sourceTextModule.hasAsyncGraph()

• 返回：<boolean>

  ¥Returns: <boolean>

遍历依赖图，如果依赖中的任何模块或本模块本身包含顶层 await 表达式，则返回 true，否则返回 false。

¥Iterates over the dependency graph and returns true if any module in its dependencies or this module itself contains top-level await expressions, otherwise returns false.

如果图足够大，搜索速度可能会很慢。

¥The search may be slow if the graph is big enough.

这需要先实例化模块。如果模块尚未实例化，则会抛出错误。

¥This requires the module to be instantiated first. If the module is not instantiated yet, an error will be thrown.