@function __negate-function($arguments...) {
  $predicate: __this("predicate");

  @return not __call($predicate, __this(), $arguments...);
}

@function __negate($predicate) {
  @if not(__function-exists($predicate)) {
    @error 'FUNC_ERROR_TEXT';
  }

  $_: __scope(
    (
      "predicate": $predicate
    )
  );
  $negate-function: __bind("__negate-function");
  $_: __scope(false);

  @return $negate-function;
}

/// Creates a function that negates the result of the predicate `$function`. The
/// `$function` predicate is invoked with the `_this` binding and arguments of the
/// created function.
///
///
/// @access public
/// @group Function
/// @param {Function} $predicate The predicate to negate.
/// @returns {Function} Returns the new function.
/// @example scss
///     @function is-even($n, $args...) {
///         @return $n % 2 == 0;
///     }
///
///     $foo: _filter((1, 2, 3, 4, 5, 6), _negate(is-even));
///     // => (1, 3, 5)

@function _negate($args...) {
  @return call(get-function("__negate"), $args...);
}