Update

after/ftplugin/javascript.vim

@@ -0,0 +1,12 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'javascript') == -1
+  
+" Vim filetype plugin file
+" Language:     JavaScript
+" Maintainer:   vim-javascript community
+" URL:          https://github.com/pangloss/vim-javascript
+
+setlocal iskeyword+=$ suffixesadd+=.js
+
+let b:undo_ftplugin .= ' | setlocal iskeyword< suffixesadd<'
+
+endif