This file also declares the entry point class for the module (line 6).
这个文件还声明模块的入口点类(第6行)。
This module file becomes your test suite entry point.
此模块文件就是测试套件的入口点。
The figure shows how exports are an entry point from the outside world, while imports enable you to call outside the module.
该图表明,导出是外部的入口点,而导入则允许您调用模块外的功能。
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