neovim configuration

init.vim

" File: `~/.config/nvim/init.vim`
filetype off

" Required for Python on MacOS
"
" brew install python
" brew install python3
" pip2 install neovim --upgrade
" pip3 install neovim --upgrade
"
" brew install neovim/neovim/neovim

let g:python2_host_prog = '/usr/bin/python'
let g:python3_host_prog = '/usr/bin/python3'

" SECTION DEIN
" https://github.com/Shougo/dein.vim
" Installed to ~/.config/nvim/bundle

if &compatible
  set nocompatible " Be iMproved
endif

" Required:
let dein_path = $HOME . '/.config/nvim/bundle'
set runtimepath+=~/.config/nvim/./bundle/repos/github.com/Shougo/dein.vim

" Required:
if dein#load_state(dein_path)
  call dein#begin(dein_path)

  " Let dein manage dein
  " Required:
  call dein#add(dein_path)

  " Add or remove your plugins here:
  call dein#add('Shougo/neosnippet.vim')
  call dein#add('Shougo/neosnippet-snippets')
  call dein#add('Shougo/deoplete.nvim')
  call dein#add('scrooloose/nerdtree')              " NERD Tree file browser
  call dein#add('Xuyuanp/nerdtree-git-plugin')      " Git support in NERD Tree
  call dein#add('vim-airline/vim-airline')          " Status bar
  call dein#add('vim-airline/vim-airline-themes')   " Status bar themes
  call dein#add('tpope/vim-surround')               " Vim bracket/parentheses wrapping
  call dein#add('tpope/vim-repeat')                 " Make . powerful!
  call dein#add('morhetz/gruvbox')                  " gruvbox theme
  call dein#add('cloudhead/neovim-fuzzy')           " Fuzzy search with fzy
  call dein#add('numkil/ag.nvim')                   " the_silver_searcher
  call dein#add('tpope/vim-fugitive')               " Git stuff
  call dein#add('airblade/vim-gitgutter')           " Git annotations
  call dein#add('Valloric/MatchTagAlways')          " HTML tag highlight and jumping
  call dein#add('w0rp/ale')                         " Asynchronous Lint Engine
  call dein#add('luochen1990/rainbow')              " Flower power
  call dein#add('sheerun/vim-polyglot')             " Syntax support
  call dein#add('mhartington/nvim-typescript', {'build': './install.sh'})
  call dein#add('reasonml-editor/vim-reason-plus')  " Reason

  " Required:
  call dein#end()
  call dein#save_state()
endif

" Required:
filetype plugin indent on
syntax on

" Automatically install new plugins
if dein#check_install()
  call dein#install()
endif

" ENDSECTION DEIN

" Theming options
set background=dark
color gruvbox
let g:airline_theme='dark'

" Settings
set nowrap
set number
set clipboard=unnamedplus
set tabstop=2
set shiftwidth=2
set softtabstop=2
set expandtab " Insert spaces
set mouse=a   " Mouse mode
set autoread

" section: Functions {
function NERDTreeToggleInCurDir()
  " Stolen from https://github.com/scrooloose/nerdtree/issues/480
  if (exists("t:NERDTreeBufName") && bufwinnr(t:NERDTreeBufName) != -1)
    exe ":NERDTreeClose"
  else
    if (expand("%:t") != '')
      exe ":NERDTreeFind"
    else
      exe ":NERDTreeToggle"
    endif
  endif
endfunction

" Set filetype based on name of a template file that follows the syntax:
" $name.$format.template
"
" name: file name
function SetTemplateType(name)
  let l:extensions = split(a:name, "\\.")
  let l:template_type = l:extensions[len(l:extensions) - 2]
  let &filetype = l:template_type
endfunction

function JSOptions()
  " Additional word matching
  set isk+=-
  set isk+=$
endfunction

function VueOptions()
  syntax sync fromstart
endfunction

function SetFourSpaces()
  setlocal tabstop=4 shiftwidth=4 softtabstop=4
endfunction
" endsection: Functions }

" section: autocmd {
autocmd FileType javascript call JSOptions()
autocmd FileType typescript call JSOptions()
autocmd FileType vue call VueOptions()
autocmd FileType sh call SetFourSpaces()
autocmd FileType python call SetFourSpaces()

" Filetype aliases
autocmd FileType yml set ft=yaml
autocmd FileType ts set ft=typescript
autocmd FileType js set ft=javascript

" Close vim if NERDTree is the only open buffer
autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif

" Set file type for template files
autocmd bufenter *.template call SetTemplateType(expand( '%:t' ))
" endsection: autocmd }

" # Remaps & shortcuts
" Ctrl + S to search
nnoremap <C-s> :Ag <Space>
" Ctrl + T to open a new tab
nnoremap <C-t> :tabnew <Enter>
" Ctrl + ] to switch to next tab
nnoremap <C-]> :tabnext<CR>
" Ctrl + [ to switch to previous tab
nnoremap <C-[> :tabprevious<CR>
" Ctrl + E to open file-search pane
nnoremap <C-e> :call NERDTreeToggleInCurDir() <Enter>
" Ctrl + X to close a window
nnoremap <C-x> :q <Enter>
" Open terminal
nnoremap <C-M-t> :terminal <Enter>
" When you're literally like wtf is this code
nnoremap ` :Gblame <Enter>

" # Split Controls
" Ctrl + Left to move to split left
nnoremap <C-h> <C-W>h
nnoremap <C-Left> <C-W>h
" Ctrl + Down to move to split below
nnoremap <C-j> <C-W>j
nnoremap <C-Down> <C-W>j
" Ctrl + Up to move to split above
nnoremap <C-k> <C-W>k
nnoremap <C-Up> <C-W>k
" Ctrl + Right to move to split right
nnoremap <C-l> <C-W>l
nnoremap <C-Right> <C-W>l
" Change split size
nnoremap sh :vertical resize -5 <Enter>
nnoremap sl :vertical resize +5 <Enter>

" # Moving Around
" Disable shift jumping for people with RSI
" map <S-j> j
nnoremap <S-k> k
nnoremap <S-Down> j
nnoremap <S-Up> k
" Easy word Jumping
nnoremap <S-h> B
nnoremap <S-l> W
nnoremap <S-Left> B
nnoremap <S-Right> W
" Easily jump to first word
nnoremap <Space> ^
" Make % jump to closing tag
runtime macros/matchit.vim

" # Paste Powers
" nnoremap i :put<CR>
" nnoremap I :put!<CR>

" # Move lines up and down
nnoremap - ddkP
nnoremap _ ddp

" # Searching
" Double click to highlight word
nnoremap <2-LeftMouse> *
" Double / in visual mode searches selection
vmap // y/<C-R>"<CR>
nnoremap <C-p> :FuzzyOpen<CR>
nnoremap <C-i> :FuzzyGrep<Space>

" # Insert Mode Remaps
" In insert mode jj is Esc
imap jj <Esc>
" For when Churchill uses my Vim
imap jk <Esc>

" ALE Errors
nnoremap <silent> <C-k> <Plug>(ale_previous_wrap)
nnoremap <silent> <C-j> <Plug>(ale_next_wrap)

" Tab completion
inoremap <expr> <Tab> pumvisible() ? "\<C-n>" : "\<Tab>"
inoremap <expr> <S-Tab> pumvisible() ? "\<C-p>" : "\<S-Tab>"

" Plugin key-mappings.
" Note: It must be "imap" and "smap".  It uses <Plug> mappings.
imap <C-k>     <Plug>(neosnippet_expand_or_jump)
smap <C-k>     <Plug>(neosnippet_expand_or_jump)
xmap <C-k>     <Plug>(neosnippet_expand_target)

" SuperTab like snippets behavior.
" Note: It must be "imap" and "smap".  It uses <Plug> mappings.
"imap <expr><TAB>
" \ pumvisible() ? "\<C-n>" :
" \ neosnippet#expandable_or_jumpable() ?
" \    "\<Plug>(neosnippet_expand_or_jump)" : "\<TAB>"
smap <expr><TAB> neosnippet#expandable_or_jumpable() ?
\ "\<Plug>(neosnippet_expand_or_jump)" : "\<TAB>"

" Set background transparent
hi Normal ctermbg=none

" Shougo/deoplete.nvim
let g:deoplete#enable_at_startup = 1
" vim-airline/vim-airline
let g:airline_powerline_fonts = 1
" numkil/ag.nvim
let g:ag_working_path_mode="r"
" Valloric/MatchTagAlways
let g:mta_filetypes = {
      \'xml' : 1,
      \'vue' : 1,
      \'html' : 1,
      \'xhtml' : 1,
      \'eruby' : 1,
      \'javascript.jsx' : 1}
" w0rp/ale
let g:ale_completion_enabled = 0
let g:ale_linters = {
      \'sh': ['shellcheck'],
      \'javascript': ['eslint'],
      \'typescript': ['tslint', 'tsserver'],
      \'vue': ['eslint'],
      \'python': ['flake8'],
      \'xml': ['xmllint'],
      \'svg': ['xmllint'],
      \'json': ['prettier'],
      \'html': ['eslint', 'prettier']}
let g:ale_fixers = {
      \'sh': ['shellcheck'],
      \'javascript': ['eslint'],
      \'typescript': ['tslint'],
      \'vue': ['eslint'],
      \'python': ['autopep8'],
      \'xml': ['xmllint'],
      \'svg': ['xmllint'],
      \'json': ['prettier'],
      \'html': ['prettier']}
" luochen1990/rainbow
let g:rainbow_active = 1
" pangloss/vim-javascript
let g:javascript_plugin_jsdoc = 1
" mxw/vim-jsx
let g:jsx_ext_required = 1