[Refactor] nvimtree to be configurable (#970)

* Refactor nvimtree to be configurable

* Correct the location of .stylua.toml in Contrib.md

Co-authored-by: Christian Chiarulli <chris.machine@pm.me>

lua/core/nvimtree.lua

@@ -1,74 +1,75 @@
--- --if not package.loaded['nvim-tree.view'] then
--- --  return
--- --end
---
 local M = {}
 local status_ok, nvim_tree_config = pcall(require, "nvim-tree.config")
 if not status_ok then
   return
 end
 --
+M.config = function()
+  O.plugin.nvimtree = {
+    side = "left",
+    show_icons = {
+      git = 1,
+      folders = 1,
+      files = 1,
+      folder_arrows = 1,
+      tree_width = 30,
+    },
+    ignore = { ".git", "node_modules", ".cache" },
+    auto_open = 1,
+    auto_close = 1,
+    quit_on_open = 0,
+    follow = 1,
+    hide_dotfiles = 1,
+    git_hl = 1,
+    root_folder_modifier = ":t",
+    tab_open = 0,
+    allow_resize = 1,
+    lsp_diagnostics = 1,
+    auto_ignore_ft = { "startify", "dashboard" },
+    icons = {
+      default = "",
+      symlink = "",
+      git = {
+        unstaged = "",
+        staged = "S",
+        unmerged = "",
+        renamed = "➜",
+        deleted = "",
+        untracked = "U",
+        ignored = "◌",
+      },
+      folder = {
+        default = "",
+        open = "",
+        empty = "",
+        empty_open = "",
+        symlink = "",
+      },
+    },
+  }
+end
+--
 M.setup = function()
   local g = vim.g
 
-  vim.o.termguicolors = true
+  for opt, val in pairs(O.plugin.nvimtree) do
+    g["nvim_tree_" .. opt] = val
+  end
 
-  g.nvim_tree_side = "left"
-  g.nvim_tree_width = 30
-  g.nvim_tree_ignore = { ".git", "node_modules", ".cache" }
-  g.nvim_tree_auto_open = 1
-  g.nvim_tree_auto_close = 1
-  g.nvim_tree_quit_on_open = 0
-  g.nvim_tree_follow = 1
-  g.nvim_tree_indent_markers = 1
-  g.nvim_tree_hide_dotfiles = 1
-  g.nvim_tree_git_hl = 1
-  g.nvim_tree_root_folder_modifier = ":t"
-  g.nvim_tree_tab_open = 0
-  g.nvim_tree_allow_resize = 1
-  g.nvim_tree_lsp_diagnostics = 1
-  g.nvim_tree_auto_ignore_ft = { "startify", "dashboard" }
-
-  g.nvim_tree_show_icons = {
-    git = 1,
-    folders = 1,
-    files = 1,
-    folder_arrows = 1,
-  }
-
-  vim.g.nvim_tree_icons = {
-    default = "",
-    symlink = "",
-    git = {
-      unstaged = "",
-      staged = "S",
-      unmerged = "",
-      renamed = "➜",
-      deleted = "",
-      untracked = "U",
-      ignored = "◌",
-    },
-    folder = {
-      default = "",
-      open = "",
-      empty = "",
-      empty_open = "",
-      symlink = "",
-    },
-  }
   local tree_cb = nvim_tree_config.nvim_tree_callback
 
-  vim.g.nvim_tree_bindings = {
+  g.nvim_tree_bindings = {
     { key = { "l", "<CR>", "o" }, cb = tree_cb "edit" },
     { key = "h", cb = tree_cb "close_node" },
     { key = "v", cb = tree_cb "vsplit" },
   }
 end
-
+--
 local view_status_ok, view = pcall(require, "nvim-tree.view")
 if not view_status_ok then
   return
 end
+--
 M.toggle_tree = function()
   if view.win_open() then
     require("nvim-tree").close()