Upload files to "config/nvim/lua/plugins"

config/nvim/lua/plugins/init.lua

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+require('plugins.treesitter')
+require('plugins.lsp')

config/nvim/lua/plugins/lsp.lua

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+lsp_zero = require('lsp-zero')
+
+lsp_zero.on_attach(function(client, bufnr)
+  -- see :help lsp-zero-keybindings
+  -- to learn the available actions
+    vim.keymap.set('n', 'gd', function() vim.lsp.buf.definition() end, opts)
+    vim.keymap.set('n', 'K', function() vim.lsp.buf.hover() end, opts)
+    vim.keymap.set('n', '<leader>vws', function() vim.lsp.buf.workspace_symbol() end, opts)
+    vim.keymap.set('n', '<leader>vd', function() vim.diagnostic.open_float() end, opts)
+    vim.keymap.set('n', '[d', function() vim.diagnostic.goto_next() end, opts)
+    vim.keymap.set('n', ']d', function() vim.diagnostic.goto_prev() end, opts)
+    vim.keymap.set('n', '<leader>vca', function() vim.lsp.buf.code_action() end, opts)
+    vim.keymap.set('n', '<leader>vrr', function() vim.lsp.buf.references() end, opts)
+    vim.keymap.set('n', '<leader>vrn', function() vim.lsp.buf.rename() end, opts)
+    vim.keymap.set('i', '<C-h>', function() vim.lsp.buf.signature_help() end, opts)
+  lsp_zero.default_keymaps({buffer = bufnr})
+end)
+
+-- to learn how to use mason.nvim
+-- read this: https://github.com/VonHeikemen/lsp-zero.nvim/blob/v3.x/doc/md/guides/integrate-with-mason-nvim.md
+require('mason').setup({})
+require('mason-lspconfig').setup({
+  ensure_installed = {'tsserver','dockerls','lua_ls','terraformls','pyright','gopls'},
+  handlers = {
+    function(server_name)
+      require('lspconfig')[server_name].setup({})
+    end,
+  },
+})
+require'lspconfig'.gopls.setup{}
+
+local cmp = require('cmp')
+
+cmp.setup({
+  sources = {
+    {name = 'nvim_lsp'},
+  },
+  mapping = {
+    ['<C-e>'] = cmp.mapping.confirm({select = false}),
+    ['<C-q>'] = cmp.mapping.abort(),
+    ['<Up>'] = cmp.mapping.select_prev_item({behavior = 'select'}),
+    ['<Down>'] = cmp.mapping.select_next_item({behavior = 'select'}),
+    ['<C-p>'] = cmp.mapping(function()
+      if cmp.visible() then
+        cmp.select_prev_item({behavior = 'insert'})
+      else
+        cmp.complete()
+      end
+    end),
+    ['<C-n>'] = cmp.mapping(function()
+      if cmp.visible() then
+        cmp.select_next_item({behavior = 'insert'})
+      else
+        cmp.complete()
+      end
+    end),
+  },
+  snippet = {
+    expand = function(args)
+      require('luasnip').lsp_expand(args.body)
+    end,
+  },
+})

config/nvim/lua/plugins/treesitter.lua

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+require'nvim-treesitter.configs'.setup {
+  -- A list of parser names, or "all" (the listed parsers MUST always be installed)
+  ensure_installed = { "c", "lua", "vim", "vimdoc", "query", "markdown", "markdown_inline" },
+
+  -- Install parsers synchronously (only applied to `ensure_installed`)
+  sync_install = false,
+
+  -- Automatically install missing parsers when entering buffer
+  -- Recommendation: set to false if you don't have `tree-sitter` CLI installed locally
+  auto_install = true,
+
+  -- List of parsers to ignore installing (or "all")
+  ignore_install = { "javascript" },
+
+  ---- If you need to change the installation directory of the parsers (see -> Advanced Setup)
+  -- parser_install_dir = "/some/path/to/store/parsers", -- Remember to run vim.opt.runtimepath:append("/some/path/to/store/parsers")!
+
+  highlight = {
+    enable = true,
+
+    -- NOTE: these are the names of the parsers and not the filetype. (for example if you want to
+    -- disable highlighting for the `tex` filetype, you need to include `latex` in this list as this is
+    -- the name of the parser)
+    -- list of language that will be disabled
+    disable = { "c", "rust" },
+    -- Or use a function for more flexibility, e.g. to disable slow treesitter highlight for large files
+    disable = function(lang, buf)
+        local max_filesize = 100 * 1024 -- 100 KB
+        local ok, stats = pcall(vim.loop.fs_stat, vim.api.nvim_buf_get_name(buf))
+        if ok and stats and stats.size > max_filesize then
+            return true
+        end
+    end,
+
+    -- Setting this to true will run `:h syntax` and tree-sitter at the same time.
+    -- Set this to `true` if you depend on 'syntax' being enabled (like for indentation).
+    -- Using this option may slow down your editor, and you may see some duplicate highlights.
+    -- Instead of true it can also be a list of languages
+    additional_vim_regex_highlighting = false,
+  },
+}