@include _number.regexp
string:
  from " to "
  escape:
    match /\\[bfnrt/'"\\]/
    match /\\u[0-9a-fA-F]{4}/
number:
  match /$(NUMBER)/
constant:
  keyword false null true undefined
operator:
  symbol { } [ ] ,
symbol:
  match /[A-Za-z_$][A-Za-z_$0-9]*/
