cmp.lua

vim.g.vsnip_filetypes = {
  typescript = { 'javascript' },
  typescriptreact = { 'javascript' },
  text = { 'license' },
}

local config = function()
  local cmp = require('cmp')
  local cmp_autopairs = require('nvim-autopairs.completion.cmp')
  local cmp_context = require('cmp.config.context')
  local lspkind = require('lspkind')
  local cmp_window_bordered = cmp.config.window.bordered()

  local feedkey = function(key, mode)
    vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes(key, true, true, true), mode, true)
  end

  cmp.event:on('confirm_done', cmp_autopairs.on_confirm_done())

  cmp.setup({
    snippet = {
      expand = function(args)
        vim.fn['vsnip#anonymous'](args.body)
      end,
    },
    window = {
      completion = cmp_window_bordered,
      documentation = cmp_window_bordered,
    },
    mapping = cmp.mapping.preset.insert({
      ['<Tab>'] = cmp.mapping(function(fallback)
        if vim.fn['vsnip#jumpable'](1) == 1 then
          feedkey('<Plug>(vsnip-jump-next)', '')
        else
          fallback()
        end
      end, { 'i', 's' }),
      ['<S-Tab>'] = cmp.mapping(function(fallback)
        if vim.fn['vsnip#jumpable'](-1) == 1 then
          feedkey('<Plug>(vsnip-jump-prev)', '')
        else
          fallback()
        end
      end, { 'i', 's' }),
      ['<C-j>'] = cmp.mapping(cmp.mapping.select_next_item()),
      ['<C-k>'] = cmp.mapping(cmp.mapping.select_prev_item()),
      ['<C-b>'] = cmp.mapping.scroll_docs(-4),
      ['<C-f>'] = cmp.mapping.scroll_docs(4),
      ['<C-s>'] = cmp.mapping.complete(),
      ['<C-e>'] = cmp.mapping.abort(),
      ['<CR>'] = cmp.mapping.confirm({ select = true }),
      ['<C-n>'] = cmp.config.disable,
      ['<C-p>'] = cmp.config.disable,
    }),
    sources = cmp.config.sources({
      { name = 'nvim_lsp' },
      { name = 'vsnip' },
      { name = 'nvim_lsp_signature_help' },
      { name = 'path' },
      { name = 'buffer' },
    }),
    formatting = {
      format = lspkind.cmp_format({
        mode = 'symbol_text',
        maxwidth = 50,
      }),
    },
    enabled = function()
      -- disable completion in comments
      -- See https://github.com/hrsh7th/nvim-cmp/pull/676#issuecomment-1002532096
      if cmp_context.in_treesitter_capture('comment') == true or cmp_context.in_syntax_group('Comment') then
        return false
      else
        return true
      end
    end,
  })

  cmp.setup.cmdline({ '/', '?' }, {
    mapping = cmp.mapping.preset.cmdline(),
    sources = {
      { name = 'buffer' },
    },
  })

  cmp.setup.cmdline(':', {
    mapping = cmp.mapping.preset.cmdline(),
    sources = cmp.config.sources({
      { name = 'path' },
      { name = 'cmdline' },
    }),
  })
end

return {
  'hrsh7th/nvim-cmp',
  dependencies = {
    'hrsh7th/cmp-buffer',
    'hrsh7th/cmp-cmdline',
    'hrsh7th/cmp-nvim-lsp',
    'hrsh7th/cmp-nvim-lsp-signature-help',
    'hrsh7th/cmp-path',
    'onsails/lspkind.nvim',
    'hrsh7th/cmp-vsnip',
    'rafamadriz/friendly-snippets',
    'hrsh7th/vim-vsnip',
    {
      -- TODO: move to its own file
      'windwp/nvim-autopairs',
      event = 'InsertEnter',
      config = function()
        local Rule = require('nvim-autopairs.rule')
        local npairs = require('nvim-autopairs')

        npairs.setup({})

        npairs.add_rules({
          Rule('<% ', ' %>', { 'ejs', 'hygen' }):set_end_pair_length(3),
          Rule('<%=', '  %>', { 'ejs', 'hygen' }):set_end_pair_length(3),
          Rule('<%-', '  %>', { 'ejs', 'hygen' }):set_end_pair_length(3),
          Rule('<%#', '  %>', { 'ejs', 'hygen' }):set_end_pair_length(3),
        })

        npairs.add_rules({
          Rule('{/*', ' */', { 'markdown.mdx' }),
        })
      end,
    },
  },
  event = 'VeryLazy',
  config = config,
}