starter/lua/plugins/lsp.lua

local on_attach = function(client, bufnr)
  local opts = { noremap = true, silent = true, buffer = bufnr }

  vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, opts)
  vim.keymap.set('n', 'gd', vim.lsp.buf.definition, opts)
  vim.keymap.set('n', 'K', vim.lsp.buf.hover, opts)
  vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, opts)
  vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, opts)
  vim.keymap.set('n', '<leader>wa', vim.lsp.buf.add_workspace_folder, opts)
  vim.keymap.set('n', '<leader>wr', vim.lsp.buf.remove_workspace_folder, opts)
  vim.keymap.set('n', '<leader>wl', function()
    print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
  end, opts)
  vim.keymap.set('n', '<leader>D', vim.lsp.buf.type_definition, opts)
  vim.keymap.set('n', '<leader>rn', vim.lsp.buf.rename, opts)
  vim.keymap.set('n', '<leader>ca', vim.lsp.buf.code_action, opts)
  vim.keymap.set('n', '<leader>li', vim.lsp.buf.implementation, opts)
  vim.keymap.set('n', '<leader>ld', vim.lsp.buf.definition, opts)
  vim.keymap.set('n', '<leader>lt', vim.lsp.buf.type_definition, opts)
  vim.keymap.set('n', 'gr', vim.lsp.buf.references, opts)
  vim.keymap.set('n', '<leader>f', function()
    vim.lsp.buf.format { async = true }
  end, opts)
end

local config = function(_, opts)
  local lspconfig = require('lspconfig')
  for server, config in pairs(opts.servers) do
    -- passing config.capabilities to blink.cmp merges with the capabilities in your
    -- `opts[server].capabilities, if you've defined it
    config.capabilities = require('blink.cmp').get_lsp_capabilities(config.capabilities)
    lspconfig[server].setup(config)
  end
end


return {
  {
    "neovim/nvim-lspconfig",
    dependencies = {
      -- "hrsh7th/cmp-nvim-lsp",
      'saghen/blink.cmp',
      {
        "williamboman/mason.nvim",
        build = ":MasonUpdate",
        config = true,
      },
      {
        "williamboman/mason-lspconfig.nvim",
        dependencies = { "neovim/nvim-lspconfig" },
        config = function()
          require("mason-lspconfig").setup {
            ensure_installed = {
              "ruby_lsp",
              "ts_ls",
              "html",
              "cssls",
              "lua_ls",
            },
            automatic_installation = true,
          }
        end,
      }
    },
    opts = {
      servers = {
        ruby_lsp = { on_attach = on_attach },
        ts_ls = { on_attach = on_attach },
        html = { on_attach = on_attach },
        cssls = { on_attach = on_attach },
        lua_ls = { on_attach = on_attach },
      }
    },
    config = config,
  }
}