local M = {}

function M.config()
	local status_ok, null_ls = pcall(require, "null-ls")
	if not status_ok then
		return
	end

	-- Check supported formatters
	-- https://github.com/jose-elias-alvarez/null-ls.nvim/tree/main/lua/null-ls/builtins/formatting
	local formatting = null_ls.builtins.formatting

	-- Check supported linters
	-- https://github.com/jose-elias-alvarez/null-ls.nvim/tree/main/lua/null-ls/builtins/diagnostics
	local diagnostics = null_ls.builtins.diagnostics

	null_ls.setup {
		debug = false,
		sources = {
			-- Set a formatter
			formatting.prettierd,
			formatting.black,

			-- Set a linter
			diagnostics.eslint_d,
		},
		-- Format before save
		on_attach = function(client)
			if client.resolved_capabilities.document_formatting then
				vim.cmd "autocmd BufWritePre <buffer> lua vim.lsp.buf.formatting_sync()"
			end
		end,
	}
end

return M