Not being able to customise Syntastic

[Misha Reyzlin]

Hi, I'm trying to use Janus and add custom settings for Syntastic.

If I place the following in either `~/.vimrc.before` or `~/.vimrc.after` the settings are not picked up:

set wildignore+=*/node_modules/*,*.so,*.swp,*.zi

" LINTER SETTINGS

set statusline+=%#warningmsg#

set statusline+=%{SyntasticStatuslineFlag()}

set statusline+=%*

let g:syntastic_always_populate_loc_list = 1

let g:syntastic_auto_loc_list = 1

let g:syntastic_check_on_open = 1

let g:syntastic_check_on_wq = 0

let s:eslint_path = system('PATH=$(npm bin):$PATH && which eslint_d')

let b:syntastic_javascript_eslint_exec = substitute(s:eslint_path, '^\n*\s*\(.\{-}\)\n*\s*$', '\1', '')

let g:syntastic_javascript_checkers=['eslint']

If I run `source ~/.vimrc.before` after Vim has init, the settings are picked up.

What am I doing wrong? 

Thanks!