Elixir, with its powerful pattern matching and support for pipelining, can handle CSV files efficiently, even without third-party libraries.
In Elixir, you can use the Jason library, a popular choice for JSON parsing and generation.
Jason
First, add a TOML parser to your mix dependencies.
Elixir doesn’t include XML parsing in its standard library.
Elixir doesn’t include built-in YAML support.