Create fold.lua

lua/custom/plugins/fold.lua

@@ -0,0 +1,32 @@
+return {
+    "kevinhwang91/nvim-ufo",
+    event = { "User AstroFile", "InsertEnter" },
+    dependencies = { "kevinhwang91/promise-async" },
+    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,
+    },
+  }