​## 单个 JS 文件测试

用 [Mochajs](https://mochajs.org/)。

```bash pnpm init -y pnpm install –save-dev mocha mkdir test code test/test.js ```

`package.json`:

```json "scripts": { "test": "mocha" } ```

```bash pnpm test ```

参考资料：

1. https://stackoverflow.com/a/43188403/12539782
2. [How to Start Unit Testing Your JavaScript Code](https://www.freecodecamp.org/news/how-to-start-unit-testing-javascript/)