the node fs module to use.
the current instance for chaining.
Dynamically import the Node.js file system module in a Node environment.
This method or the equivalent withFS() must be called before attempting to read files in a Node environment.
In a browser environment, this method will log an error since file system access is not supported.
the imported fs module if successful, otherwise undefined.
Provide a node file system module to be used for reading files. This method or the equivalent
loadFileSystem()must be called before attempting to read files in a Node environment.