How to push to json array

const table1 = pgTable("table1", {
  messages: json("messages")
    .array()
    .$type<Message[]>()
    .notNull()
    .default(sql`ARRAY[]::json[]`)
})

await ctx.db
  .update(table1)
  .set({
    messages: sql`array_cat(${table1.messages}, ${newMessages})`,
  })