jones-nvim-config/lua/lsp.lua

local lspconfig = require("lspconfig")

local mappings = {
  ["<leader>k"] = vim.diagnostic.open_float,
  ["[d"] = vim.diagnostic.goto_prev,
  ["]d"] = vim.diagnostic.goto_next,
  ["<leader>q"] = vim.diagnostic.setloclist,
  ["gD"] = vim.lsp.buf.declaration,
  ["gd"] = vim.lsp.buf.definition,
  ["K"] = vim.lsp.buf.hover,
  ["gi"] = vim.lsp.buf.implementation,
  ["<leader>wa"] = vim.lsp.buf.add_workspace_folder,
  ["<leader>wr"] = vim.lsp.buf.remove_workspace_folder,
  ["<leader>wl"] = function()
    print(vim.inspect(vim.lsp.buf.list_workleader_folders()))
  end,
  ["<leader>D"] = vim.lsp.buf.type_definition,
  ["<leader>rn"] = vim.lsp.buf.rename,
  ["<leader>ca"] = vim.lsp.buf.code_action,
  ["gr"] = vim.lsp.buf.references,
}

local on_attach = function(client, bufnr)
  -- Enable completion triggered by <c-x><c-o>
  vim.api.nvim_buf_set_option(bufnr, "omnifunc", "v:lua.vim.lsp.omnifunc")
  local bufopts = { noremap = true, silent = true, buffer = bufnr }
  for key, mapping in pairs(mappings) do
    vim.keymap.set("n", key, mapping, bufopts)
  end
end

local servers = {
  "tsserver",
  "lua_ls",
}

local capabilities = vim.lsp.protocol.make_client_capabilities()

capabilities.textDocument.completion.completionItem = {
  documentationFormat = { "markdown", "plaintext" },
  snippetSupport = true,
  preselectSupport = true,
  insertReplaceSupport = true,
  labelDetailsSupport = true,
  deprecatedSupport = true,
  commitCharactersSupport = true,
  tagSupport = { valueSet = { 1 } },
  resolveSupport = {
    properties = {
      "documentation",
      "detail",
      "additionalTextEdits",
    },
  },
}

for _, lsp in ipairs(servers) do
  lspconfig[lsp].setup({
    on_attach = on_attach,
    capabilities = capabilities,
    -- For suppressing vim error messages in config
    settings = {
      Lua = {
        diagnostics = { globals = { "vim" } },
      },
    },
  })
end