9c656d417edb40a29a422711861544796c176838 Mon Sep 17 00:00:00 2001
From: Henrik Skupin <mail@hskupin.info>
Date: Tue, 9 Jun 2020 23:17:07 +0200
Subject: [PATCH] chore: remove `prefers-color-scheme: no-preference` (#5990)

The 'no-preference' value has been removed from the spec per resolution in [1]. The appropriate web-platform-tests [2] have already been updated.

[1] https://github.com/w3c/csswg-drafts/issues/3857#issuecomment-634779976
[2] https://github.com/web-platform-tests/wpt/pull/24024
---
 docs/api.md            |  4 ----
 test/emulation.spec.js | 15 ---------------
 2 files changed, 19 deletions(-)

diff --git a/docs/api.md b/docs/api.md
index 76c20364..a4992686 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -1342,8 +1342,6 @@ await page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches);
 // → true
 await page.evaluate(() => matchMedia('(prefers-color-scheme: light)').matches);
 // → false
-await page.evaluate(() => matchMedia('(prefers-color-scheme: no-preference)').matches);
-// → false
 
 await page.emulateMediaFeatures([{ name: 'prefers-reduced-motion', value: 'reduce' }]);
 await page.evaluate(() => matchMedia('(prefers-reduced-motion: reduce)').matches);
@@ -1359,8 +1357,6 @@ await page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches);
 // → true
 await page.evaluate(() => matchMedia('(prefers-color-scheme: light)').matches);
 // → false
-await page.evaluate(() => matchMedia('(prefers-color-scheme: no-preference)').matches);
-// → false
 await page.evaluate(() => matchMedia('(prefers-reduced-motion: reduce)').matches);
 // → true
 await page.evaluate(() => matchMedia('(prefers-reduced-motion: no-preference)').matches);
diff --git a/test/emulation.spec.js b/test/emulation.spec.js
index 6f8e6a50..9c5e1a44 100644
--- a/test/emulation.spec.js
+++ b/test/emulation.spec.js
@@ -249,11 +249,6 @@ describe('Emulation', () => {
           () => matchMedia('(prefers-color-scheme: dark)').matches
         )
       ).toBe(false);
-      expect(
-        await page.evaluate(
-          () => matchMedia('(prefers-color-scheme: no-preference)').matches
-        )
-      ).toBe(false);
       await page.emulateMediaFeatures([
         { name: 'prefers-color-scheme', value: 'dark' },
       ]);
@@ -267,11 +262,6 @@ describe('Emulation', () => {
           () => matchMedia('(prefers-color-scheme: light)').matches
         )
       ).toBe(false);
-      expect(
-        await page.evaluate(
-          () => matchMedia('(prefers-color-scheme: no-preference)').matches
-        )
-      ).toBe(false);
       await page.emulateMediaFeatures([
         { name: 'prefers-reduced-motion', value: 'reduce' },
         { name: 'prefers-color-scheme', value: 'light' },
@@ -296,11 +286,6 @@ describe('Emulation', () => {
           () => matchMedia('(prefers-color-scheme: dark)').matches
         )
       ).toBe(false);
-      expect(
-        await page.evaluate(
-          () => matchMedia('(prefers-color-scheme: no-preference)').matches
-        )
-      ).toBe(false);
     });
     it('should throw in case of bad argument', async () => {
       const { page } = getTestState();