Implicit casting from jsonb array to psql text array

jsonb_array_to_text_array.sql

-- https://stackoverflow.com/a/45244285
CREATE OR REPLACE FUNCTION public.jsonb_array_to_text_array(
  JSONB
) RETURNS TEXT[] AS
$f$
SELECT array_agg(x::TEXT) FROM jsonb_array_elements($1) t(x);
$f$
  LANGUAGE sql
IMMUTABLE;

CREATE CAST (JSONB AS TEXT[]) WITH FUNCTION public.jsonb_array_to_text_array(JSONB) AS IMPLICIT;