Added tab like in vscode

.config/nvim/init.vim

@@ -87,6 +87,24 @@ call plug#end()
 " Instalation coc extentions
 let g:coc_global_extensions = ['coc-solargraph', 'coc-go', 'coc-yaml', 'coc-pyright', 'coc-json' , 'coc-markdownlint' , 'coc-sh', 'coc-prettier', 'coc-diagnostic', 'coc-perl']
 
+function! s:check_back_space() abort
+  let col = col('.') - 1
+  return !col || getline('.')[col - 1]  =~# '\s'
+endfunction
+" Make <CR> auto-select the first completion item and notify coc.nvim to
+" format on enter, <cr> could be remapped by other vim plugin
+inoremap <silent><expr> <cr> pumvisible() ? coc#_select_confirm()
+                              \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"
+
+" Use tab for trigger completion with characters ahead and navigate.
+" NOTE: Use command ':verbose imap <tab>' to make sure tab is not mapped by
+" other plugin before putting this into your config.
+inoremap <silent><expr> <TAB>
+      \ pumvisible() ? "\<C-n>" :
+      \ <SID>check_back_space() ? "\<TAB>" :
+      \ coc#refresh()
+inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"
+
 " Status-line
 set statusline=
 set statusline+=%#IncSearch#