using janet to detect delimiter issues

gistfile1.txt

   With content (in example0.janet):

   (defn b
     []
     (def a
       1))

   [:a {:b 1}
   1

   Janet 1.15.2-local linux/x64 - '(doc)' for help
   repl:1:> (def p (parser/new))
   <core/parser 0x55B3BD88B910>
   repl:2:> (def buf (slurp "./example0.janet"))
   @"(defn b\n  []\n  (def a\n    1))\n\n[:a {:b 1}\n1\n"
   repl:3:> (parser/consume p buf)
   44
   repl:4:> (parser/error p)
   nil
   repl:5:> (parser/state p)
   @{:delimiters "[" :frames @[@{:args @[nil] :column 0 :line 1 :type :root} @{:args @[((defn b [] (def a 1))) :a {:b 1}] :column 1 :line 6 :type :tuple}]}
   repl:6:> (parser/status p)
   :pending
   repl:7:> (parser/eof p)
   <core/parser 0x55B3BD88B910>
   repl:8:> (parser/error p)
   "unexpected end of source, [ opened at line 6, column 1"