Codemod 是一个工具/库，它可以帮你处理那些只有部分自动化功能，部分场合还需人工干预的大规模代码库。示例代码：-m Have regex work over multiple lines (e.g. have dot match newlines). By default, codemod applies the regex one line at a time. -d The path whose ancestor files are to be explored. Defaults to current dir. --start A path:line
