enabled and per_filetype

[MijikHna]

I am trying to get cmp-dap running. In the documentation is stated that it is possible to set a function for enabled and set providers for filetypes in per_filetype. It seems like dap provider just don't start. Here are lines which I think are imported for dap-provider get running

opts = {
   enabled = function()
       return vim.bo.buftype ~= "prompt" and vim.bo.filetype ~= "DressingInput"
   end,
   ...
   sources = {
       default = { "lsp", "path", "snippets", "buffer" },
       providers =  {
            ...
           dap = {
               name = "dap",
               module = "blink.compat.source",
               enabled = function()
                   return require("cmp_dap").is_dap_buffer()
               end,
          }
      },
     per_filetype = {
          ["dap-repl"] = { "lsp", "dap", "buffer" },
          dapui_watches = { "lsp", "dap", "buffer" },
          dapui_hover = { "lsp", "dap", "buffer" },
          sql = { "lsp", "dadbod", "buffer" },
        }
    }
    ....

Maybe I just don't fully understand per provider enabled and per_filetype options.