chore(master): release nvim-tree 1.19.0

* feat: restore buffers after loading a session

* feat(sessions): invalid json handling

* feat(sessions): switch to "persist in a file" strategy

* docs: no longer needs to toggle sessionoptions flag

---------

Co-authored-by: Alexander Courtis <alex@courtis.org>

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "1.17.0"
+  ".": "1.19.0"
 }

CHANGELOG.md

@@ -1,5 +1,32 @@
 # Changelog
 
+## [1.19.0](https://github.com/nvim-tree/nvim-tree.lua/compare/nvim-tree-v1.18.0...nvim-tree-v1.19.0) (2026-07-15)
+
+
+### Features
+
+* experiment: restore nvim-tree on session load, see https://github.com/nvim-tree/nvim-tree.lua/issues/3343 ([#3335](https://github.com/nvim-tree/nvim-tree.lua/issues/3335)) ([cf18a66](https://github.com/nvim-tree/nvim-tree.lua/commit/cf18a662cd5f200361b6fedfb794eed583e075e1))
+
+
+### Bug Fixes
+
+* **#3346:** api.tree.resize: 'configure_width' (a nil value) ([#3347](https://github.com/nvim-tree/nvim-tree.lua/issues/3347)) ([a797d5e](https://github.com/nvim-tree/nvim-tree.lua/commit/a797d5e20133fc031fba4aa7d1272f5b1d950a1c))
+
+## [1.18.0](https://github.com/nvim-tree/nvim-tree.lua/compare/nvim-tree-v1.17.0...nvim-tree-v1.18.0) (2026-07-01)
+
+
+### Features
+
+* **#1549:** p will paste files from another nvim-tree instance, gp will cut/paste ([#3336](https://github.com/nvim-tree/nvim-tree.lua/issues/3336)) ([c760c92](https://github.com/nvim-tree/nvim-tree.lua/commit/c760c92667fe5febf99e2a5bb8a543b0208c743b))
+
+
+### Bug Fixes
+
+* **#3312:** correct cursor when full name shown, requires nvim 0.12.2+ ([#3316](https://github.com/nvim-tree/nvim-tree.lua/issues/3316)) ([d277467](https://github.com/nvim-tree/nvim-tree.lua/commit/d277467fc0d1d0e2bca88165a1de6b526f9f6fe8))
+* **#3324:** deprecated BufModifiedSet event replaced by OptionSet event for Nvim 0.13+ ([#3325](https://github.com/nvim-tree/nvim-tree.lua/issues/3325)) ([f9bfc00](https://github.com/nvim-tree/nvim-tree.lua/commit/f9bfc0059eca24546b69a7006110463da4808f8f))
+* **#3327:** pass nvim_tree.api.node.open.Opts to all applicable nvim_tree.api.node.open function ([#3329](https://github.com/nvim-tree/nvim-tree.lua/issues/3329)) ([07f541f](https://github.com/nvim-tree/nvim-tree.lua/commit/07f541fcaa4a5ae019598240362449ab7e9812b3))
+* **full-name:** lower `zindex` to get consistent cursor shape ([d277467](https://github.com/nvim-tree/nvim-tree.lua/commit/d277467fc0d1d0e2bca88165a1de6b526f9f6fe8))
+
 ## [1.17.0](https://github.com/nvim-tree/nvim-tree.lua/compare/nvim-tree-v1.16.0...nvim-tree-v1.17.0) (2026-04-07)
 
 

README.md

@@ -15,7 +15,9 @@
 
    (Live) filtering
 
-   Cut, copy, paste, rename, delete, create
+   Rename, delete, create
+
+   Cut, copy, paste locally and between instances
 
    Highly customisable
 

doc/nvim-tree-lua.txt

@@ -20,7 +20,8 @@ Features
     - Git integration
     - Diagnostics integration: LSP and COC
     - (Live) filtering
-    - Cut, copy, paste, rename, delete, create
+    - Rename, delete, create
+    - Cut, copy, paste locally and between instances
     - Highly customisable
 
 File Icons
@@ -142,7 +143,7 @@ Show the mappings:  `g?`
  `F`               n    Live Filter: Clear         |nvim_tree.api.filter.live.clear()|
  `f`               n    Live Filter: Start         |nvim_tree.api.filter.live.start()|
  `g?`              n    Help                       |nvim_tree.api.tree.toggle_help()|
- `gy`              n    Copy Absolute Path         |nvim_tree.api.fs.copy.absolute_path()|
+ `gy`              nx   Copy Absolute Path         |nvim_tree.api.fs.copy.absolute_path()|
  `ge`              n    Copy Basename              |nvim_tree.api.fs.copy.basename()|
  `H`               n    Toggle Filter: Dotfiles    |nvim_tree.api.filter.dotfiles.toggle()|
  `I`               n    Toggle Filter: Git Ignored |nvim_tree.api.filter.git.ignored.toggle()|
@@ -154,6 +155,7 @@ Show the mappings:  `g?`
  `o`               n    Open                       |nvim_tree.api.node.open.edit()|
  `O`               n    Open: No Window Picker     |nvim_tree.api.node.open.no_window_picker()|
  `p`               n    Paste                      |nvim_tree.api.fs.paste()|
+ `gp`              n    Move                       |nvim_tree.api.fs.move()|
  `P`               n    Parent Directory           |nvim_tree.api.node.navigate.parent()|
  `q`               n    Close                      |nvim_tree.api.tree.close()|
  `r`               n    Rename                     |nvim_tree.api.fs.rename()|
@@ -435,7 +437,7 @@ You are encouraged to copy these to your {on_attach} function. >lua
   vim.keymap.set("n",          "F",              api.filter.live.clear,              opts("Live Filter: Clear"))
   vim.keymap.set("n",          "f",              api.filter.live.start,              opts("Live Filter: Start"))
   vim.keymap.set("n",          "g?",             api.tree.toggle_help,               opts("Help"))
-  vim.keymap.set("n",          "gy",             api.fs.copy.absolute_path,          opts("Copy Absolute Path"))
+  vim.keymap.set({ "n", "x" }, "gy",             api.fs.copy.absolute_path,          opts("Copy Absolute Path"))
   vim.keymap.set("n",          "ge",             api.fs.copy.basename,               opts("Copy Basename"))
   vim.keymap.set("n",          "H",              api.filter.dotfiles.toggle,         opts("Toggle Filter: Dotfiles"))
   vim.keymap.set("n",          "I",              api.filter.git.ignored.toggle,      opts("Toggle Filter: Git Ignored"))
@@ -447,6 +449,7 @@ You are encouraged to copy these to your {on_attach} function. >lua
   vim.keymap.set("n",          "o",              api.node.open.edit,                 opts("Open"))
   vim.keymap.set("n",          "O",              api.node.open.no_window_picker,     opts("Open: No Window Picker"))
   vim.keymap.set("n",          "p",              api.fs.paste,                       opts("Paste"))
+  vim.keymap.set("n",          "gp",             api.fs.move,                        opts("Move"))
   vim.keymap.set("n",          "P",              api.node.navigate.parent,           opts("Parent Directory"))
   vim.keymap.set("n",          "q",              api.tree.close,                     opts("Close"))
   vim.keymap.set("n",          "r",              api.fs.rename,                      opts("Rename"))
@@ -1908,6 +1911,11 @@ Config: experimental                           *nvim-tree-config-experimental*
     In the event of a problem please disable the experiment and raise an
     issue.
 
+    Fields: ~
+      • {session_restore_nvim}?  (`boolean`, default: `false`) Restore
+                                 nvim-tree buffers when restoring vim sessions
+                                 (requires 0.13+).
+
 ==============================================================================
 Config: log                                             *nvim-tree-config-log*
 
@@ -2213,6 +2221,7 @@ Following is the default configuration, see |nvim_tree.config| for details. >lua
         persist = false,
       },
       experimental = {
+        session_restore_nvim = false
       },
       log = {
         enable = false,
@@ -2459,8 +2468,20 @@ cut({node})                                           *nvim_tree.api.fs.cut()*
     Parameters: ~
       • {node}  (`nvim_tree.api.Node?`)
 
+move({node})                                         *nvim_tree.api.fs.move()*
+    Paste while cutting files from:
+    • current nvim-tree clipboard (if present)
+    • another nvim-tree instance via system clipboard
+
+    If {node} is a file it will pasted in the parent directory.
+
+    Parameters: ~
+      • {node}  (`nvim_tree.api.Node?`)
+
 paste({node})                                       *nvim_tree.api.fs.paste()*
-    Paste from the nvim-tree clipboard.
+    Paste files from:
+    • current nvim-tree clipboard (if present)
+    • another nvim-tree instance via system clipboard
 
     If {node} is a file it will pasted in the parent directory.
 

lua/nvim-tree/_meta/api/fs.lua

@@ -59,13 +59,25 @@ function nvim_tree.api.fs.create(node) end
 function nvim_tree.api.fs.cut(node) end
 
 ---
----Paste from the nvim-tree clipboard.
+---Paste files from:
+---- current nvim-tree clipboard (if present)
+---- another nvim-tree instance via system clipboard
 ---
 ---If {node} is a file it will pasted in the parent directory.
 ---
 ---@param node? nvim_tree.api.Node
 function nvim_tree.api.fs.paste(node) end
 
+---
+---Paste while cutting files from:
+---- current nvim-tree clipboard (if present)
+---- another nvim-tree instance via system clipboard
+---
+---If {node} is a file it will pasted in the parent directory.
+---
+---@param node? nvim_tree.api.Node
+function nvim_tree.api.fs.move(node) end
+
 ---
 ---Print the contents of the nvim-tree clipboard.
 ---

lua/nvim-tree/_meta/config/experimental.lua

@@ -9,6 +9,9 @@ error("Cannot require a meta file")
 ---
 ---@class nvim_tree.config.experimental
 ---
+---Restore nvim-tree buffers when restoring vim sessions (requires 0.13+).
+---(default: `false`)
+---@field session_restore_nvim? boolean
 --Example below for future reference:
 --
 --Buffers opened by nvim-tree will use with relative paths instead of absolute.

lua/nvim-tree/actions/fs/clipboard.lua

@@ -9,6 +9,7 @@ local find_file = require("nvim-tree.actions.finders.find-file").fn
 
 local Class = require("nvim-tree.classic")
 local DirectoryNode = require("nvim-tree.node.directory")
+local FileNode = require("nvim-tree.node.file")
 local Node = require("nvim-tree.node")
 
 ---@alias ClipboardAction "copy" | "cut"
@@ -176,28 +177,40 @@ function Clipboard:bulk_clipboard(nodes, from, to, verb)
   self.explorer.renderer:draw()
 end
 
+---@private
+---@param node_or_nodes Node|Node[]
+---@return boolean
+function Clipboard:is_nodes_array(node_or_nodes)
+  if type(node_or_nodes) == "table" and node_or_nodes.is and node_or_nodes:is(Node) then
+    return false
+  end
+  return true
+end
+
 ---Copy one or more nodes
 ---@param node_or_nodes Node|Node[]
 function Clipboard:copy(node_or_nodes)
-  if type(node_or_nodes) == "table" and node_or_nodes.is and node_or_nodes:is(Node) then
+  if self:is_nodes_array(node_or_nodes) == false then
     utils.array_remove(self.data.cut, node_or_nodes)
     toggle(node_or_nodes, self.data.copy)
     self.explorer.renderer:draw()
   else
     self:bulk_clipboard(utils.filter_descendant_nodes(node_or_nodes), self.data.cut, self.data.copy, "added to")
   end
+  self:copy_absolute_path(self.data.copy, { notify = false })
 end
 
 ---Cut one or more nodes
 ---@param node_or_nodes Node|Node[]
 function Clipboard:cut(node_or_nodes)
-  if type(node_or_nodes) == "table" and node_or_nodes.is and node_or_nodes:is(Node) then
+  if self:is_nodes_array(node_or_nodes) == false then
     utils.array_remove(self.data.copy, node_or_nodes)
     toggle(node_or_nodes, self.data.cut)
     self.explorer.renderer:draw()
   else
     self:bulk_clipboard(utils.filter_descendant_nodes(node_or_nodes), self.data.copy, self.data.cut, "cut to")
   end
+  self:copy_absolute_path(self.data.cut, { notify = false })
 end
 
 ---Clear clipboard for action and reload to reflect filesystem changes from paste.
@@ -304,6 +317,40 @@ function Clipboard:resolve_conflicts(conflict, destination, action, action_fn)
     end)
 end
 
+--- Transforms the copied absolute paths on register to node
+---@private
+function Clipboard:get_nodes_from_reg()
+  local content = vim.fn.getreg(self.reg)
+
+  if #content == 0 then
+    return {}
+  end
+
+  local nodes = {}
+  local absolute_paths = vim.split(content:sub(1, #content), "\n")
+
+  for _, absolute_path in ipairs(absolute_paths) do
+    if absolute_path:match("^%s*(.-)%s*s") then
+      local node_args = { absolute_path = absolute_path, name = vim.fn.fnamemodify(absolute_path, ":t"), explorer = self.explorer }
+      if absolute_path:sub(-1) == "/" then
+        node_args.name = vim.fn.fnamemodify(absolute_path:sub(1, -2), ":t")
+        table.insert(nodes, DirectoryNode(node_args))
+      else
+        table.insert(nodes, FileNode(node_args))
+      end
+    end
+  end
+  return nodes
+end
+
+---@param nodes Node[]
+---@private
+function Clipboard:destroy_nodes(nodes)
+  for _, n in ipairs(nodes) do
+    n:destroy()
+  end
+end
+
 ---Paste cut or copy with batch conflict resolution.
 ---@private
 ---@param node Node
@@ -318,7 +365,9 @@ function Clipboard:do_paste(node, action, action_fn)
       node = dir:last_group_node()
     end
   end
-  local clip = self.data[action]
+  local is_local = #self.data[action] > 0
+  local clip = is_local and self.data[action] or self:get_nodes_from_reg()
+
   if #clip == 0 then
     return
   end
@@ -328,6 +377,9 @@ function Clipboard:do_paste(node, action, action_fn)
   if not stats and err_name ~= "ENOENT" then
     log.line("copy_paste", "do_paste fs_stat '%s' failed '%s'", destination, err)
     notify.error("Could not " .. action .. " " .. notify.render_path(destination) .. " - " .. (err or "???"))
+    if is_local == false then
+      self:destroy_nodes(clip)
+    end
     return
   end
   local is_dir = stats and stats.type == "directory"
@@ -359,6 +411,10 @@ function Clipboard:do_paste(node, action, action_fn)
   else
     self:finish_paste(action)
   end
+
+  if is_local == false then
+    self:destroy_nodes(clip)
+  end
 end
 
 ---@param source string
@@ -386,10 +442,12 @@ end
 
 ---Paste cut (if present) or copy (if present)
 ---@param node Node
-function Clipboard:paste(node)
-  if self.data.cut[1] ~= nil then
+---@param opts? { cut?: boolean }
+function Clipboard:paste(node, opts)
+  opts = opts and opts or {}
+  if self.data.cut[1] ~= nil or opts.cut == true then
     self:do_paste(node, "cut", do_cut)
-  elseif self.data.copy[1] ~= nil then
+  else
     self:do_paste(node, "copy", do_copy)
   end
 end
@@ -413,17 +471,15 @@ function Clipboard:print_clipboard()
 end
 
 ---@param content string
-function Clipboard:copy_to_reg(content)
-  -- manually firing TextYankPost does not set vim.v.event
-  -- workaround: create a scratch buffer with the clipboard contents and send a yank command
-  local temp_buf = vim.api.nvim_create_buf(false, true)
-  vim.api.nvim_buf_set_text(temp_buf, 0, 0, 0, 0, { content })
-  vim.api.nvim_buf_call(temp_buf, function()
-    vim.cmd(string.format('normal! "%sy$', self.reg))
-  end)
-  vim.api.nvim_buf_delete(temp_buf, {})
+---@param message? string
+---@param opts? { notify?: boolean }
+function Clipboard:copy_to_reg(content, message, opts)
+  opts = opts and opts or {}
+  vim.fn.setreg(self.reg, type(content) == "table" and content or { content }, "v")
 
-  notify.info(string.format("Copied %s to %s clipboard!", content, self.clipboard_name))
+  if opts.notify ~= false then
+    notify.info(message or string.format("Copied %s to %s clipboard!", content, self.clipboard_name))
+  end
 end
 
 ---@param node Node
@@ -437,18 +493,20 @@ function Clipboard:copy_filename(node)
   end
 end
 
+---@private
 ---@param node Node
-function Clipboard:copy_basename(node)
+---@return string
+function Clipboard:get_absolute_path(node)
   if node.name == ".." then
-    -- root
-    self:copy_to_reg(vim.fn.fnamemodify(self.explorer.absolute_path, ":t:r"))
-  else
-    -- node
-    self:copy_to_reg(vim.fn.fnamemodify(node.name, ":r"))
+    node = self.explorer
   end
+
+  local absolute_path = node.absolute_path
+  return node.nodes ~= nil and utils.path_add_trailing(absolute_path) or absolute_path
 end
 
 ---@param node Node
+---@return string|nil
 function Clipboard:copy_path(node)
   if node.name == ".." then
     -- root
@@ -470,15 +528,44 @@ function Clipboard:copy_path(node)
   end
 end
 
----@param node Node
-function Clipboard:copy_absolute_path(node)
-  if node.name == ".." then
-    node = self.explorer
+---@param node_or_nodes Node|Node[]
+---@param opts? { notify?: boolean }
+function Clipboard:copy_absolute_path(node_or_nodes, opts)
+  opts = opts and opts or {}
+  local content
+
+  local is_single = self:is_nodes_array(node_or_nodes) == false
+  if is_single then
+    local node = #node_or_nodes == 1 and node_or_nodes[0] or node_or_nodes
+    content = self:get_absolute_path(node)
+  else
+    node_or_nodes = utils.filter_descendant_nodes(node_or_nodes)
+    content = {}
+    for _, node in ipairs(node_or_nodes) do
+      table.insert(content, self:get_absolute_path(node))
+    end
   end
 
-  local absolute_path = node.absolute_path
-  local content = node.nodes ~= nil and utils.path_add_trailing(absolute_path) or absolute_path
-  self:copy_to_reg(content)
+
+  if content ~= nil then
+    local message = nil
+
+    if not is_single then
+      message = string.format("%s %s copied to register", #content, #content > 1 and "absolute paths" or "absolute path")
+    end
+    self:copy_to_reg(content, message, opts)
+  end
+end
+
+---@param node Node
+function Clipboard:copy_basename(node)
+  if node.name == ".." then
+    -- root
+    self:copy_to_reg(vim.fn.fnamemodify(node.explorer.absolute_path, ":t:r"))
+  else
+    -- node
+    self:copy_to_reg(vim.fn.fnamemodify(node.name, ":r"))
+  end
 end
 
 ---Node is cut. Will not be copied.

lua/nvim-tree/actions/fs/create-file.lua

@@ -49,7 +49,7 @@ function M.fn(node)
   local containing_folder = utils.path_add_trailing(dir.absolute_path)
 
   local input_opts = {
-    prompt = "Create file ",
+    prompt = "Create ",
     default = containing_folder,
     completion = "file",
   }

lua/nvim-tree/actions/tree/resize.lua

@@ -1,4 +1,5 @@
 local view = require("nvim-tree.view")
+local view_state = require("nvim-tree.view-state")
 
 local M = {}
 
@@ -7,7 +8,7 @@ local M = {}
 function M.fn(opts)
   if opts == nil then
     -- reset to config values
-    view.configure_width()
+    view_state.configure_width()
     view.resize()
     return
   end
@@ -16,7 +17,7 @@ function M.fn(opts)
   local width_cfg = options.width
 
   if width_cfg ~= nil then
-    view.configure_width(width_cfg)
+    view_state.configure_width(width_cfg)
     view.resize()
     return
   end

lua/nvim-tree/api/impl.lua

@@ -155,14 +155,15 @@ function M.hydrate_post_setup(api)
   api.filter.toggle                            = e_(function(e) e.filters:toggle() end)
 
   api.fs.clear_clipboard                       = e_(function(e) e.clipboard:clear_clipboard() end)
-  api.fs.copy.absolute_path                    = en(function(e, n) e.clipboard:copy_absolute_path(n) end)
+  api.fs.copy.absolute_path                    = ev(function(e, n) e.clipboard:copy_absolute_path(n) end)
   api.fs.copy.basename                         = en(function(e, n) e.clipboard:copy_basename(n) end)
   api.fs.copy.filename                         = en(function(e, n) e.clipboard:copy_filename(n) end)
-  api.fs.copy.node                             = ev(function(e, n) e.clipboard:copy(n) end)
   api.fs.copy.relative_path                    = en(function(e, n) e.clipboard:copy_path(n) end)
+  api.fs.copy.node                             = ev(function(e, n) e.clipboard:copy(n) end)
   api.fs.create                                = _n(function(n) require("nvim-tree.actions.fs.create-file").fn(n) end)
   api.fs.cut                                   = ev(function(e, n) e.clipboard:cut(n) end)
   api.fs.paste                                 = en(function(e, n) e.clipboard:paste(n) end)
+  api.fs.move                                  = en(function(e, n) e.clipboard:paste(n, { cut = true }) end)
   api.fs.print_clipboard                       = e_(function(e) e.clipboard:print_clipboard() end)
   api.fs.remove                                = _v(function(n) require("nvim-tree.actions.fs.remove-file").fn(n) end)
   api.fs.rename                                = _n(function(n) require("nvim-tree.actions.fs.rename-file").rename_node(n) end)

lua/nvim-tree/autocmd.lua

@@ -17,6 +17,28 @@ function M.global()
     end,
   })
 
+  if vim.fn.has("nvim-0.13") == 1 and config.g.experimental.session_restore_nvim then
+    vim.api.nvim_create_autocmd("SessionWritePre", { ---@diagnostic disable-line: param-type-mismatch
+      group = augroup_id,
+      callback = function()
+        -- We must schedule to wait until `vim.v.this_session` is properly updated
+        -- This prevents overwriting the data if a new session is created with a new `:mksession`
+        vim.schedule(require("nvim-tree.session").save)
+      end,
+    })
+
+    vim.api.nvim_create_autocmd("SessionLoadPost", {
+      group = augroup_id,
+      -- Workaround: this event fires multiple times (report upstream),
+      -- failure notifications could show up many times.
+      once = true,
+      callback = function()
+        require("nvim-tree.session").restore()
+      end,
+    })
+  end
+
+
   if config.g.tab.sync.open then
     vim.api.nvim_create_autocmd("TabEnter", {
       group = augroup_id,

lua/nvim-tree/config.lua

@@ -297,6 +297,7 @@ M.d = { -- config-default-start
     persist = false,
   },
   experimental = {
+    session_restore_nvim = false
   },
   log = {
     enable = false,

lua/nvim-tree/keymap.lua

@@ -90,7 +90,7 @@ function M.on_attach_default(bufnr)
   vim.keymap.set("n",          "F",              api.filter.live.clear,              opts("Live Filter: Clear"))
   vim.keymap.set("n",          "f",              api.filter.live.start,              opts("Live Filter: Start"))
   vim.keymap.set("n",          "g?",             api.tree.toggle_help,               opts("Help"))
-  vim.keymap.set("n",          "gy",             api.fs.copy.absolute_path,          opts("Copy Absolute Path"))
+  vim.keymap.set({ "n", "x" }, "gy",             api.fs.copy.absolute_path,          opts("Copy Absolute Path"))
   vim.keymap.set("n",          "ge",             api.fs.copy.basename,               opts("Copy Basename"))
   vim.keymap.set("n",          "H",              api.filter.dotfiles.toggle,         opts("Toggle Filter: Dotfiles"))
   vim.keymap.set("n",          "I",              api.filter.git.ignored.toggle,      opts("Toggle Filter: Git Ignored"))
@@ -102,6 +102,7 @@ function M.on_attach_default(bufnr)
   vim.keymap.set("n",          "o",              api.node.open.edit,                 opts("Open"))
   vim.keymap.set("n",          "O",              api.node.open.no_window_picker,     opts("Open: No Window Picker"))
   vim.keymap.set("n",          "p",              api.fs.paste,                       opts("Paste"))
+  vim.keymap.set("n",          "gp",             api.fs.move,                        opts("Move"))
   vim.keymap.set("n",          "P",              api.node.navigate.parent,           opts("Parent Directory"))
   vim.keymap.set("n",          "q",              api.tree.close,                     opts("Close"))
   vim.keymap.set("n",          "r",              api.fs.rename,                      opts("Rename"))

lua/nvim-tree/session.lua

@@ -0,0 +1,103 @@
+local notify = require("nvim-tree.notify")
+
+local M = {}
+
+local storepath = vim.fn.stdpath("data") .. "/nvim-tree-session.json"
+
+local function decode_session_file()
+  local file = io.open(storepath, "r")
+
+  if file then
+    local content = file:read("*all")
+    file:close()
+    if content and content ~= "" then
+      return vim.json.decode(content)
+    end
+  end
+  -- Notifying on failure could be noisy, as it'd happen if the file simply did not exist
+end
+
+local function write_session_file(session_file_content)
+  local file, errmsg = io.open(storepath, "w")
+
+  if file then
+    file:write(vim.json.encode(session_file_content))
+    file:close()
+  else
+    notify.warn(string.format("Invalid session file (%s): %s", storepath, errmsg))
+  end
+end
+
+function M.save()
+  -- We either always save the session data, which ends up populating the storepath with empty data
+  -- Or we gate by the tree's visibility, which could create "out of sync" scenario:
+  -- if the tree is initially open and the session is saved, it won't be overridden later,
+  -- if the tree is no longer visible. However, when restoring, this is harmless.
+  if require("nvim-tree.api").tree.is_visible({ any_tabpage = true }) then
+    local ok, session_file_content = pcall(decode_session_file)
+
+    if not ok then
+      notify.warn(string.format("Failed to decode session file (%s): %s", storepath, session_file_content))
+      return
+    end
+
+    -- might be nil at this point
+    session_file_content = session_file_content or {}
+
+    local cwd = require("nvim-tree.core").get_cwd()
+
+    session_file_content[vim.v.this_session] = { cwd = cwd }
+
+    local ok2, err = pcall(write_session_file, session_file_content)
+
+    if not ok2 then
+      notify.warn(string.format("Failed to write session file (%s): %s", storepath, err))
+    end
+  end
+end
+
+function M.restore()
+  local api = require("nvim-tree.api").tree
+
+  ---@type table<integer,boolean>
+  local tabs = {}
+
+  local ok, session_file_content = pcall(decode_session_file)
+
+  -- Failing to restore cwd is not fatal, we can continue
+  if not ok then
+    notify.warn(string.format("Failed to decode session file (%s): %s", storepath, session_file_content))
+  end
+
+  local path = session_file_content and session_file_content[vim.v.this_session] and session_file_content[vim.v.this_session].cwd or nil
+
+  -- Save tabs with leftover nvim-tree buffers
+  for _, tab in ipairs(vim.api.nvim_list_tabpages()) do
+    for _, win in ipairs(vim.api.nvim_tabpage_list_wins(tab)) do
+      local buf = vim.api.nvim_win_get_buf(win)
+      if api.is_tree_buf(buf) then
+        tabs[tab] = true
+      end
+    end
+  end
+
+  -- The new window may inherit options from the current one if we don't schedule
+  vim.schedule(function()
+    api.close_in_all_tabs()
+
+    for tab, _ in pairs(tabs) do
+      if vim.api.nvim_tabpage_is_valid(tab) then
+        local win = vim.api.nvim_tabpage_get_win(tab)
+
+        -- Invoke `open` from each tab's current window to prevent having to switch tabs
+        if vim.api.nvim_win_is_valid(win) then
+          vim.api.nvim_win_call(win, function()
+            api.open({ path = path })
+          end)
+        end
+      end
+    end
+  end)
+end
+
+return M

lua/nvim-tree/view-state.lua

@@ -71,7 +71,7 @@ end
 
 ---Configure width-related config
 ---@param width string|function|number|table|nil
-local function configure_width(width)
+function M.configure_width(width)
   if type(width) == "table" then
     M.Active.adaptive_size = true
     M.Active.width = width.min or DEFAULT_MIN_WIDTH
@@ -101,7 +101,7 @@ function M.initialize()
   M.Active.winopts.relativenumber = config.g.view.relativenumber
   M.Active.winopts.signcolumn = config.g.view.signcolumn
 
-  configure_width(config.g.view.width)
+  M.configure_width(config.g.view.width)
 
   M.Active.initial_width = M.get_width()
 end

lua/nvim-tree/view.lua

@@ -298,7 +298,7 @@ function M.resize(size)
   local new_size = view_state.get_width()
 
   if new_size ~= vim.api.nvim_win_get_width(winnr) then
-    vim.api.nvim_win_set_width(winnr, new_size)
+    vim.api.nvim_win_set_width(winnr, new_size) ---@diagnostic disable-line: deprecated see #3344
     if not config.g.view.preserve_window_proportions then
       vim.cmd(":wincmd =")
     end