Checks that stepInto nested arrow function doesn't produce crash. paused (anonymous) (test.js:2:0) (anonymous) (:0:6) paused rec (test.js:1:19) (anonymous) (test.js:2:0) (anonymous) (:0:6) paused rec (test.js:2:5) (anonymous) (test.js:2:0) (anonymous) (:0:6) paused (anonymous) (test.js:2:5) (anonymous) (:0:6) paused (anonymous) (:0:8)