Neovim: LSP Configuration

brew install lua-language-server

vim.lsp.config['luals'] = {
  -- Command and arguments to start the server.
  cmd = { 'lua-language-server' },
  -- Filetypes to automatically attach to.
  filetypes = { 'lua' },
  -- Sets the "root directory" to the parent directory of the file in the
  -- current buffer that contains either a ".luarc.json" or a
  -- ".luarc.jsonc" file. Files that share a root directory will reuse
  -- the connection to the same LSP server.
  -- Nested lists indicate equal priority, see |vim.lsp.Config|.
  root_markers = { '.luarc.json', '.luarc.jsonc', '.git' },
  -- Specific settings to send to the server. The schema for this is
  -- defined by the server. For example the schema for lua-language-server
  -- can be found here https://raw.githubusercontent.com/LuaLS/vscode-lua/master/setting/schema.json
  settings = {
    Lua = {
      runtime = {
        version = 'LuaJIT',
      },
      ["diagnostics.globals"] = { "vim" }
    }
  }
}

return {
  -- Command and arguments to start the server.
  cmd = { 'lua-language-server' },
  -- Filetypes to automatically attach to.
  filetypes = { 'lua' },
  -- Sets the "root directory" to the parent directory of the file in the
  -- current buffer that contains either a ".luarc.json" or a
  -- ".luarc.jsonc" file. Files that share a root directory will reuse
  -- the connection to the same LSP server.
  -- Nested lists indicate equal priority, see |vim.lsp.Config|.
  root_markers = { '.luarc.json', '.luarc.jsonc', '.git' },
  -- Specific settings to send to the server. The schema for this is
  -- defined by the server. For example the schema for lua-language-server
  -- can be found here https://raw.githubusercontent.com/LuaLS/vscode-lua/master/setting/schema.json
  settings = {
    Lua = {
      runtime = {
        version = 'LuaJIT',
      },
      ["diagnostics.globals"] = { "vim" }
    }
  }
}

vim.lsp.enable('luals')

:checkhealth vim.lsp

vim.api.nvim_create_autocmd('LspAttach', {
  callback = function(ev)
    local client = vim.lsp.get_client_by_id(ev.data.client_id)
    if client:supports_method('textDocument/completion') then
      vim.opt.completeopt = { 'menu', 'menuone', 'noinsert', 'fuzzy', 'popup' }
      vim.lsp.completion.enable(true, client.id, ev.buf, { autotrigger = true })
      vim.keymap.set('i', '<C-Space>', function()
        vim.lsp.completion.get()
      end)
    end
  end,
})

vim.diagnostic.config({
  -- Use the default configuration
  -- virtual_lines = true

  -- Alternatively, customize specific options
  virtual_lines = {
    -- Only show virtual line diagnostics for the current cursor line
    current_line = true,
  },
})