导入指令不能在控制指令或mixin中使用

Question

有关如何解决此错误的任何想法？ Gulp是目前的构建任务经理。我使用的是Node：v8.2.0

{
  "name": "",
  "version": "1.0.0",
  "description": "",
  "main": "gulpfile.js",
  "dependencies": {
    "node-sass": "^4.5.3"
  },
  "devDependencies": {
    "browser-sync": "2.9.6",
    "gulp": "^3.9.0",
    "gulp-concat": "2.6.0",
    "gulp-csslint": "0.2.0",
    "gulp-jshint": "1.11.2",
    "gulp-sass": "2.0.4",
    "gulp-scss-lint": "0.3.4",
    "gulp-sourcemaps": "1.5.2",
    "gulp-uglify": "1.4.1",
    "gulp-util": "3.0.6",
    "jshint-stylish": "2.0.1",
    "npm": "^3.3.4",
    "yargs": "3.26.0"
  },