chore: remove legacy prefixes (#8276)

Author: mister-ben

src/css/_utilities.scss

@@ -6,18 +6,10 @@
 }
 
 @mixin transform($transform) {
-  -moz-transform: $transform;
-  -ms-transform: $transform;
-  -o-transform: $transform;
-  -webkit-transform: $transform;
   transform: $transform;
 }
 
 @mixin transition($string: $transition--default) {
-  -webkit-transition: $string;
-  -moz-transition: $string;
-  -ms-transition: $string;
-  -o-transition: $string;
   transition: $string;
 }
 
@@ -32,44 +24,26 @@
 }
 
 @mixin border-radius($radius) {
-  -webkit-border-radius: $radius;
-  -moz-border-radius: $radius;
   border-radius: $radius;
 }
 
 @mixin animation($string: spin 1s infinite linear) {
-  -webkit-animation: $string;
-  -moz-animation: $string;
-  -o-animation: $string;
   animation: $string;
 }
 
 @mixin display-flex($alignment: '', $justification: '') {
-  display: -webkit-box;
-  display: -webkit-flex;
-  display: -ms-flexbox;
   display: flex;
 
   @if $alignment != '' {
-    -webkit-box-align: $alignment;
-    -webkit-align-items: $alignment;
-    -ms-flex-align: $alignment;
     align-items: $alignment;
   }
 
   @if $justification != '' {
-    -webkit-box-pack: $justification;
-    -webkit-justify-content: $justification;
-    -ms-flex-pack: $justification;
     justify-content: $justification;
   }
 }
 
 @mixin flex($value) {
-  -webkit-box-flex: $value;
-  -moz-box-flex: $value;
-  -webkit-flex: $value;
-  -ms-flex: $value;
   flex: $value;
 }
 
@@ -78,30 +52,18 @@
 @mixin user-select($string: none) {
   /* iOS Safari */
   -webkit-touch-callout: $string;
-  /* Safari */
+  /* Safari, and Chrome 53 */
   -webkit-user-select: $string;
-  /* Konqueror HTML */
-  -khtml-user-select: $string;
-  /* Firefox */
-  -moz-user-select: $string;
-  /* Internet Explorer/Edge */
-  -ms-user-select: $string;
   /* Non-prefixed version, currently supported by Chrome and Opera */
   user-select: $string;
 }
 
 // https://developer.mozilla.org/en-US/docs/Web/CSS/box-shadow
 @mixin box-shadow ($string: 0 0 1em rgba(0, 0, 0, 0.25)) {
-  -webkit-box-shadow: $string;
-  -moz-box-shadow: $string;
   box-shadow: $string;
 }
 
 @mixin order($value) {
-  -webkit-box-ordinal-group: $value;
-  -moz-box-ordinal-group: $value;
-  -ms-flex-order: $value;
-  -webkit-order: $value;
   order: $value;
 }
 

src/css/components/_button.scss

@@ -10,8 +10,8 @@
   text-decoration: none;
   transition: none;
 
+  // Chrome < 83
   -webkit-appearance: none;
-  -moz-appearance:    none;
   appearance:         none;
 }
 

src/css/components/_loading.scss

@@ -48,7 +48,6 @@
 .vjs-seeking .vjs-loading-spinner:after,
 .vjs-waiting .vjs-loading-spinner:before,
 .vjs-waiting .vjs-loading-spinner:after {
-  -webkit-animation: vjs-spinner-spin 1.1s cubic-bezier(0.6, 0.2, 0, 0.8) infinite, vjs-spinner-fade 1.1s linear infinite;
   animation: vjs-spinner-spin 1.1s cubic-bezier(0.6, 0.2, 0, 0.8) infinite, vjs-spinner-fade 1.1s linear infinite;
 }
 
@@ -60,7 +59,6 @@
 .vjs-seeking .vjs-loading-spinner:after,
 .vjs-waiting .vjs-loading-spinner:after {
   border-top-color: rgb(255,255,255);
-  -webkit-animation-delay: 0.44s;
   animation-delay: 0.44s;
 }
 
@@ -70,24 +68,12 @@
   }
 }
 
-@-webkit-keyframes vjs-spinner-show {
-  to {
-    visibility: visible;
-  }
-}
-
 @keyframes vjs-spinner-spin {
   100% {
     transform: rotate(360deg);
   }
 }
 
-@-webkit-keyframes vjs-spinner-spin {
-  100% {
-    -webkit-transform: rotate(360deg);
-  }
-}
-
 @keyframes vjs-spinner-fade {
   0% {
     border-top-color: $secondary-background-color;
@@ -105,21 +91,3 @@
     border-top-color: $secondary-background-color;
   }
 }
-
-@-webkit-keyframes vjs-spinner-fade {
-  0% {
-    border-top-color: $secondary-background-color;
-  }
-  20% {
-    border-top-color: $secondary-background-color;
-  }
-  35% {
-    border-top-color: white;
-  }
-  60% {
-    border-top-color: $secondary-background-color;
-  }
-  100% {
-    border-top-color: $secondary-background-color;
-  }
-}

src/css/utilities/_linear-gradient.scss

@@ -79,7 +79,6 @@
 
 /// Mixin printing a linear-gradient
 /// as well as a plain color fallback
-/// and the `-webkit-` prefixed declaration
 /// @access public
 /// @param {String | List | Angle} $direction - Linear gradient direction
 /// @param {Arglist} $color-stops - List of color-stops composing the gradient
@@ -90,6 +89,5 @@
   }
 
   background: nth(nth($color-stops, 1), 1);
-  background: -webkit-linear-gradient(legacy-direction($direction), $color-stops);
   background: linear-gradient($direction, $color-stops);
 }

src/js/fullscreen-api.js

@@ -35,26 +35,6 @@ const apiMap = [
     'webkitfullscreenchange',
     'webkitfullscreenerror',
     '-webkit-full-screen'
-  ],
-  // Mozilla
-  [
-    'mozRequestFullScreen',
-    'mozCancelFullScreen',
-    'mozFullScreenElement',
-    'mozFullScreenEnabled',
-    'mozfullscreenchange',
-    'mozfullscreenerror',
-    '-moz-full-screen'
-  ],
-  // Microsoft
-  [
-    'msRequestFullscreen',
-    'msExitFullscreen',
-    'msFullscreenElement',
-    'msFullscreenEnabled',
-    'MSFullscreenChange',
-    'MSFullscreenError',
-    '-ms-fullscreen'
   ]
 ];
 

src/js/player.js

@@ -2055,8 +2055,6 @@ class Player extends Component {
 
     if (!isFs && el.matches) {
       isFs = el.matches(':' + this.fsApi_.fullscreen);
-    } else if (!isFs && el.msMatchesSelector) {
-      isFs = el.msMatchesSelector(':' + this.fsApi_.fullscreen);
     }
 
     this.isFullscreen(isFs);