我正在尝试获取MOCHAJS测试中的代码覆盖率。我正在使用毯子，但我得到0%的覆盖率0SLOC为什么我不明白。我的package.json是{"name":"basics","version":"1.0.0","description":"","main":"index.js","scripts":{"test":"mocha&&mochatest--requireblanket--reporterhtml-cov>coverage.html"},"author":"","license":"MIT","devDependencies":{"chai":"~2.2.0","mocha"