nvim/lua/plugins/core.lua

local cmp = require("cmp")
local luasnip = require("luasnip")

return {
  {
    "folke/which-key.nvim",
    opts = {
      window = {
        border = "single",
      },
    },
  },
  {
    "LazyVim/LazyVim",
    opts = {
      colorscheme = "catppuccin",
    },
  },
  {
    "nvim-lualine/lualine.nvim",
    opts = {
      sections = {
        lualine_z = {},
      },
    },
  },
  {
    "nvim-neo-tree/neo-tree.nvim",
    opts = {
      window = {
        mappings = {
          ["l"] = "open", -- open folders and files with l
          -- ["h"] = "close",
        },
      },
      use_popups_for_input = false,
    },
  },
  {
    "hrsh7th/nvim-cmp",
    dependencies = {
      "hrsh7th/cmp-emoji",
    },
    opts = function(_, opts)
      local has_words_before = function()
        unpack = unpack or table.unpack
        local line, col = unpack(vim.api.nvim_win_get_cursor(0))
        return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
      end

      opts.mapping = vim.tbl_extend("force", opts.mapping, {
        ["<C-k>"] = cmp.mapping.select_prev_item(),
        ["<C-j>"] = cmp.mapping.select_next_item(),
        ["<C-Space>"] = cmp.mapping(cmp.mapping.complete(), { "i", "c" }),
        -- Accept currently selected item. If none selected, `select` first item.
        -- Set `select` to `false` to only confirm explicitly selected items.
        ["<CR>"] = cmp.mapping.confirm({ select = false }),
        ["<Tab>"] = cmp.mapping(function(fallback)
          if cmp.visible() then
            cmp.select_next_item()
          -- You could replace the expand_or_jumpable() calls with expand_or_locally_jumpable()
          -- this way you will only jump inside the snippet region
          elseif luasnip.expand_or_jumpable() then
            luasnip.expand_or_jump()
          elseif has_words_before() then
            cmp.complete()
          else
            fallback()
          end
        end, { "i", "s" }),
        ["<S-Tab>"] = cmp.mapping(function(fallback)
          if cmp.visible() then
            cmp.select_prev_item()
          elseif luasnip.jumpable(-1) then
            luasnip.jump(-1)
          else
            fallback()
          end
        end, { "i", "s" }),
      })
      opts.window = {
        completion = cmp.config.window.bordered(),
        documentation = cmp.config.window.bordered(),
      }
      opts.preselect = cmp.PreselectMode.None
      opts.completion = {
        completeopt = "noselect",
      }
    end,
  },
}