symbols-outline.nvim

A tree like view for symbols in Neovim using the Language Server Protocol. Supports all your favourite languages.

Prerequisites

neovim 0.5+
Properly configured Neovim LSP client

Installation

Using vim-plug

Plug 'simrat39/symbols-outline.nvim'

Configuration

Define a global variable symbols_outline as follows:

Only add stuff that you want to override (even in nested tables), or skip this section entirely if you want to roll with the defaults.

-- init.lua
vim.g.symbols_outline = {
    highlight_hovered_item = true,
    show_guides = true,
    auto_preview = true,
    position = 'right',
    relative_width = true,
    width = 25,
    auto_close = false,
    show_numbers = false,
    show_relative_numbers = false,
    show_symbol_details = true,
    preview_bg_highlight = 'Pmenu',
    keymaps = { -- These keymaps can be a string or a table for multiple keys
        close = {"<Esc>", "q"},
        goto_location = "<Cr>",
        focus_location = "o",
        hover_symbol = "<C-space>",
        toggle_preview = "K",
        rename_symbol = "r",
        code_actions = "a",
    },
    lsp_blacklist = {},
    symbol_blacklist = {},
    symbols = {
        File = {icon = "", hl = "TSURI"},
        Module = {icon = "", hl = "TSNamespace"},
        Namespace = {icon = "", hl = "TSNamespace"},
        Package = {icon = "", hl = "TSNamespace"},
        Class = {icon = "𝓒", hl = "TSType"},
        Method = {icon = "ƒ", hl = "TSMethod"},
        Property = {icon = "", hl = "TSMethod"},
        Field = {icon = "", hl = "TSField"},
        Constructor = {icon = "", hl = "TSConstructor"},
        Enum = {icon = "ℰ", hl = "TSType"},
        Interface = {icon = "ﰮ", hl = "TSType"},
        Function = {icon = "", hl = "TSFunction"},
        Variable = {icon = "", hl = "TSConstant"},
        Constant = {icon = "", hl = "TSConstant"},
        String = {icon = "𝓐", hl = "TSString"},
        Number = {icon = "#", hl = "TSNumber"},
        Boolean = {icon = "⊨", hl = "TSBoolean"},
        Array = {icon = "", hl = "TSConstant"},
        Object = {icon = "⦿", hl = "TSType"},
        Key = {icon = "🔐", hl = "TSType"},
        Null = {icon = "NULL", hl = "TSType"},
        EnumMember = {icon = "", hl = "TSField"},
        Struct = {icon = "𝓢", hl = "TSType"},
        Event = {icon = "🗲", hl = "TSType"},
        Operator = {icon = "+", hl = "TSOperator"},
        TypeParameter = {icon = "𝙏", hl = "TSParameter"}
    }
}

Property	Description	Type	Default
highlight_hovered_item	Whether to highlight the currently hovered symbol (high cpu usage)	boolean	true
show_guides	Whether to show outline guides	boolean	true
position	Where to open the split window	'right' or 'left'	'right'
relative_width	Whether width of window is set relative to existing windows	boolean	true
width	Width of window (as a % or columns based on `relative_width`)	int	25
auto_close	Whether to automatically close the window after selection	boolean	false
auto_preview	Show a preview of the code on hover	boolean	true
show_numbers	Shows numbers with the outline	boolean	false
show_relative_numbers	Shows relative numbers with the outline	boolean	false
show_symbol_details	Shows extra details with the symbols (lsp dependent)	boolean	true
preview_bg_highlight	Background color of the preview window	string	Pmenu
keymaps	Which keys do what	table (dictionary)	here
symbols	Icon and highlight config for symbol icons	table (dictionary)	scroll up
lsp_blacklist	Which lsp clients to ignore	table (array)	{}
symbol_blacklist	Which symbols to ignore (possible values)	table (array)	{}

Commands

Command	Description
`:SymbolsOutline`	Toggle symbols outline
`:SymbolsOutlineOpen`	Open symbols outline
`:SymbolsOutlineClose`	Close symbols outline

Default keymaps

Key	Action
Escape	Close outline
Enter	Go to symbol location in code
o	Go to symbol location in code without losing focus
Ctrl+Space	Hover current symbol
K	Toggles the current symbol preview
r	Rename symbol
a	Code actions
?	Show help message

Highlights

Highlight	Purpose
FocusedSymbol	Highlight of the focused symbol
Pmenu	Highlight of the preview popup windows
SymbolsOutlineConnector	Highlight of the table connectors
Comment	Highlight of the info virtual text