updated vimrc

.vimrc

@@ -10,11 +10,6 @@ if exists('g:gui_oni')
 else 
   Plug 'vim-airline/vim-airline'
   Plug 'vim-airline/vim-airline-themes'
-
-  Plug 'autozimu/LanguageClient-neovim', {
-      \ 'branch': 'next',
-      \ 'do': 'bash install.sh',
-      \ }
   Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
   Plug 'junegunn/fzf.vim'
 
@@ -23,6 +18,8 @@ else
 
   Plug 'pangloss/vim-javascript'
   Plug 'maxmellon/vim-jsx-pretty'
+  " Use release branch (Recommend)
+  Plug 'neoclide/coc.nvim', {'branch': 'release'}
 
   " Async autocompletion
   Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }
@@ -38,27 +35,6 @@ else
   let g:table_mode_corner_corner='+'
   let g:table_mode_header_fillchar='='
 
-  " Automatically start language servers.
-  let g:LanguageClient_autoStart = 1
-"let g:LanguageClient_rootMarkers = [
-"\ '.git'
-"\ 'default.nix',
-"\ 'package-lib.yaml',
-"\ '*.cabal',
-"\ 'stack.yaml',
-"\ ]
-  let g:LanguageClient_serverCommands = {
-    \ 'javascript' : ['node','~/.npm-global/lib/node_modules/javascript-typescript-langserver/lib/language-server-stdio','-l','/tmp/jsls.log'],
-    \ 'python': ['pyls','--log-file','/tmp/pyls.log'],
-    \ 'haskell' : ['hie-wrapper','--debug', '--vomit','--lsp','-l','/tmp/hie.log'],
-    \ 'vue' : ['vls','--stdio']
-    \ }
-
-
-  let g:LanguageClient_loggingLevel = 'DEBUG' " Use highest logging level
-  let g:LanguageClient_loggingFile = '/tmp/lsp-client.log'
-  let g:LanguageClient_settingsPath = "~/.vim/lsp-settings.json"
-
   if has('mouse')
     set mouse=a
   endif
@@ -76,6 +52,8 @@ Plug 'airblade/vim-gitgutter'
 Plug 'christoomey/vim-tmux-navigator'
 Plug 'purescript-contrib/purescript-vim'
 Plug 'neovimhaskell/haskell-vim',
+Plug 'HerringtonDarkholme/yats.vim'
+Plug 'mhartington/nvim-typescript', {'do': './install.sh'}
 Plug 'frigoeu/psc-ide-vim'
 Plug 'toyamarinyon/vim-swift'
 Plug 'lumiliet/vim-twig'
@@ -159,6 +137,7 @@ nnoremap <C-l> <C-w>l
 "================================ Turn Swap files off =======================
 set noswapfile
 set nobackup
+set nowritebackup
 set nowb
 
 "===================================== Scrolling ============================
@@ -189,11 +168,150 @@ nnoremap <silent> <leader>gw :Gw <enter>
 nnoremap <silent> <leader>gst :Gst <enter>
 
 " Set language server bindings
-nnoremap <silent> <leader>j :call LanguageClient#textDocument_hover()<CR>
-nnoremap <silent> <leader>d :call LanguageClient#textDocument_definition()<CR>
-nnoremap <silent> <leader>r :call LanguageClient#textDocument_rename()<CR>
-nnoremap <silent> <leader>a :call LanguageClient#textDocument_codeAction()<CR>
-nnoremap <silent> <leader>e :call LanguageClient#explainErrorAtPoint()<CR>
+"nnoremap <silent> <leader>j :call LanguageClient#textDocument_hover()<CR>
+"nnoremap <silent> <leader>d :call LanguageClient#textDocument_definition()<CR>
+"nnoremap <silent> <leader>r :call LanguageClient#textDocument_rename()<CR>
+"nnoremap <silent> <leader>a :call LanguageClient#textDocument_codeAction()<CR>
+"nnoremap <silent> <leader>e :call LanguageClient#explainErrorAtPoint()<CR>
+
+" =================================  Coc.nvim  ====================================== 
+"
+" TextEdit might fail if hidden is not set.
+set hidden
+
+" Give more space for displaying messages.
+set cmdheight=2
+
+" Having longer updatetime (default is 4000 ms = 4 s) leads to noticeable
+" delays and poor user experience.
+set updatetime=300
+
+" Don't pass messages to |ins-completion-menu|.
+set shortmess+=c
+
+" Always show the signcolumn, otherwise it would shift the text each time
+" diagnostics appear/become resolved.
+set signcolumn=yes
+
+" 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>"
+
+function! s:check_back_space() abort
+  let col = col('.') - 1
+  return !col || getline('.')[col - 1]  =~# '\s'
+endfunction
+
+" Use <c-space> to trigger completion.
+inoremap <silent><expr> <c-space> coc#refresh()
+
+" Use <cr> to confirm completion, `<C-g>u` means break undo chain at current
+" position. Coc only does snippet and additional edit on confirm.
+if has('patch8.1.1068')
+  " Use `complete_info` if your (Neo)Vim version supports it.
+  inoremap <expr> <cr> complete_info()["selected"] != "-1" ? "\<C-y>" : "\<C-g>u\<CR>"
+else
+  imap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
+endif
+
+" Use `[g` and `]g` to navigate diagnostics
+nmap <silent> [g <Plug>(coc-diagnostic-prev)
+nmap <silent> ]g <Plug>(coc-diagnostic-next)
+
+" GoTo code navigation.
+nmap <silent> gd <Plug>(coc-definition)
+nmap <silent> gy <Plug>(coc-type-definition)
+nmap <silent> gi <Plug>(coc-implementation)
+nmap <silent> gr <Plug>(coc-references)
+
+" Use K to show documentation in preview window.
+nnoremap <silent> K :call <SID>show_documentation()<CR>
+
+function! s:show_documentation()
+  if (index(['vim','help'], &filetype) >= 0)
+    execute 'h '.expand('<cword>')
+  else
+    call CocAction('doHover')
+  endif
+endfunction
+
+" Highlight the symbol and its references when holding the cursor.
+autocmd CursorHold * silent call CocActionAsync('highlight')
+
+" Symbol renaming.
+nmap <leader>rn <Plug>(coc-rename)
+
+" Formatting selected code.
+xmap <leader>f  <Plug>(coc-format-selected)
+nmap <leader>f  <Plug>(coc-format-selected)
+
+augroup mygroup
+  autocmd!
+  " Setup formatexpr specified filetype(s).
+  autocmd FileType typescript,json setl formatexpr=CocAction('formatSelected')
+  " Update signature help on jump placeholder.
+  autocmd User CocJumpPlaceholder call CocActionAsync('showSignatureHelp')
+augroup end
+
+" Applying codeAction to the selected region.
+" Example: `<leader>aap` for current paragraph
+xmap <leader>a  <Plug>(coc-codeaction-selected)
+nmap <leader>a  <Plug>(coc-codeaction-selected)
+
+" Remap keys for applying codeAction to the current line.
+nmap <leader>ac  <Plug>(coc-codeaction)
+" Apply AutoFix to problem on the current line.
+nmap <leader>qf  <Plug>(coc-fix-current)
+
+" Introduce function text object
+" NOTE: Requires 'textDocument.documentSymbol' support from the language server.
+xmap if <Plug>(coc-funcobj-i)
+xmap af <Plug>(coc-funcobj-a)
+omap if <Plug>(coc-funcobj-i)
+omap af <Plug>(coc-funcobj-a)
+
+" Use <TAB> for selections ranges.
+" NOTE: Requires 'textDocument/selectionRange' support from the language server.
+" coc-tsserver, coc-python are the examples of servers that support it.
+nmap <silent> <TAB> <Plug>(coc-range-select)
+xmap <silent> <TAB> <Plug>(coc-range-select)
+
+" Add `:Format` command to format current buffer.
+command! -nargs=0 Format :call CocAction('format')
+
+" Add `:Fold` command to fold current buffer.
+command! -nargs=? Fold :call     CocAction('fold', <f-args>)
+
+" Add `:OR` command for organize imports of the current buffer.
+command! -nargs=0 OR   :call     CocAction('runCommand', 'editor.action.organizeImport')
+
+" Add (Neo)Vim's native statusline support.
+" NOTE: Please see `:h coc-status` for integrations with external plugins that
+" provide custom statusline: lightline.vim, vim-airline.
+set statusline^=%{coc#status()}%{get(b:,'coc_current_function','')}
+
+" Mappings using CoCList:
+" Show all diagnostics.
+nnoremap <silent> <space>a  :<C-u>CocList diagnostics<cr>
+" Manage extensions.
+nnoremap <silent> <space>e  :<C-u>CocList extensions<cr>
+" Show commands.
+nnoremap <silent> <space>c  :<C-u>CocList commands<cr>
+" Find symbol of current document.
+nnoremap <silent> <space>o  :<C-u>CocList outline<cr>
+" Search workspace symbols.
+nnoremap <silent> <space>s  :<C-u>CocList -I symbols<cr>
+" Do default action for next item.
+nnoremap <silent> <space>j  :<C-u>CocNext<CR>
+" Do default action for previous item.
+nnoremap <silent> <space>k  :<C-u>CocPrev<CR>
+" Resume latest coc list.
+nnoremap <silent> <space>p  :<C-u>CocListResume<CR>
 
 "============================ Use Tab for auto completion ===================
 function! SuperTab()