@function __omit($map, $predicate, $this-arg: null, $args...) {
    @if $map == null {
        @return ();
    }

    $map: __to-map($map);
    
    @if not __function-exists($predicate) {
        $omitted-keys: __base-flatten(($predicate, $this-arg, $args));

        @each $key in $omitted-keys {
            $map: map-remove($map, $key);
        }

        @return $map;
    }

    $predicate: __bind-callback($predicate, $this-arg, 3);
    $result: __pick-by-callback($map, __negate($predicate));

    @return $result;
}


/// The opposite of `_pick`; this method creates a map composed of the
/// own and inherited enumerable properties of `$map` that are not omitted.
/// 
/// Property names may be specified as individual arguments or as lists of
/// property names. If `$predicate` is provided it is invoked for each property
/// of `$map` omitting the properties `$predicate` returns truthy for. The
/// predicate is bound to `$this-arg` and invoked with three arguments;
/// (value, key, map).
///
///
/// @access public
/// @group Map
/// @param {Map} $map The source map.
/// @param {Function|String...|List} $predicate The function invoked per
///  iteration or property names to omit, specified as individual property
///  names or lists of property names.
/// @param {*} $this-arg [null] - The `_this` binding of `$predicate`.
/// @returns {Map} Returns the new map.
/// @example scss
/// $map: ( 'user': 'fred', 'age': 40 );
/// $foo: _omit($map, 'age');
/// // => ( 'user': 'fred' )
/// $foo: _omit($map, _is-number);
/// // => ( 'user': 'fred' )

@function _omit($args...) {
    @return call(get-function('__omit'), $args...);
}