Indent correctly with template string

ftplugin/vue.vim

@@ -10,3 +10,8 @@ if exists("loaded_matchit")
         \ '<\@<=dl\>[^>]*\%(>\|$\):<\@<=d[td]\>:<\@<=/dl>,' .
         \ '<\@<=\([^/][^ \t>]*\)[^>]*\%(>\|$\):<\@<=/\1>'
 endif
+
+" Indent correctly with template string for vim-javascript/builtin
+" indentexpr
+let b:syng_str = '^\%(.*template\)\@!.*string\|special'
+let b:syng_strcom = '^\%(.*template\)\@!.*string\|comment\|regex\|special\|doc'