folke / lazydev.nvim

Faster LuaLS setup for Neovim

💻 lazydev.nvim

lazydev.nvim is a plugin that properly configures LuaLS for editing your Neovim config by lazily updating your workspace libraries.

✨ Features

• much faster auto-completion, since only the modules you require in open Neovim files will be loaded.
• no longer needed to configure what plugin sources you want to have enabled for a certain project
• load third-party addons from LLS-Addons
• will update your workspace libraries for:
  • require statements: require("nvim-treesitter")
  • module annotations: ---@module "nvim-treesitter"
• nvim-cmp and nvim_coq completion source for the above

⚠️ Limitations

• If you have files that only use types from a plugin, then those types won't be available in your workspace.
• completion for module names when typing require(...) will only return loaded modules in your workspace.
• To get around the above, you can:
  • pre-load those plugins with the library option.
  • use the nvim-cmp or coq_nvim completion source to get all available modules.
• Neovim types are NOT included and also no longer needed on Neovim >= 0.10

⚡️ Requirements

• Neovim >= 0.10.0
• lazy.nvim plugin manager
  • OR a plugin manager that uses Neovim's native package system

📦 Installation

With lazy.nvim:

return {
  {
    "folke/lazydev.nvim",
    ft = "lua", -- only load on lua files
    opts = {
      library = {
        -- See the configuration section for more details
        -- Load luvit types when the `vim.uv` word is found
        { path = "luvit-meta/library", words = { "vim%.uv" } },
      },
    },
  },
  { "Bilal2453/luvit-meta", lazy = true }, -- optional `vim.uv` typings
  { -- optional completion source for require statements and module annotations
    "hrsh7th/nvim-cmp",
    opts = function(_, opts)
      opts.sources = opts.sources or {}
      table.insert(opts.sources, {
        name = "lazydev",
        group_index = 0, -- set group index to 0 to skip loading LuaLS completions
      })
    end,
  },
  -- { "folke/neodev.nvim", enabled = false }, -- make sure to uninstall or disable neodev.nvim
}

⚙️ Configuration

Tip

You can force enable/disable lazydev in certain project folders using :h 'exrc' with vim.g.lazydev_enabled = true or vim.g.lazydev_enabled = false

Examples:

{
  "folke/lazydev.nvim",
  ft = "lua", -- only load on lua files
  opts = {
    library = {
      -- Library paths can be absolute
      "~/projects/my-awesome-lib",
      -- Or relative, which means they will be resolved from the plugin dir.
      "lazy.nvim",
      "luvit-meta/library",
      -- It can also be a table with trigger words / mods
      -- Only load luvit types when the `vim.uv` word is found
      { path = "luvit-meta/library", words = { "vim%.uv" } },
      -- always load the LazyVim library
      "LazyVim",
      -- Only load the lazyvim library when the `LazyVim` global is found
      { path = "LazyVim", words = { "LazyVim" } },
      -- Load the wezterm types when the `wezterm` module is required
      -- Needs `justinsgithub/wezterm-types` to be installed
      { path = "wezterm-types", mods = { "wezterm" } },
    },
    -- always enable unless `vim.g.lazydev_enabled = false`
    -- This is the default
    enabled = function(root_dir)
      return vim.g.lazydev_enabled == nil and true or vim.g.lazydev_enabled
    end,
    -- disable when a .luarc.json file is found
    enabled = function(root_dir)
      return not vim.uv.fs_stat(root_dir .. "/.luarc.json")
    end,
  },
},

Default settings:

---@alias lazydev.Library {path:string, words:string[], mods:string[]}
---@alias lazydev.Library.spec string|{path:string, words?:string[], mods?:string[]}
---@class lazydev.Config
local defaults = {
  runtime = vim.env.VIMRUNTIME --[[@as string]],
  library = {}, ---@type lazydev.Library.spec[]
  integrations = {
    -- Fixes lspconfig's workspace management for LuaLS
    -- Only create a new workspace if the buffer is not part
    -- of an existing workspace or one of its libraries
    lspconfig = true,
    -- add the cmp source for completion of:
    -- `require "modname"`
    -- `---@module "modname"`
    cmp = true,
    -- same, but for Coq
    coq = false,
  },
  ---@type boolean|(fun(root:string):boolean?)
  enabled = function(root_dir)
      return vim.g.lazydev_enabled == nil and true or vim.g.lazydev_enabled
  end,
}

🚀 Usage

Just install the plugin and start editing your Lua files.

If you don't use nvim-lspconfig, then you can use require('lazydev').find_workspace(buf?) to check if the buffer is part of an existing workspace or its libraries.

The :LazyDev command:

• :LazyDev or :LazyDev debug will show a notification with the lazydev settings for the current buffer.
• :LazyDev lsp: will show a notification with the settings for any attached LSP servers. Not limited to LuaLS.