[Refactor/Bugfix] Improve null ls handler (#1277)

1 files changed, 55 insertions, 0 deletions

diff --git a/lua/lsp/null-ls/services.lua b/lua/lsp/null-ls/services.lua
new file mode 100644
index 00000000..89073e5c
--- /dev/null
+++ b/lua/lsp/null-ls/services.lua
@@ -0,0 +1,55 @@
+local M = {}
+
+local logger = require("core.log"):get_default()
+
+local function find_root_dir()
+  if lvim.builtin.rooter.active then
+    --- use vim-rooter to set root_dir
+    vim.cmd "let root_dir = FindRootDirectory()"
+    return vim.api.nvim_get_var "root_dir"
+  end
+
+  -- TODO: Rework this to not make it javascript specific
+  --- use LSP to set root_dir
+  local lsp_utils = require "lsp.utils"
+  local ts_client = lsp_utils.get_active_client_by_ft "typescript"
+  if ts_client == nil then
+    logger.error "Unable to determine root directory since tsserver didn't start correctly"
+    return nil
+  end
+
+  return ts_client.config.root_dir
+end
+
+local function from_node_modules(command)
+  local root_dir = find_root_dir()
+  if not root_dir then
+    return nil
+  end
+
+  return root_dir .. "/node_modules/.bin/" .. command
+end
+
+local local_providers = {
+  prettier = { find = from_node_modules },
+  prettierd = { find = from_node_modules },
+  prettier_d_slim = { find = from_node_modules },
+  eslint_d = { find = from_node_modules },
+  eslint = { find = from_node_modules },
+}
+
+function M.find_command(command)
+  if local_providers[command] then
+    local local_command = local_providers[command].find(command)
+    if local_command and vim.fn.executable(local_command) == 1 then
+      return local_command
+    end
+  end
+
+  if vim.fn.executable(command) == 1 then
+    return command
+  end
+  return nil
+end
+
+return M