Karma.config: sass 波浪号导入器

Question

我通过 angular-cli 建立了一个 Angular 6 项目。

我安装了karma-scss-preprocessor 作为开发依赖项以在业力测试中加载 sass 文件。 关注 karma.config：

...
config.set({
basePath: '',
browserNoActivityTimeout: 60000,
frameworks: ['jasmine', '@angular-devkit/build-angular'],
plugins: [
  require('karma-jasmine'),
  require('karma-chrome-launcher'),
  require('karma-phantomjs-launcher'),
  require('karma-jasmine-html-reporter'),
  require('karma-coverage-istanbul-reporter'),
  require('@angular-devkit/build-angular/plugins/karma'),
  require('karma-scss-preprocessor')
],
preprocessors: {
  'styles.scss': ['scss'],
},
files: [
  { pattern: 'styles.scss', watched: true,  included: true, served: true }
],
...

现在我得到了错误：

File to import not found or unreadable: ~@onepackage/onelib/scss/all.

由于在 styles.scss 中导入 onepackage/lib 时的波浪号。

我尝试在 karma.json 的插件部分添加 require('node-sass-tilde-importer')，但没有解决。

有什么建议吗？

Answer 1

你必须在karma-scss-preprocessor选项中调用require('node-sass-tilde-importer')

...
plugins: [
  require('karma-jasmine'),
  require('karma-chrome-launcher'),
  require('karma-phantomjs-launcher'),
  require('karma-jasmine-html-reporter'),
  require('karma-coverage-istanbul-reporter'),
  require('@angular-devkit/build-angular/plugins/karma'),
  require('karma-scss-preprocessor')
],
scssPreprocessor: {
  options: {
    importer: require('node-sass-tilde-importer')
  }
},
...