diff --git a/lua/navigator/cclshierarchy.lua b/lua/navigator/cclshierarchy.lua
index fa2186c..9d0664e 100644
--- a/lua/navigator/cclshierarchy.lua
+++ b/lua/navigator/cclshierarchy.lua
@@ -4,7 +4,7 @@ local log = util.log
 local partial = util.partial
 local lsphelper = require('navigator.lspwrapper')
 local uv = vim.uv or vim.loop
-local cwd = vim.loop.cwd()
+local cwd = uv.cwd()
 
 local path_sep = require('navigator.util').path_sep()
 local path_cur = require('navigator.util').path_cur()
diff --git a/lua/navigator/definition.lua b/lua/navigator/definition.lua
index e13cb79..4e9f4c0 100644
--- a/lua/navigator/definition.lua
+++ b/lua/navigator/definition.lua
@@ -76,7 +76,7 @@ local function def_preview(timeout_ms, method)
   -- result = {vim.tbl_deep_extend("force", {}, unpack(result))}
   -- log("def-preview", result)
   for _, value in pairs(result) do
-    if value ~= nil and not vim.tbl_isempty(value.result) then
+    if value ~= nil and value.result ~= nil and not vim.tbl_isempty(value.result) then
       table.insert(data, value.result[1])
     end
   end
diff --git a/lua/navigator/reference.lua b/lua/navigator/reference.lua
index 281c80f..a6a7bc2 100644
--- a/lua/navigator/reference.lua
+++ b/lua/navigator/reference.lua
@@ -6,7 +6,7 @@ local lsp = require('navigator.lspwrapper')
 local trace = require('navigator.util').trace
 -- local partial = util.partial
 -- local cwd = vim.loop.cwd()
-local uv = vim.loop
+local uv = vim.uv or vim.loop
 -- local lsphelper = require "navigator.lspwrapper"
 local locations_to_items = lsphelper.locations_to_items
 
@@ -28,10 +28,9 @@ local function order_locations(locations)
   return locations
 end
 
-local function warmup_treesitter(options)
-  local api = vim.api
+local function warmup_treesitter()
   local parsers = require('nvim-treesitter.parsers')
-  local bufnr = options.bufnr or api.nvim_get_current_buf()
+  local bufnr = vim.api.nvim_get_current_buf()
   local parser = parsers.get_parser(bufnr)
   if not parser then
     log('err: ts not loaded ' .. vim.o.ft)
@@ -276,17 +275,8 @@ local ref_req = function()
     _NgConfigValues.closer()
   end
 
-  local warmup_ts
   if _NgConfigValues.treesitter_analysis then
-    warmup_ts = uv.new_async(function()
-      warmup_treesitter(cfg)
-      if warmup_ts:is_active() then
-        warmup_ts:close()
-      end
-    end)
-    vim.defer_fn(function()
-      warmup_ts:send()
-    end, 5)
+    warmup_treesitter()
   end
   -- lsp.call_async("textDocument/references", ref_params, ref_hdlr) -- return asyncresult, canceller
   local bufnr = vim.api.nvim_get_current_buf()
diff --git a/lua/navigator/treesitter.lua b/lua/navigator/treesitter.lua
index 294aaf7..605c7f6 100644
--- a/lua/navigator/treesitter.lua
+++ b/lua/navigator/treesitter.lua
@@ -228,7 +228,8 @@ local function get_definitions(bufnr)
   local local_nodes = ts_locals.get_locals(bufnr)
   -- Make sure the nodes are unique.
   local nodes_set = {}
-  for _, loc in ipairs(local_nodes) do
+  for _, nodes in ipairs(local_nodes) do
+    local loc = nodes["local"]
     trace(loc)
     if loc.definition then
       ts_locals.recurse_local_nodes(loc.definition, function(_, node, _, match)
diff --git a/playground/init.lua b/playground/init.lua
index 6c50839..53c5f28 100644
--- a/playground/init.lua
+++ b/playground/init.lua
@@ -1,5 +1,6 @@
 vim.cmd([[set runtimepath=$VIMRUNTIME]])
-local os_name = vim.loop.os_uname().sysname
+local uv = vim.uv or vim.loop
+local os_name = uv.os_uname().sysname
 
 local is_windows = os_name == 'Windows' or os_name == 'Windows_NT'
 
@@ -26,7 +27,7 @@ local plugin_folder = function()
 end
 
 local lazypath = package_root .. sep .. 'lazy.nvim'
-if not vim.loop.fs_stat(lazypath) then
+if not uv.fs_stat(lazypath) then
   vim.fn.system({
     'git',
     'clone',
diff --git a/thread.lua b/thread.lua
index 827b033..2f2d122 100644
--- a/thread.lua
+++ b/thread.lua
@@ -17,4 +17,5 @@ local func = function(p, uv)
   assert(elapsed >= 1000, "elapsed should be at least delay ")
 end
 
-func(print, vim.loop)
+local uv = vim.uv or vim.loop
+func(print, uv)