builtins: add condition for sources that needs a config file (#152)

Author: mochaaP

lua/null-ls/builtins/formatting/cbfmt.lua

@@ -19,6 +19,10 @@ return h.make_builtin({
             "--best-effort",
         },
         to_stdin = true,
+        -- cbfmt requires a config file
+        condition = function(utils)
+            return utils.root_has_file(".cbfmt.toml")
+        end,
     },
     factory = h.formatter_factory,
 })

lua/null-ls/builtins/formatting/treefmt.lua

@@ -8,22 +8,17 @@ return h.make_builtin({
     meta = {
         url = "https://github.com/numtide/treefmt",
         description = "One CLI to format your repo",
-        usage = [[
-local sources = {
-    null_ls.builtins.formatting.treefmt.with({
-        -- treefmt requires a config file
-        condition = function(utils)
-            return utils.root_has_file("treefmt.toml")
-        end,
-    }),
-}]],
     },
     method = FORMATTING,
     filetypes = {},
     generator_opts = {
         command = "treefmt",
         args = { "--allow-missing-formatter", "--stdin", "$FILENAME" },
         to_stdin = true,
+        -- treefmt requires a config file
+        condition = function(utils)
+            return utils.root_has_file("treefmt.toml")
+        end,
     },
     factory = h.formatter_factory,
 })