Javascript 在这个读取文件的节点片段中，什么是实验性的？

我在这里运行代码：

得到了这个警告：

(node:13735) ExperimentalWarning: readline Interface [Symbol.asyncIterator] is an experimental feature. This feature could change at any time
(node:13735) ExperimentalWarning: Readable[Symbol.asyncIterator] is an experimental feature. This feature could change at any time

究竟什么是实验性的？没有行号。

上面写着：

readline接口[Symbol.asyncIterator]

因此，请寻找一个接口：

您正在迭代的：

(node:13735) ExperimentalWarning: readline Interface [Symbol.asyncIterator] is an experimental feature. This feature could change at any time
(node:13735) ExperimentalWarning: Readable[Symbol.asyncIterator] is an experimental feature. This feature could change at any time

const rl = readline.createInterface

const line of rl