Add sql support for javascript

after/syntax/javascript/sql.vim

@@ -0,0 +1,26 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'javascript-sql') == -1
+
+" Vim plugin
+" Language: JavaScript
+" Maintainer: Ian Langworth <ian@langworth.com>
+
+if exists('b:current_syntax')
+  let s:current_syntax = b:current_syntax
+  unlet b:current_syntax
+endif
+
+exec 'syntax include @SQLSyntax syntax/' . g:javascript_sql_dialect . '.vim'
+if exists('s:current_syntax')
+  let b:current_syntax = s:current_syntax
+endif
+
+syntax region sqlTemplateString start=+`+ skip=+\\\(`\|$\)+ end=+`+ contains=@SQLSyntax,jsTemplateExpression,jsSpecial extend
+exec 'syntax match sqlTaggedTemplate +\%(SQL\)\%(`\)\@=+ nextgroup=sqlTemplateString'
+
+hi def link sqlTemplateString jsTemplateString
+hi def link sqlTaggedTemplate jsTaggedTemplate
+
+syn cluster jsExpression add=sqlTaggedTemplate
+syn cluster sqlTaggedTemplate add=sqlTemplateString
+
+endif