Function traverse

Returns {
    <A, R, O, E, B>(
        f: (a: A) => Kind<F, R, O, E, B>,
    ): <TR, TO, TE>(
        self: TreeF.TreeF<TE, A>,
    ) => Kind<F, R, O, E, TreeF.TreeF<TE, B>>;
    <TR, TO, TE, A, R, O, E, B>(
        self: TreeF.TreeF<TE, A>,
        f: (a: A) => Kind<F, R, O, E, B>,
    ): Kind<F, R, O, E, TreeF.TreeF<TE, B>>;
}