refactor(#2941): move lib methods to explorer (#2964)

* add todo

* refactor(#2886): multi instance: node class refactoring: extract links, *_git_status (#2944)

* extract DirectoryLinkNode and FileLinkNode, move Node methods to children

* temporarily move DirectoryNode methods into BaseNode for easier reviewing

* move mostly unchanged DirectoryNode methods back to BaseNode

* tidy

* git.git_status_file takes an array

* update git status of links

* luacheck hack

* safer git_status_dir

* refactor(#2886): multi instance: node class refactoring: DirectoryNode:expand_or_collapse (#2957)

move expand_or_collapse to DirectoryNode

* refactor(#2886): multi instance: node group functions refactoring (#2959)

* move last_group_node to DirectoryNode

* move add BaseNode:as and more doc

* revert parameter name changes

* revert parameter name changes

* add Class

* move group methods into DN

* tidy group methods

* tidy group methods

* tidy group methods

* tidy group methods

* parent is DirectoryNode

* tidy expand all

* BaseNode -> Node

* move watcher to DirectoryNode

* last_group_node is DirectoryNode only

* simplify create-file

* simplify parent

* simplify collapse-all

* simplify live-filter

* style

* move lib.get_cursor_position to Explorer

* move lib.get_node_at_cursor to Explorer

* move lib.get_nodes to Explorer

* move place_cursor_on_node to Explorer

* resolve resource leak in purge_all_state

* move many autocommands into Explorer

* post merge tidy

lua/nvim-tree/api.lua

@@ -1,4 +1,3 @@
-local lib = require("nvim-tree.lib")
 local core = require("nvim-tree.core")
 local view = require("nvim-tree.view")
 local utils = require("nvim-tree.utils")
@@ -41,7 +40,7 @@ local Api = {
   diagnostics = {},
 }
 
---- Print error when setup not called.
+---Print error when setup not called.
 ---@param fn fun(...): any
 ---@return fun(...): any
 local function wrap(fn)
@@ -54,28 +53,6 @@ local function wrap(fn)
   end
 end
 
----Inject the node as the first argument if present otherwise do nothing.
----@param fn fun(node: Node, ...): any
----@return fun(node: Node, ...): any
-local function wrap_node(fn)
-  return function(node, ...)
-    node = node or lib.get_node_at_cursor()
-    if node then
-      return fn(node, ...)
-    end
-  end
-end
-
----Inject the node or nil as the first argument if absent.
----@param fn fun(node: Node, ...): any
----@return fun(node: Node, ...): any
-local function wrap_node_or_nil(fn)
-  return function(node, ...)
-    node = node or lib.get_node_at_cursor()
-    return fn(node, ...)
-  end
-end
-
 ---Invoke a method on the singleton explorer.
 ---Print error when setup not called.
 ---@param explorer_method string explorer method name
@@ -89,6 +66,28 @@ local function wrap_explorer(explorer_method)
   end)
 end
 
+---Inject the node as the first argument if present otherwise do nothing.
+---@param fn fun(node: Node, ...): any
+---@return fun(node: Node, ...): any
+local function wrap_node(fn)
+  return function(node, ...)
+    node = node or wrap_explorer("get_node_at_cursor")()
+    if node then
+      return fn(node, ...)
+    end
+  end
+end
+
+---Inject the node or nil as the first argument if absent.
+---@param fn fun(node: Node, ...): any
+---@return fun(node: Node, ...): any
+local function wrap_node_or_nil(fn)
+  return function(node, ...)
+    node = node or wrap_explorer("get_node_at_cursor")()
+    return fn(node, ...)
+  end
+end
+
 ---Invoke a member's method on the singleton explorer.
 ---Print error when setup not called.
 ---@param explorer_member string explorer member name
@@ -147,8 +146,8 @@ Api.tree.change_root_to_node = wrap_node(function(node)
 end)
 
 Api.tree.change_root_to_parent = wrap_node(actions.root.dir_up.fn)
-Api.tree.get_node_under_cursor = wrap(lib.get_node_at_cursor)
-Api.tree.get_nodes = wrap(lib.get_nodes)
+Api.tree.get_node_under_cursor = wrap_explorer("get_node_at_cursor")
+Api.tree.get_nodes = wrap_explorer("get_nodes")
 
 ---@class ApiTreeFindFileOpts
 ---@field buf string|number|nil