pub fn erase(key: String) -> Nil

pub fn get(key: String, default_value: a) -> a

pub fn get_int(key: String, default_value: Int) -> Int

pub fn get_map(key: String) -> Dict(String, a)

pub fn get_map_value(
  key: String,
  property_key: String,
  default_value: a,
) -> a

pub fn get_str(key: String, default_value: String) -> String

pub fn get_with_default(a: String, default_value: a) -> a

pub fn keys() -> List(String)

pub fn nt_get_with_default(a: a, default_value: b) -> b

pub fn nt_put(key: a, value: b) -> Nil

pub fn put(key: String, value: a) -> Nil

pub fn put_int(key: String, value: Int) -> Nil

pub fn put_str(key: String, value: String) -> Nil

pub fn set_map_value(
  key: String,
  property_key: String,
  property_value: Dynamic,
) -> Nil