module.findSourceMap(path[, error])

path 是文件的解析路径,应为其获取相应的源映射。

path is the resolved path for the file for which a corresponding source map should be fetched.

The error instance should be passed as the second parameter to findSourceMap in exceptional flows, such as when an overridden Error.prepareStackTrace(error, trace) is invoked. Modules are not added to the module cache until they are successfully loaded. In these cases, source maps are associated with the error instance along with the path.