Vue cli3 解析sass(.scss文件)失败

Question

配置如下:

vue.config.js

    css: {
        loaderOptions: {
            sass: {
                prependData: `@import "~@/styles/variables.sass"`
            },
            scss: {
                prependData: `@import "~@/styles/variables.scss";`
            }
        }
    },

index.scss

.take-o-exchange  .van-col {
text-align: center;
.van-button {
    @include fontDpr(18);
    border: none;
}
}

解析结果