Rework completion window with icons

conf/nvim/lua/plugins/cmp.lua

@@ -2,6 +2,34 @@
 local capabilities = vim.lsp.protocol.make_client_capabilities()
 capabilities = require('cmp_nvim_lsp').update_capabilities(capabilities)
 
+local kind_icons = {
+  Text = "",
+  Method = "",
+  Function = "",
+  Constructor = "",
+  Field = "",
+  Variable = "",
+  Class = "ﴯ",
+  Interface = "",
+  Module = "",
+  Property = "ﰠ",
+  Unit = "",
+  Value = "",
+  Enum = "",
+  Keyword = "",
+  Snippet = "",
+  Color = "",
+  File = "",
+  Reference = "",
+  Folder = "",
+  EnumMember = "",
+  Constant = "",
+  Struct = "",
+  Event = "",
+  Operator = "",
+  TypeParameter = ""
+}
+
 -- nvim-cmp setup
 local cmp = require 'cmp'
 cmp.setup {
@@ -31,6 +59,12 @@ cmp.setup {
       end
     end,
   },
+  formatting = {
+    format = function(_, vim_item)
+      vim_item.kind = string.format('%s %s', kind_icons[vim_item.kind], vim_item.kind)
+      return vim_item
+    end,
+  },
   sources = {
     { name = 'nvim_lsp' },
   },