feat(luacheckrc): some internal rules improvements

.luacheckrc

@@ -1,24 +1,29 @@
 stds.nvim = {
-    read_globals = { "vim", "jit" },
+  globals = {
+    vim = { fields = { "g" } },
+    table = { fields = { "unpack" } },
+    package = { fields = { "searchers" } },
+  },
+  read_globals = {
+    "vim",
+    "jit",
+    "packer_plugins",
+  },
 }
 std = "lua51+nvim"
 
 -- Rerun tests only if their modification time changed.
 cache = true
 
--- NOTE: rules from 100...400 are specific for Neovim stuff, e.g. vim.opt
+-- NOTE: rules from 200...400 are specific for Neovim stuff, e.g. vim.opt
 ignore = {
-	"113",     -- Accessing an undefined global variable.
-	"121",     -- Setting a read-only global variable.
-	"122/vim", -- Setting a read-only field of a global variable.
-	"143",     -- Accessing an undefined field of a global variable.
   "212/_.*", -- Unused argument, for variables with "_" prefix.
   "331", -- Value assigned to a local variable is mutated but never accessed.
   "631", -- Line is too long.
 }
 
 exclude_files = {
-    "plugin/packer_compiled.lua"
+  "plugin/packer_compiled.lua",
 }
 
--- vim: ft=lua
+-- vim: ft=lua sw=2 ts=2