//! General type aliases.
use crateCustomUserError;
/// Type alias to represent the function used to filter options.
///
/// The function receives:
/// - Current user input, filter value
/// - Current option being evaluated, with type preserved
/// - String value of the current option
/// - Index of the current option in the original list
///
/// The return type should be whether the current option should be displayed to the user.
///
/// # Examples
///
/// ```
/// use inquire::type_aliases::Filter;
///
/// let filter: Filter<str> = &|filter, _, string_value, _| -> bool {
/// let filter = filter.to_lowercase();
///
/// string_value.to_lowercase().starts_with(&filter)
/// };
/// assert_eq!(false, filter("san", "New York", "New York", 0));
/// assert_eq!(false, filter("san", "Los Angeles", "Los Angeles", 1));
/// assert_eq!(false, filter("san", "Chicago", "Chicago", 2));
/// assert_eq!(false, filter("san", "Houston", "Houston", 3));
/// assert_eq!(false, filter("san", "Phoenix", "Phoenix", 4));
/// assert_eq!(false, filter("san", "Philadelphia", "Philadelphia", 5));
/// assert_eq!(true, filter("san", "San Antonio", "San Antonio", 6));
/// assert_eq!(true, filter("san", "San Diego", "San Diego", 7));
/// assert_eq!(false, filter("san", "Dallas", "Dallas", 8));
/// assert_eq!(true, filter("san", "San Francisco", "San Francisco", 9));
/// assert_eq!(false, filter("san", "Austin", "Austin", 10));
/// assert_eq!(false, filter("san", "Jacksonville", "Jacksonville", 11));
/// assert_eq!(true, filter("san", "San Jose", "San Jose", 12));
/// ```
pub type Filter<'a, T> = &'a dyn Fn ;
/// Type alias to represent the function used to retrieve text input suggestions.
/// The function receives the current input and should return a collection of strings
/// containing the suggestions to be made to the user.
pub type Suggester<'a> = &'a dyn Fn ;
/// Type alias to represent the function used to retrieve an optional autocompletion suggestion.
/// The function receives the current input and should return the suggestion (if any)
/// that will replace the current input.
pub type Completer<'a> = &'a dyn Fn ;