这一版本优化了很多

node_modules/wot-design-uni/components/common/abstracts/_config.scss

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+/**
+ * SCSS 配置项：命名空间以及BEM
+ */
+$namespace: 'wd';
+$elementSeparator: '__';
+$modifierSeparator: '--';
+$state-prefix: 'is-';

node_modules/wot-design-uni/components/common/abstracts/_function.scss

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+/**
+ * 辅助函数
+ */
+@import 'config';
+$default-theme: #4d80f0 !default; // 正常色
+
+/* 转换成字符串 */
+@function selectorToString($selector) {
+  $selector: inspect($selector);
+  $selector: str-slice($selector, 2, -2);
+
+  @return $selector;
+}
+
+/* 判断是否存在 Modifier */
+@function containsModifier($selector) {
+  $selector: selectorToString($selector);
+
+  @if str-index($selector, $modifierSeparator) {
+    @return true;
+  }
+
+  @else {
+    @return false;
+  }
+}
+
+/* 判断是否存在伪类 */
+@function containsPseudo($selector) {
+  $selector: selectorToString($selector);
+
+  @if str-index($selector, ':') {
+    @return true;
+  }
+
+  @else {
+    @return false;
+  }
+}
+
+
+/**
+ * 主题色切换
+ * @params $theme-color 主题色
+ * @params $type 变暗’dark‘ 变亮 'light'
+ * @params $mix-color 自己设置的混色
+ */
+@function themeColor($theme-color, $type: "", $mix-color: "") {
+  @if $default-theme !=#4d80f0 {
+    @if $type=="dark" {
+      @return darken($theme-color, 10%);
+    }
+
+    @else if $type=="light" {
+      @return lighten($theme-color, 10%);
+    }
+
+    @else {
+      @return $theme-color;
+    }
+  }
+
+  @else {
+    @return $mix-color;
+  }
+}
+
+/**
+ * 颜色结果切换， 如果开启线性渐变色 使用渐变色，如果没有开启，那么使用主题色
+ * @params $open-linear 是否开启线性渐变色
+ * @params $deg 渐变色角度
+ * @params $theme-color 当前配色
+ * @params [Array] $set 主题色明暗设置，与 $color-list 数量对应
+ * @params [Array] $color-list 渐变色顺序， $color-list 和 $per-list 数量相同
+ * @params [Array] $per-list 渐变色比例
+ */
+@function resultColor($deg, $theme-color, $set, $color-list, $per-list) {
+  // 开启渐变
+
+  $len: length($color-list);
+  $arg: $deg;
+
+  @for $i from 1 through $len {
+    $arg: $arg + ","+ themeColor($theme-color, nth($set, $i), nth($color-list, $i)) + " "+ nth($per-list, $i);
+  }
+
+  @return linear-gradient(unquote($arg));
+
+}

node_modules/wot-design-uni/components/common/abstracts/_mixin.scss

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+/**
+ * 混合宏
+ */
+@import "config";
+@import "function";
+
+/**
+  * BEM，定义块（b)
+  */
+@mixin b($block) {
+  $B: $namespace + "-"+ $block !global;
+
+  .#{$B} {
+    @content;
+  }
+}
+
+/* 定义元素（e），对于伪类，会自动将 e 嵌套在 伪类 底下 */
+@mixin e($element...) {
+  $selector: &;
+  $selectors: "";
+
+  @if containsPseudo($selector) {
+    @each $item in $element {
+      $selectors: #{$selectors + "." + $B + $elementSeparator + $item + ","};
+    }
+
+    @at-root {
+      #{$selector} {
+        #{$selectors} {
+          @content;
+        }
+      }
+    }
+  }
+
+  @else {
+    @each $item in $element {
+      $selectors: #{$selectors + $selector + $elementSeparator + $item + ","};
+    }
+
+    @at-root {
+      #{$selectors} {
+        @content;
+      }
+    }
+  }
+}
+
+
+
+/* 此方法用于生成穿透样式 */
+
+/* 定义元素（e），对于伪类，会自动将 e 嵌套在 伪类 底下 */
+@mixin edeep($element...) {
+  $selector: &;
+  $selectors: "";
+
+  @if containsPseudo($selector) {
+    @each $item in $element {
+      $selectors: #{$selectors + "." + $B + $elementSeparator + $item + ","};
+    }
+
+    @at-root {
+      #{$selector} {
+        :deep() {
+          #{$selectors} {
+            @content;
+          }
+        }
+      }
+    }
+  }
+
+  @else {
+    @each $item in $element {
+      $selectors: #{$selectors + $selector + $elementSeparator + $item + ","};
+    }
+
+    @at-root {
+      :deep() {
+        #{$selectors} {
+          @content;
+        }
+      }
+    }
+  }
+}
+
+
+/* 定义状态（m） */
+@mixin m($modifier...) {
+  $selectors: "";
+
+  @each $item in $modifier {
+    $selectors: #{$selectors + & + $modifierSeparator + $item + ","};
+  }
+
+  @at-root {
+    #{$selectors} {
+      @content;
+    }
+  }
+}
+
+/* 定义状态（m） */
+@mixin mdeep($modifier...) {
+  $selectors: "";
+
+  @each $item in $modifier {
+    $selectors: #{$selectors + & + $modifierSeparator + $item + ","};
+  }
+
+  @at-root {
+    :deep() {
+      #{$selectors} {
+        @content;
+      }
+    }
+  }
+}
+
+/* 对于需要需要嵌套在 m 底下的 e，调用这个混合宏，一般在切换整个组件的状态，如切换颜色的时候 */
+@mixin me($element...) {
+  $selector: &;
+  $selectors: "";
+
+  @if containsModifier($selector) {
+    @each $item in $element {
+      $selectors: #{$selectors + "." + $B + $elementSeparator + $item + ","};
+    }
+
+    @at-root {
+      #{$selector} {
+        #{$selectors} {
+          @content;
+        }
+      }
+    }
+  }
+
+  @else {
+    @each $item in $element {
+      $selectors: #{$selectors + $selector + $elementSeparator + $item + ","};
+    }
+
+    @at-root {
+      #{$selectors} {
+        @content;
+      }
+    }
+  }
+}
+
+/* 状态，生成 is-$state 类名 */
+@mixin when($states...) {
+  @at-root {
+    @each $state in $states {
+      &.#{$state-prefix + $state} {
+        @content;
+      }
+    }
+  }
+}
+
+/**
+  * 常用混合宏
+  */
+
+/* 单行超出隐藏 */
+@mixin lineEllipsis {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+/* 多行超出隐藏 */
+@mixin multiEllipsis($lineNumber: 3) {
+  display: -webkit-box;
+  -webkit-box-orient: vertical;
+  -webkit-line-clamp: $lineNumber;
+  overflow: hidden;
+}
+
+/* 清除浮动 */
+@mixin clearFloat {
+  &::after {
+    display: block;
+    content: "";
+    height: 0;
+    clear: both;
+    overflow: hidden;
+    visibility: hidden;
+  }
+}
+
+/* 0.5px 边框 指定方向*/
+@mixin halfPixelBorder($direction: "bottom", $left: 0, $color: $-color-border-light) {
+  position: relative;
+
+  &::after {
+    position: absolute;
+    display: block;
+    content: "";
+
+    @if ($left==0) {
+      width: 100%;
+    }
+
+    @else {
+      width: calc(100% - #{$left});
+    }
+
+    height: 1px;
+    left: $left;
+
+    @if ($direction=="bottom") {
+      bottom: 0;
+    }
+
+    @else {
+      top: 0;
+    }
+
+    transform: scaleY(0.5);
+    background: $color;
+  }
+}
+
+
+/* 0.5px 边框 环绕 */
+@mixin halfPixelBorderSurround($color: $-color-border-light) {
+  position: relative;
+
+  &::after {
+    position: absolute;
+    display: block;
+    content: ' ';
+    pointer-events: none;
+    width: 200%;
+    height: 200%;
+    left: 0;
+    top: 0;
+    border: 1px solid $color;
+    transform: scale(0.5);
+    box-sizing: border-box;
+    transform-origin: left top;
+  }
+}
+
+@mixin buttonClear {
+  outline: none;
+  -webkit-appearance: none;
+  -webkit-tap-highlight-color: transparent;
+  background: transparent;
+}
+
+/**
+  * 三角形实现尖角样式，适用于背景透明情况
+  * @param $size 三角形高，底边为 $size * 2
+  * @param $bg 三角形背景颜色
+  */
+@mixin triangleArrow($size, $bg) {
+  @include e(arrow) {
+    position: absolute;
+    width: 0;
+    height: 0;
+  }
+
+  @include e(arrow-down) {
+    border-left: $size solid transparent;
+    border-right: $size solid transparent;
+    border-top: $size solid $bg;
+    transform: translateX(-50%);
+    bottom: calc(-1 * $size)
+  }
+
+  @include e(arrow-up) {
+    border-left: $size solid transparent;
+    border-right: $size solid transparent;
+    border-bottom: $size solid $bg;
+    transform: translateX(-50%);
+    top: calc(-1 * $size)
+  }
+
+  @include e(arrow-left) {
+    border-top: $size solid transparent;
+    border-bottom: $size solid transparent;
+    border-right: $size solid $bg;
+    transform: translateY(-50%);
+    left: calc(-1 * $size)
+  }
+
+  @include e(arrow-right) {
+    border-top: $size solid transparent;
+    border-bottom: $size solid transparent;
+    border-left: $size solid $bg;
+    transform: translateY(-50%);
+    right: calc(-1 * $size)
+  }
+}
+
+/**
+  * 正方形实现尖角样式，适用于背景不透明情况
+  * @param $size 正方形边长
+  * @param $bg 正方形背景颜色
+  * @param $z-index z-index属性值，不得大于外部包裹器
+  * @param $box-shadow 阴影
+*/
+@mixin squareArrow($size, $bg, $z-index, $box-shadow) {
+  @include e(arrow) {
+    position: absolute;
+    width: $size;
+    height: $size;
+    z-index: $z-index;
+  }
+
+  @include e(arrow-down) {
+    transform: translateX(-50%);
+    bottom: 0;
+
+    &:after {
+      content: "";
+      width: $size;
+      height: $size;
+      background-color: $bg;
+      position: absolute;
+      left: 0;
+      bottom: calc(-1 * $size / 2);
+      transform: rotateZ(45deg);
+      box-shadow: $box-shadow;
+    }
+  }
+
+  @include e(arrow-up) {
+    transform: translateX(-50%);
+    top: 0;
+
+    &:after {
+      content: "";
+      width: $size;
+      height: $size;
+      background-color: $bg;
+      position: absolute;
+      left: 0;
+      top: calc(-1 * $size / 2);
+      transform: rotateZ(45deg);
+      box-shadow: $box-shadow;
+    }
+  }
+
+  @include e(arrow-left) {
+    transform: translateY(-50%);
+    left: 0;
+
+    &:after {
+      content: "";
+      width: $size;
+      height: $size;
+      background-color: $bg;
+      position: absolute;
+      left: calc(-1 * $size / 2);
+      top: 0;
+      transform: rotateZ(45deg);
+      box-shadow: $box-shadow;
+    }
+  }
+
+  @include e(arrow-right) {
+    transform: translateY(-50%);
+    right: 0;
+
+    &:after {
+      content: "";
+      width: $size;
+      height: $size;
+      background-color: $bg;
+      position: absolute;
+      right: calc(-1 * $size / 2);
+      top: 0;
+      transform: rotateZ(45deg);
+      box-shadow: $box-shadow;
+    }
+  }
+}