Initial work on massive refactor

.config/nvim/lua/plugins/misc/ufo.lua

@@ -0,0 +1,35 @@
+local M = { "nvim-treesitter/nvim-treesitter" }
+
+M.event = { "InsertEnter" }
+
+M.dependencies = { "kevinhwang91/promise-async" }
+
+M.opts = {
+    preview = {
+        mappings = {
+            scrollB = "<C-b>",
+            scrollF = "<C-f>",
+            scrollU = "<C-u>",
+            scrollD = "<C-d>",
+        },
+    },
+    provider_selector = function(_, filetype, buftype)
+        local function handleFallbackException(bufnr, err, providerName)
+            if type(err) == "string" and err:match "UfoFallbackException" then
+                return require("ufo").getFolds(bufnr, providerName)
+            else
+                return require("promise").reject(err)
+            end
+        end
+
+        return (filetype == "" or buftype == "nofile") and "indent" -- only use indent until a file is opened
+            or function(bufnr)
+                return require("ufo")
+                    .getFolds(bufnr, "lsp")
+                    :catch(function(err) return handleFallbackException(bufnr, err, "treesitter") end)
+                    :catch(function(err) return handleFallbackException(bufnr, err, "indent") end)
+            end
+    end,
+}
+
+return M