Removed syntastic and replaced it with ale

Read more here:
https://github.com/w0rp/ale

sources_non_forked/ale/ale_linters/javascript/jshint.vim

@@ -0,0 +1,38 @@
+" Author: Chris Kyrouac - https://github.com/fijshion
+" Description: JSHint for Javascript files
+
+call ale#Set('javascript_jshint_executable', 'jshint')
+call ale#Set('javascript_jshint_use_global', 0)
+
+function! ale_linters#javascript#jshint#GetExecutable(buffer) abort
+    return ale#node#FindExecutable(a:buffer, 'javascript_jshint', [
+    \   'node_modules/.bin/jshint',
+    \])
+endfunction
+
+function! ale_linters#javascript#jshint#GetCommand(buffer) abort
+    " Search for a local JShint config locaation, and default to a global one.
+    let l:jshint_config = ale#path#ResolveLocalPath(
+    \   a:buffer,
+    \   '.jshintrc',
+    \   get(g:, 'ale_jshint_config_loc', '')
+    \)
+
+    let l:command = ale#Escape(ale_linters#javascript#jshint#GetExecutable(a:buffer))
+    let l:command .= ' --reporter unix --extract auto'
+
+    if !empty(l:jshint_config)
+        let l:command .= ' --config ' . ale#Escape(l:jshint_config)
+    endif
+
+    let l:command .= ' -'
+
+    return l:command
+endfunction
+
+call ale#linter#Define('javascript', {
+\   'name': 'jshint',
+\   'executable_callback': 'ale_linters#javascript#jshint#GetExecutable',
+\   'command_callback': 'ale_linters#javascript#jshint#GetCommand',
+\   'callback': 'ale#handlers#unix#HandleAsError',
+\})