nvim: safe guard nvim-tree

Author: jtheoof

.config/nvim/init.lua

@@ -2,6 +2,29 @@
 vim.g.loaded_netrw = 1
 vim.g.loaded_netrwPlugin = 1
 
+-- @USAGE:
+-- local foo = safe_require('foo')
+-- if not foo then return end
+_G.safe_require = function(module_name)
+	local package_exists, module = pcall(require, module_name)
+	if not package_exists then
+		vim.defer_fn(function()
+			vim.schedule(function()
+				vim.notify('Could not load module: ' .. module_name, 'error', { title = 'Module Not Found' })
+			end)
+		end, 1000)
+		return nil
+	else
+		return module
+	end
+end
+
+-- @USAGE: :lua safe_reload('foo')
+function _G.safe_reload(module)
+	package.loaded[module] = nil
+	return safe_require(module)
+end
+
 require("user/plugins")
 require("user/options")
 require("user/reload")

.config/nvim/lua/user/nvim-tree.lua

@@ -1,7 +1,8 @@
-local nvim_tree = require("nvim-tree")
-local nvim_tree_config = require("nvim-tree.config")
+local nvim_tree = _G.safe_require("nvim-tree")
 
-local tree_cb = nvim_tree_config.nvim_tree_callback
+if (nvim_tree == nil) then
+    return
+end
 
 nvim_tree.setup({
   disable_netrw = true,