def Lake.createParentDirs (path : System.FilePath) : IO Unit

Creates any missing parent directories of path.

def Lake.removeFileIfExists (path : System.FilePath) : IO Unit

Remove the file at path if it exists.

def Lake.writeFileIfNew (path : System.FilePath) (content : String) : IO Unit

Write the UTF-8 encoded string content to path. If the file already exists, does nothing.

def Lake.writeBinFileIfNew (path : System.FilePath) (content : ByteArray) : IO Unit

Write the bytes of content to path. If the file already exists, does nothing.

partial def Lake.removeDirAllIfExists (path : System.FilePath) : IO Unit

Remove a directory and all its contents. Like IO.FS.removeDirAll, but does not fail if path does not exist or if a file is first deleted by a racing process.

def Lake.copyFile (src dst : System.FilePath) : IO Unit

Copy a file from src to dst.

def Lake.resolvePath (path : System.FilePath) : BaseIO System.FilePath

Returns the normalized real path of a file if it exists. Otherwise, returns "".

@[inline]

def Lake.resolvePath? (path : System.FilePath) : BaseIO (Option System.FilePath)

Returns the normalized real path of a file if and only if it exists.