enabled snippets autocomplete via tab as well as VSCode like navigation via tab

neovim/.config/nvim/init.vim

@@ -117,8 +117,16 @@ function! s:check_back_space() abort
   return !col || getline('.')[col - 1]  =~ '\s'
 endfunction
 
-" Tab for autocomplete
-inoremap <silent><expr> <Tab>
-      \ pumvisible() ? "\<C-n>" :
-      \ <SID>check_back_space() ? "\<Tab>" :
+" Make <tab> used for trigger completion, completion confirm, snippet expand and jump like VSCode.
+inoremap <silent><expr> <TAB>
+      \ pumvisible() ? coc#_select_confirm() :
+      \ coc#expandableOrJumpable() ? "\<C-r>=coc#rpc#request('doKeymap', ['snippets-expand-jump',''])\<CR>" :
+      \ <SID>check_back_space() ? "\<TAB>" :
       \ coc#refresh()
+
+function! s:check_back_space() abort
+  let col = col('.') - 1
+  return !col || getline('.')[col - 1]  =~# '\s'
+endfunction
+
+let g:coc_snippet_next = '<tab>'