nvim/lua/init-lsp.lua

vim.cmd [[
  sign define LspDiagnosticsSignError text= texthl= linehl= numhl=LspDiagnosticsLineNrError
  sign define LspDiagnosticsSignWarning text= texthl= linehl= numhl=LspDiagnosticsLineNrWarning
  sign define LspDiagnosticsSignInfo text= texthl= linehl= numhl=LspDiagnosticsLineNrInformation
  sign define LspDiagnosticsSignHint text= texthl= linehl= numhl=LspDiagnosticsLineNrHint
]]
--
-- lspconfig
local nvim_lsp = require('lspconfig')

-- Use a loop to conveniently call 'setup' on multiple servers and
-- map buffer local keybindings when the language server attaches
local servers = {
    -- npm i -g bash-language-server
    -- no formatting support
    'bashls', -- npm i -g vscode-langservers-extracted
    -- no formatting support
    'cssls', -- npm install -g intelephense
    -- suports formatting
    'intelephense',

    --   https://phpactor.readthedocs.io/en/master/usage/standalone.html
    'phpactor', -- npm install -g pyright
    -- static type checker
    'pyright', -- https://github.com/neovim/nvim-lspconfig/wiki
    -- 'tailwindcss',
    -- npm install -g  typescript typescript-language-server
    -- supports formatting
    'tsserver', -- npm install -g vim-language-server
    -- no formatting support
    'vimls', -- vue
    -- use vetur
    'yamlls'
    -- no formatting support
}

-- Use an on_attach function to only map the following keys
-- after the language server attaches to the current buffer
local on_attach = function(client, bufnr)
    local function buf_set_keymap(...)
        vim.api.nvim_buf_set_keymap(bufnr, ...)
    end
    local function buf_set_option(...)
        vim.api.nvim_buf_set_option(bufnr, ...)
    end

    -- Enable completion triggered by <c-x><c-o>
    buf_set_option('omnifunc', 'v:lua.vim.lsp.omnifunc')
    -- Mappings.
    local opts = {noremap = true, silent = true}
    -- See `:help vim.lsp.*` for documentation on any of the below functions
    buf_set_keymap('n', '[d',
                   '<cmd>lua vim.diagnostic.goto_prev({float = {...}})<CR>',
                   opts)
    buf_set_keymap('n', ']d',
                   '<cmd>lua vim.diagnostic.goto_next({float = {...}})<CR>',
                   opts)
    buf_set_keymap('n', 'gd', '<cmd>lua vim.lsp.buf.definition()<CR>', opts)
    buf_set_keymap('n', 'gD', '<cmd>lua vim.lsp.buf.declaration()<CR>', opts)
    buf_set_keymap('n', 'gi', '<cmd>lua vim.lsp.buf.implementation()<CR>', opts)
    buf_set_keymap('n', 'gr', '<cmd>lua vim.lsp.buf.references()<CR>', opts)
    buf_set_keymap('n', 'gl',
                   '<cmd>lua vim.diagnostic.open_float(buffer, {{opts}, scope="line"})<CR>',
                   opts)
    buf_set_keymap('n', 'gh', '<cmd>lua vim.lsp.buf.hover()<CR>', opts)
    buf_set_keymap('n', '<C-k>', '<cmd>lua vim.lsp.buf.signature_help()<CR>',
                   opts)
    buf_set_keymap('n', '<space>T',
                   '<cmd>lua vim.lsp.buf.type_definition()<CR>', opts)
    buf_set_keymap('n', '<space>l', '<cmd>lua vim.diagnostic.setloclist()<CR>',
                   opts)
    buf_set_keymap('n', '<space>q', '<cmd>lua vim.diagnostic.setqflist()<CR>',
                   opts)
    buf_set_keymap('n', '<space>ca', '<cmd>lua vim.lsp.buf.code_action()<CR>',
                   opts)
    buf_set_keymap('n', '<space>rn', '<cmd>lua vim.lsp.buf.rename()<CR>', opts)
    buf_set_keymap('n', '<space>f', '<cmd>lua vim.lsp.buf.formatting()<CR>',
                   opts)
    -- buf_set_keymap('n', '<space>wa', '<cmd>lua vim.lsp.buf.add_workspace_folder()<CR>', opts)
    -- buf_set_keymap('n', '<space>wr', '<cmd>lua vim.lsp.buf.remove_workspace_folder()<CR>', opts)
    -- buf_set_keymap('n', '<space>wl', '<cmd>lua print(vim.inspect(vim.lsp.buf.list_workspace_folders()))<CR>', opts)

    if client.name == 'phpactor' then
        client.resolved_capabilities.find_references = false;
    end

    if client.name == 'tsserver' or client.name == 'intelephense' then
        client.resolved_capabilities.document_formatting = false;
        print(vim.inspect(client.resolved_capabilities));
    end

    if client.resolved_capabilities.document_formatting then
        vim.cmd [[augroup lsp_formatting]]
        vim.cmd [[autocmd!]]
        vim.cmd [[autocmd BufWritePre <buffer> :lua vim.lsp.buf.formatting_seq_sync({}, 3000)]]
        vim.cmd [[augroup END]]
    end

    if client.resolved_capabilities.document_highlight then
        vim.cmd [[
      augroup lsp_document_highlight
        autocmd! * <buffer>
        autocmd CursorHold <buffer> lua vim.lsp.buf.document_highlight()
        autocmd CursorMoved <buffer> lua vim.lsp.buf.clear_references()
      augroup END
    ]]
    end
end

local capabilities = vim.lsp.protocol.make_client_capabilities()
capabilities = require('cmp_nvim_lsp').update_capabilities(capabilities)
capabilities.textDocument.completion.completionItem.snippetSupport = true

for _, lsp in ipairs(servers) do
    nvim_lsp[lsp].setup {
        on_attach = on_attach,
        capabilities = capabilities,
        flags = {debounce_text_changes = 150}
    }
end

local runtime_path = vim.split(package.path, ';')
table.insert(runtime_path, "lua/?.lua")
table.insert(runtime_path, "lua/?/init.lua")

require'lspconfig'.sumneko_lua.setup {
    settings = {
        Lua = {
            runtime = {
                -- Tell the language server which version of Lua you're using (most likely LuaJIT in the case of Neovim)
                version = 'LuaJIT',
                -- Setup your lua path
                path = runtime_path
            },
            diagnostics = {
                -- Get the language server to recognize the `vim` global
                globals = {'vim'}
            },
            workspace = {
                -- Make the server aware of Neovim runtime files
                library = vim.api.nvim_get_runtime_file("", true)
            },
            -- Do not send telemetry data containing a randomized but unique identifier
            telemetry = {enable = false}
        }
    }
}

-- null-ls
local null_ls = require("null-ls")

local sources = {
    null_ls.builtins.formatting.prettierd, -- phpcs - standards wordpress
    -- in project directory must
    --  composer require friendsofphp/php-cs-fixer
    --  as in https://github.com/FriendsOfPHP/PHP-CS-Fixer
    --  I think os anyway - not totally sure any more
    null_ls.builtins.diagnostics.phpcs.with({
        condition = function(utils)
            return utils.root_has_file({"vendor/bin/phpcs"})
        end,
        command = "vendor/bin/phpcs",
        args = {"--standard=WordPress", "--report=json", "-s", "-"}
    }), -- phpcbf - standards wordpress
    null_ls.builtins.formatting.phpcbf.with({
        condition = function(utils)
            return utils.root_has_file({"vendor/bin/phpcbf"})
        end,
        command = "vendor/bin/phpcbf",
        args = {"--standard=WordPress", "-"}
    }), -- phpcs
    null_ls.builtins.diagnostics.phpcs.with({
        condition = function(utils)
            return not utils.root_has_file({"vendor/bin/phpcs"})
        end,
        args = {"--standard=PSR12", "--report=json", "-s", "-"}
    }), -- phpcbf
    null_ls.builtins.formatting.phpcbf.with({
        condition = function(utils)
            return not utils.root_has_file({"vendor/bin/phpcbf"})
        end,
        args = {"--standard=PSR12", "--report=json", "-s", "-"}
    }), -- black
    null_ls.builtins.formatting.black, -- shellcheck,
    null_ls.builtins.diagnostics.shellcheck, -- flake8
    null_ls.builtins.diagnostics.flake8, -- luaFormatter
    null_ls.builtins.formatting.lua_format
}

null_ls.setup({sources = sources, on_attach = on_attach})