NeoVim config for python and JS

init.vim

" Requirements :
" plug.vim
" pip3 install neovim
" npm install -g neovim
" Post-setup
" :PlugInstall
" :UpdateRemotePlugins
" :CocInstall coc-json coc-tsserver

" pyenv
let g:python_host_prog = "/home/alicegg/.pyenv/versions/neovim2/bin/python"
let g:python3_host_prog = "/home/alicegg/.pyenv/versions/neovim3/bin/python"

" plugins
call plug#begin('~/.vim/plugged')
Plug 'ctrlpvim/ctrlp.vim'
Plug 'vim-airline/vim-airline'
Plug 'tpope/vim-fugitive'
Plug 'zer0tonin/vim-dracula'
Plug 'editorconfig/editorconfig-vim'
Plug 'tpope/vim-sleuth'
Plug 'neoclide/coc.nvim', {'branch':'release'}
call plug#end()

" coc config
set hidden
set nobackup
set nowritebackup
set cmdheight=2
set updatetime=300
set shortmess+=c
set signcolumn=number

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
inoremap <silent><expr> <c-space> coc#refresh()
inoremap <silent><expr> <cr> pumvisible() ? coc#_select_confirm()
                              \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"

nmap <silent> [g <Plug>(coc-diagnostic-prev)
nmap <silent> ]g <Plug>(coc-diagnostic-next)
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)

nnoremap <silent> K :call <SID>show_documentation()<CR>
function! s:show_documentation()
  if (index(['vim','help'], &filetype) >= 0)
    execute 'h '.expand('<cword>')
  elseif (coc#rpc#ready())
    call CocActionAsync('doHover')
  else
    execute '!' . &keywordprg . " " . expand('<cword>')
  endif
endfunction

autocmd CursorHold * silent call CocActionAsync('highlight')
nmap <leader>rn <Plug>(coc-rename)
xmap <leader>f  <Plug>(coc-format-selected)
nmap <leader>f  <Plug>(coc-format-selected)

augroup mygroup
  autocmd!
  autocmd FileType typescript,json setl formatexpr=CocAction('formatSelected')
  autocmd User CocJumpPlaceholder call CocActionAsync('showSignatureHelp')
augroup end

xmap <leader>a  <Plug>(coc-codeaction-selected)
nmap <leader>a  <Plug>(coc-codeaction-selected)
nmap <leader>ac  <Plug>(coc-codeaction)
nmap <leader>qf  <Plug>(coc-fix-current)
xmap if <Plug>(coc-funcobj-i)
omap if <Plug>(coc-funcobj-i)
xmap af <Plug>(coc-funcobj-a)
omap af <Plug>(coc-funcobj-a)
xmap ic <Plug>(coc-classobj-i)
omap ic <Plug>(coc-classobj-i)
xmap ac <Plug>(coc-classobj-a)
omap ac <Plug>(coc-classobj-a)
nnoremap <nowait><expr> <C-f> coc#float#has_scroll() ? coc#float#scroll(1) : "\<C-f>"
nnoremap <nowait><expr> <C-b> coc#float#has_scroll() ? coc#float#scroll(0) : "\<C-b>"
inoremap <nowait><expr> <C-f> coc#float#has_scroll() ? "\<c-r>=coc#float#scroll(1)\<cr>" : "\<Right>"
inoremap <nowait><expr> <C-b> coc#float#has_scroll() ? "\<c-r>=coc#float#scroll(0)\<cr>" : "\<Left>"
vnoremap <nowait><expr> <C-f> coc#float#has_scroll() ? coc#float#nvim_scroll(1, 1) : "\<C-f>"
vnoremap <nowait><expr> <C-b> coc#float#has_scroll() ? coc#float#nvim_scroll(0, 1) : "\<C-b>"
nmap <silent> <C-s> <Plug>(coc-range-select)
xmap <silent> <C-s> <Plug>(coc-range-select)
command! -nargs=0 Format :call CocAction('format')
command! -nargs=? Fold :call     CocAction('fold', <f-args>)
command! -nargs=0 OR   :call     CocAction('runCommand', 'editor.action.organizeImport')
set statusline^=%{coc#status()}%{get(b:,'coc_current_function','')}

nnoremap <silent><nowait> <space>a  :<C-u>CocList diagnostics<cr>
nnoremap <silent><nowait> <space>e  :<C-u>CocList extensions<cr>
nnoremap <silent><nowait> <space>c  :<C-u>CocList commands<cr>
nnoremap <silent><nowait> <space>o  :<C-u>CocList outline<cr>
nnoremap <silent><nowait> <space>s  :<C-u>CocList -I symbols<cr>
nnoremap <silent><nowait> <space>j  :<C-u>CocNext<CR>
nnoremap <silent><nowait> <space>k  :<C-u>CocPrev<CR>
nnoremap <silent><nowait> <space>p  :<C-u>CocListResume<CR>


" ctrl c to exit insert
inoremap <c-c> <ESC>

" Easy window switching
nmap <silent> <A-Up> :wincmd k<CR>
nmap <silent> <A-Down> :wincmd j<CR>
nmap <silent> <A-Left> :wincmd h<CR>
nmap <silent> <A-Right> :wincmd l<CR>

" theme
colorscheme dracula 

" disable POSIX new line 
set nofixeol

" display line numbers
set number

" horizontal scrolling
set nowrap
set sidescroll=1

" tabs (overriden by vim-sleuth / editorconfig)
set tabstop=4
set softtabstop=4 |
set shiftwidth=4 |
set expandtab |
set autoindent |
set fileformat=unix
     
" escape terminal mode with ESC
tnoremap <Esc> <C-\><C-n>

" allow project specific config files
set exrc

" filetype plugin
:filetype plugin on

" ignore ctrlp
let g:ctrlp_custom_ignore = '\v[\/](node_modules|target|dist|venv)|(\.(swp|ico|git|svn))$'