vue前端项目npm run build:prod打包后放在nginx上运行出错？

Question

vue前端项目npm run build:prod打包后放在nginx上运行，项目是一个后台前端，在本地运行时正常，放在服务器上时菜单不显示了，浏览器控制台报错

菜单不显示：

菜单显示：

出错的地方是菜单栏一个变量未识别，

<template>
  <div v-if="variables" :class="{'has-logo':showLogo}" :style="{ backgroundColor: settings.sideTheme === 'theme-dark' ? variables.menuBackground : variables.menuLightBackground }">
    <logo v-if="showLogo" :collapse="isCollapse" />
    <el-scrollbar :class="settings.sideTheme" wrap-class="scrollbar-wrapper">
      <el-menu
        :default-active="activeMenu"
        :collapse="isCollapse"
        :background-color="settings.sideTheme === 'theme-dark' ? variables.menuBackground : variables.menuLightBackground"
        :text-color="settings.sideTheme === 'theme-dark' ? variables.menuColor : variables.menuLightColor"
        :unique-opened="true"
        :active-text-color="settings.theme"
        :collapse-transition="false"
        mode="vertical"
      >
        <sidebar-item
          v-for="(route, index) in sidebarRouters"
          :key="route.path + index"
          :item="route"
          :base-path="route.path"
        />
      </el-menu>
    </el-scrollbar>
  </div>
</template>

<script>
import { mapGetters, mapState } from 'vuex'
import Logo from './Logo'
import SidebarItem from './SidebarItem'
import variables from '@/styles/variables.scss'

export default {
  components: { SidebarItem, Logo },
  computed: {
    ...mapState(['settings']),
    ...mapGetters(['sidebarRouters', 'sidebar']),
    activeMenu() {
      const route = this.$route
      const { meta, path } = route
      // if set path, the sidebar will highlight the path you set
      if (meta.activeMenu) {
        return meta.activeMenu
      }
      return path
    },
    showLogo() {
      return this.$store.state.settings.sidebarLogo
    },
    variables() {
      return variables
    },
    isCollapse() {
      return !this.sidebar.opened
    }
  }
}
</script>

// sidebar
$menuText:#bfcbd9;
$menuActiveText:#f4f4f5;
$subMenuActiveText:#f4f4f5; //https://github.com/ElemeFE/element/issues/12951
$menuBg:#304156;
$menuHover:#263445;
$subMenuBg:#1f2d3d;
$subMenuHover:#001528;
$sideBarWidth: 210px;
// the :export directive is the magic sauce for webpack
// https://www.bluematador.com/blog/how-to-share-variables-between-js-and-sass
:export {
  menuColor: $menuText;
  menuLightColor: $menuActiveText;
  menuText: $menuText;
  menuActiveText: $menuActiveText;
  menuBackground: $menuBg;
  menuLightBackground: #263445;
  subMenuActiveText: $subMenuActiveText;
  menuBg: $menuBg;
  menuHover: $menuHover;
  subMenuBg: $subMenuBg;
  subMenuHover: $subMenuHover;
  sideBarWidth: $sideBarWidth;
}

问了gpt说这样改，方法试过都无效。

求大佬帮忙看看！！

Answer 1

解决了 结合chatGpt
最初的npm run build:prod 警告

 warning  in ./src/layout/components/Sidebar/index.vue?vue&type=script&lang=js&

export 'default' (imported as 'variables') was not found in '@/styles/variables.scss' (module has no exports)

应该是没有解析到
gpt回答：

Sass变量只能在预处理器中使用，而无法在实际的CSS样式中使用。

如果您想在样式文件中使用这些变量，一种解决方法是使用CSS自定义属性（CSS Variables）来替代Sass变量。

首先，在您的variables.scss文件中，将变量定义为CSS自定义属性，如下所示：

scss
Copy code
//
:root {
  --menu-text: #bfcbd9;
  --menu-active-text: #f4f4f5;
  --sub-menu-active-text: #f4f4f5; //https://github.com/ElemeFE/element/issues/12951
  --menu-bg: #304156;
  --menu-hover: #263445;
  --menu-light-background: #263445;
  --sub-menu-bg: #1f2d3d;
  --sub-menu-hover: #001528;
  --side-bar-width: 210px;
}

然后在引用的地方修改就行了。