dotfiles/nvim/.config/nvim/lua/plugins/neotree.lua

local config = {
  close_if_last_window = false, -- Close Neo-tree if it is the last window left in the tab
  popup_border_style = "rounded",
  enable_git_status = true,
  enable_diagnostics = true,
  sources = {
    "filesystem",
		"buffers",
		"git_status",
		"document_symbols",
	},
  source_selector = {
    winbar = false,
    statusline = false,
  },
  default_component_configs = {
    container = {
      enable_character_fade = true
    },
    indent = {
      indent_size = 2,
      padding = 1, -- extra padding on left hand side
      -- indent guides
      with_markers = true,
      indent_marker = "│",
      last_indent_marker = "└",
      highlight = "NeoTreeIndentMarker",
      -- expander config, needed for nesting files
      with_expanders = nil, -- if nil and file nesting is enabled, will enable expanders
      expander_collapsed = "",
      expander_expanded = "",
      expander_highlight = "NeoTreeExpander",
    },
    icon = {
      folder_closed = "",
      folder_open = "",
      folder_empty = "",
      -- The next two settings are only a fallback, if you use nvim-web-devicons and configure default icons there
      -- then these will never be used.
      default = "*",
      highlight = "NeoTreeFileIcon"
    },
    modified = {
      symbol = "[+]",
      highlight = "NeoTreeModified",
    },
    name = {
      trailing_slash = false,
      use_git_status_colors = true,
      highlight = "NeoTreeFileName",
    },
    git_status = {
      symbols = {
        -- Change type
        added     = "", -- or "✚", but this is redundant info if you use git_status_colors on the name
        modified  = "", -- or "", but this is redundant info if you use git_status_colors on the name
        deleted   = "✖",-- this can only be used in the git_status source
        renamed   = "󰁕",-- this can only be used in the git_status source
        -- Status type
        untracked = "",
        ignored   = "",
        unstaged  = "󰄱",
        staged    = "",
        conflict  = "",
      }
    },
  },
  window = {
    position = "left",
    width = 40,
    mapping_options = {
      noremap = true,
      nowait = true,
    },
    mappings = {
      ["<space>"] = { 
        "toggle_node", 
        nowait = false, -- disable `nowait` if you have existing combos starting with this char that you want to use 
      },
      ["<2-LeftMouse>"] = "open",
      ["<cr>"] = "open",
      ["S"] = "open_split",
      ["s"] = "open_vsplit",
      -- ["S"] = "split_with_window_picker",
      -- ["s"] = "vsplit_with_window_picker",
      ["t"] = "open_tabnew",
      ["w"] = "open_with_window_picker",
      ["P"] = {
        "toggle_preview",
        config = {
          use_float = true,
          use_image_nvim = true,
          -- title = 'Neo-tree Preview',
        },

      },
      ["C"] = "close_node",
      ["a"] = { 
        "add",
        -- some commands may take optional config options, see `:h neo-tree-mappings` for details
        config = {
          show_path = "relative" -- "none", "relative", "absolute"
        }
      },
      ["A"] = "add_directory", -- also accepts the config.show_path option.
      ["d"] = "delete",
      ["r"] = "rename",
      ["y"] = "copy_to_clipboard",
      ["x"] = "cut_to_clipboard",
      ["p"] = "paste_from_clipboard",
      ["c"] = "copy", -- takes text input for destination
      ["m"] = "move", -- takes text input for destination
      ["q"] = "close_window",
      ["R"] = "refresh",
      ["?"] = "show_help",
    }
  },
  nesting_rules = {
    ["js"] = {
        pattern = "(.+)%.js$",
        files = { "%1.js.map", "%1.min.js", "%1.d.ts" },
    },
    ["css"] = {
        pattern = "(.+)%.css$",
        files = { "%1.css.map", "%1.min.css" },
    },
    ["go"] = {
      pattern = "(.*)%.go$",
      files = { "%1_test.go" },
    },
    ["templ"] = {
      pattern = "(.*)%.templ$",
      files = { "%1_templ.go", "%1_templ.txt"  },
    },
  },
  filesystem = {
    filtered_items = {
      visible = false, -- when true, they will just be displayed differently than normal items
      hide_dotfiles = false,
      hide_gitignored = false,
      hide_hidden = true, -- only works on Windows for hidden files/directories
      hide_by_name = {
        ".git",
        ".jj",
      },
      hide_by_pattern = { -- uses glob style patterns
        --"*.meta"
      },
      never_show = { -- remains hidden even if visible is toggled to true
        --".DS_Store",
        --"thumbs.db"
      },
    },
    follow_current_file = { enabled = false }, -- This will find and focus the file in the active buffer every
    -- time the current file is changed while the tree is open.
    group_empty_dirs = false, -- when true, empty folders will be grouped together
    hijack_netrw_behavior = "open_default", -- netrw disabled, opening a directory opens neo-tree
    -- in whatever position is specified in window.position
    -- "open_current",  -- netrw disabled, opening a directory opens within the
    -- window like netrw would, regardless of window.position
    -- "disabled",    -- netrw left alone, neo-tree does not handle opening dirs
    use_libuv_file_watcher = true, -- This will use the OS level file watchers to detect changes
    -- instead of relying on nvim autocmd events.
    window = {
      mappings = {
        ["<bs>"] = "navigate_up",
        ["."] = "set_root",
        ["H"] = "toggle_hidden",
        ["/"] = "fuzzy_finder",
        ["f"] = "filter_on_submit",
        ["<c-x>"] = "clear_filter",
        ["[g"] = "prev_git_modified",
        ["]g"] = "next_git_modified",
      }
    }
  },
  buffers = {
    follow_current_file = { enabled = false }, -- This will find and focus the file in the active buffer every
    -- time the current file is changed while the tree is open.
    group_empty_dirs = true, -- when true, empty folders will be grouped together
    show_unloaded = true,
    window = {
      mappings = {
        ["bd"] = "buffer_delete",
        ["<bs>"] = "navigate_up",
        ["."] = "set_root",
      }
    },
  },
  git_status = {
    window = {
      position = "float",
      mappings = {
        ["A"]  = "git_add_all",
        ["gu"] = "git_unstage_file",
        ["ga"] = "git_add_file",
        ["gr"] = "git_revert_file",
        ["gc"] = "git_commit",
        ["gp"] = "git_push",
        ["gg"] = "git_commit_and_push",
      }
    }
  },
}

require("neo-tree").setup(config)

vim.keymap.set("n", "<leader>n", ":Neotree reveal<cr>")
vim.keymap.set("n", "<leader>nf", ":Neotree reveal<cr>")
vim.keymap.set("n", "<leader>nb", ":Neotree reveal buffers<cr>")
vim.keymap.set("n", "<leader>ng", ":Neotree reveal git_status<cr>")
vim.keymap.set("n", "<leader>no", ":Neotree reveal document_symbols<cr>")
vim.keymap.set("n", "<leader>nd", ":Neotree reveal diagnostics<cr>")