if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'graphql') == -1

" GraphQL Support 
if exists('b:current_syntax')
  let s:current_syntax = b:current_syntax
  unlet b:current_syntax
endif
syn include @GraphQLSyntax syntax/graphql.vim
if exists('s:current_syntax')
  let b:current_syntax = s:current_syntax
endif

let s:tags = '\%(' . join(graphql#javascript_tags(), '\|') . '\)'

exec 'syntax region graphqlTemplateString start=+' . s:tags . '\@20<=`+ skip=+\\`+ end=+`+ contains=@GraphQLSyntax,typescriptTemplateSubstitution extend'
exec 'syntax match graphqlTaggedTemplate +' . s:tags . '\ze`+ nextgroup=graphqlTemplateString'

" Support expression interpolation ((${...})) inside template strings.
syntax region graphqlTemplateExpression start=+${+ end=+}+ contained contains=typescriptTemplateSubstitution containedin=graphqlFold keepend

hi def link graphqlTemplateString typescriptTemplate
hi def link graphqlTemplateExpression typescriptTemplateSubstitution

syn cluster typescriptExpression add=graphqlTaggedTemplate
syn cluster graphqlTaggedTemplate add=graphqlTemplateString


endif