Neovim + LanguageClient + ALE + Python + React Native

init.vim

" Plugins management

call plug#begin(stdpath('data') . '/plugged')

Plug 'scrooloose/nerdtree', { 'on':  'NERDTreeToggle' }
Plug 'dense-analysis/ale'
Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
Plug 'junegunn/fzf.vim'
Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }
Plug 'autozimu/LanguageClient-neovim', {
    \ 'branch': 'next',
    \ 'do': 'bash install.sh',
    \ }
Plug 'mxw/vim-jsx'
Plug 'vim-test/vim-test'

call plug#end()

" General settings

set nu
set tabstop=2 softtabstop=0 expandtab shiftwidth=2 smarttab
set autoindent
set smartindent
set noswapfile
set nowrap
set backspace=indent,eol,start
set laststatus=2
set encoding=UTF-8

hi link xmlEndTag xmlTag

autocmd CursorMovedI * if pumvisible() == 0|pclose|endif
autocmd InsertLeave * if pumvisible() == 0|pclose|endif

" ALE

let g:ale_disable_lsp = 1
let g:ale_fixers = { 
      \ 'python': ['black'],
      \ 'javascript': ['prettier'] 
      \ }
let b:ale_linters = { 
      \ 'python': ['pylint'],
      \ 'javascript': ['eslint']
      \ }
let b:ale_warn_about_trailing_whitespace = 0
let g:ale_fix_on_save = 1
let g:ale_lint_on_enter = 1

" FZF

map <c-p> :FZF<cr>

" NERDTree

map <C-n> :NERDTreeToggle<CR>

" deoplete

let g:deoplete#enable_at_startup = 1

" LanguageClient

set hidden

let g:LanguageClient_rootMarkers = {
\   'javascript': ['.flowconfig', 'package.json']
\ }

let g:LanguageClient_serverCommands = {
    \ 'javascript': ['flow', 'lsp'],
    \ 'javascript.jsx': ['flow', 'lsp'],
    \ 'python': ['/usr/local/bin/pyls'],
    \ }

nnoremap <silent> K :call LanguageClient#textDocument_hover()<CR>
nnoremap <silent> gd :call LanguageClient#textDocument_definition()<CR>
nnoremap <silent> gr :call LanguageClient#textDocument_rename()<CR>

" vim-test

nmap <silent> t<C-n> :TestNearest<CR>
nmap <silent> t<C-f> :TestFile<CR>
nmap <silent> t<C-s> :TestSuite<CR>
nmap <silent> t<C-l> :TestLast<CR>
nmap <silent> t<C-g> :TestVisit<CR>