My nvim config

init.vim

" Start plugins
"""""""""""""""
call plug#begin('~/.config/nvim/plugged')

    " One Dark theme
    Plug 'joshdick/onedark.vim'
    " Automatic syntax for a bunch of languages
    Plug 'sheerun/vim-polyglot'
    " Detect editorconfig file
    Plug 'editorconfig/editorconfig-vim'
    " GitGutter
    Plug 'airblade/vim-gitgutter'
    " Simple tab autocompletion
    Plug 'ajh17/vimcompletesme'
    " Automatice quote & brace completion
    Plug 'raimondi/delimitmate'
    " Linting
    Plug 'w0rp/ale'
    " File tree explorer
    Plug 'scrooloose/nerdtree'
    " Code comment helper
    Plug 'scrooloose/nerdcommenter'
    " Surrounding quote/brace helper
    Plug 'tpope/vim-surround'
    " Git plugin
    Plug 'tpope/vim-fugitive'
    " GitHub enhancement to fugitive
    Plug 'tpope/vim-rhubarb'
    " fzf fuzzy finder installed with homebrew
    Plug '/usr/local/opt/fzf'
    " fzf vim plugin
    Plug 'junegunn/fzf.vim'
    " No distractions mode
    Plug 'junegunn/goyo.vim'
    " Minimal status bar
    Plug 'itchyny/lightline.vim'

call plug#end()
" End plugins
"""""""""""""

" Begin compat helpers
""""""""""""""""""""""
"Use 24-bit (true-color) mode in Vim/Neovim when outside tmux.
if (empty($TMUX))
	if (has("nvim"))
		let $NVIM_TUI_ENABLE_TRUE_COLOR=1
	endif
	if (has("termguicolors"))
		set termguicolors
	endif
endif
" End compat helpers
""""""""""""""""""""

" Begin config
""""""""""""""
syntax on
" One Dark colour theme
colorscheme onedark
" Refresh every 250ms
set updatetime=250
" Show 80 col
set colorcolumn=80
" Show line number
set number
" Enable filetype plugins
filetype plugin on
" Show existing tab with 4 spaces width
set tabstop=4
" When indenting with '>', use 4 spaces width
set shiftwidth=4
" On pressing tab, insert 4 spaces
set expandtab
" Autoindent?
set autoindent
" Reload files when changed on disk, i.e. via `git checkout`
set autoread
" Fix broken backspace in some setups
set backspace=2
" See :help crontab
set backupcopy=yes
" Yank and paste with the system clipboard
set clipboard=unnamed
" Don't store swapfiles in the current directory
set directory-=.
" Save with utf8 encoding
set encoding=utf-8
" Case-insensitive search
set ignorecase
" Search as you type
set incsearch
" Always show statusline
set laststatus=2
" Show trailing whitespace
set list
" Display tabs an invisible characters
set listchars=tab:▸\ ,trail:▫
" Show where you are
set ruler
" Show context above/below cursorline
set scrolloff=5
" Normal mode indentation commands use 2 spaces
set shiftwidth=2
" Show the command line at the bottom
set showcmd
" Case-sensitive search if any caps
set smartcase
" Insert mode tab and backspace use 2 spaces
set softtabstop=2
" Actual tabs occupy 8 characters
set tabstop=8
" Show a navigable menu for tab completion
set wildmenu
" Wildmode config
set wildmode=longest,list,full

" Enable basic mouse behavior such as resizing buffers.
set mouse=a
if exists('$TMUX')  " Support resizing in tmux
  set ttymouse=xterm2
endif

" Set the cursor back to a vertical bar on exit
au VimLeave * set guicursor=a:ver1-blinkon1

" Try to autoload files that have changed on the file system
autocmd BufEnter,FocusGained * checktime

" FixWhitespace function taken from bronson/vim-trailing-whitespace
function! s:FixWhitespace(line1,line2)
    let l:save_cursor = getpos(".")
    silent! execute ':' . a:line1 . ',' . a:line2 . 's/\\\@<!\s\+$//'
    call setpos('.', l:save_cursor)
endfunction
" Run :FixWhitespace to remove end of line white space
command! -range=% FixWhitespace call <SID>FixWhitespace(<line1>,<line2>)
" Fix whitespace on save
au BufWritePre * :FixWhitespace

" ALE Settings
let g:ale_linters = {
\  'javascript': ['eslint', 'xo'],
\}

let g:ale_fixers = {
\   'javascript': [
\       'prettier',
\       'eslint',
\   ],
\}

" \+p to autofix
map <Leader>p <Plug>(ale_fix)

let g:ale_fix_on_save = 1

" NERDTree
map <C-n> :NERDTreeToggle<CR>
let g:NERDTreeIgnore = ['node_modules', 'tmp', 'flow-typed']
let g:NERDTreeShowHidden = 1

" NERDCommenter
" <C-_> is Ctrl+/ on MacOS
" <leader>c<space> is NERDComToggleComment
map <C-_> <leader>c<space>
let g:NERDSpaceDelims = 1

" fzf keybinds
noremap <C-p> :Files<CR>
noremap <C-r> :Tags<CR>
noremap <C-f> :Ag<CR>
" Only generate tags for js
let g:fzf_tags_command = 'ctags -R --languages=javascript'
" Jump to the existing window if possible
let g:fzf_buffers_jump = 1
" Ag to search file contents only
command! -bang -nargs=* Ag call fzf#vim#ag(<q-args>, {'options': '--delimiter : --nth 4..'}, <bang>0)
" Close the fzf buffer quicker when you hit esc
" Some sort of nvim bug
" See https://github.com/junegunn/fzf/issues/632
if has('nvim')
  aug fzf_setup
    au!
    au TermOpen term://*FZF tnoremap <silent> <buffer><nowait> <esc> <c-c>
  aug END
end

" Tabs
noremap <Leader>e :tabnew<CR>
noremap <Leader>w :tabclose<CR>
noremap <Leader>1 1gt
noremap <Leader>2 2gt
noremap <Leader>3 3gt
noremap <Leader>4 4gt
noremap <Leader>5 5gt
noremap <Leader>6 6gt
noremap <Leader>7 7gt
noremap <Leader>8 8gt
noremap <Leader>9 9gt

" Alias :github to :Gbrowse
cnoreabbrev gh Gbrowse

" Status bar config
" Remove redundant mode line
set noshowmode
let g:lightline = {
\  'colorscheme': 'one',
\  'active': {
\    'left': [
\      [ 'mode' ],
\      ['gitbranch', 'filename', 'modified']
\    ],
\    'right': [
\      ['lineinfo'],
\      ['percent'],
\      ['linter_warnings', 'linter_errors', 'linter_ok']
\    ],
\  },
\  'component_function': {
\    'gitbranch': 'fugitive#head'
\  },
\ 'component_expand': {
\   'linter_warnings': 'LightlineLinterWarnings',
\   'linter_errors': 'LightlineLinterErrors',
\   'linter_ok': 'LightlineLinterOK'
\ },
\ 'component_type': {
\   'linter_warnings': 'warning',
\   'linter_errors': 'error',
\   'linter_ok': 'ok',
\ },
\}

function! LightlineLinterWarnings() abort
  let l:counts = ale#statusline#Count(bufnr(''))
  let l:all_errors = l:counts.error + l:counts.style_error
  let l:all_non_errors = l:counts.total - l:all_errors
  return l:counts.total == 0 ? '' : printf('%d ●', all_non_errors)
endfunction

function! LightlineLinterErrors() abort
  let l:counts = ale#statusline#Count(bufnr(''))
  let l:all_errors = l:counts.error + l:counts.style_error
  let l:all_non_errors = l:counts.total - l:all_errors
  return l:counts.total == 0 ? '' : printf('%d ✗', all_errors)
endfunction

function! LightlineLinterOK() abort
  let l:counts = ale#statusline#Count(bufnr(''))
  let l:all_errors = l:counts.error + l:counts.style_error
  let l:all_non_errors = l:counts.total - l:all_errors
  return l:counts.total == 0 ? '✓ ' : ''
endfunction

autocmd User ALELint call s:MaybeUpdateLightline()

" Update and show lightline but only if it's visible (e.g., not in Goyo)
function! s:MaybeUpdateLightline()
  if exists('#lightline')
    call lightline#update()
  end
endfunction

" MUST COME LAST
" Read project .vimrc files
set exrc
" Only if they are owned by me
set secure