NewWalker creates a new Walker with the provided options.

WithFilter sets a filter function for the Walker.

WithFollowSymlinks sets whether the walker should follow symbolic links.

WithFS sets the file system for the Walker.

WithPaths sets the paths for the Walker.

Node represents a file or directory in the AST.

Walker traverses the file system and builds the AST.

NodeType represents the type of the node: file or directory.

VisitFunc defines the function signature for pre- and post-visit callbacks.

WalkerOption defines a function type for configuring the Walker.