Regular expressions with dotAll flag not highlighted correctly

[TheLastZombie]

Describe the issue With the Babel JavaScript extension enabled, regular expressions that utilize the s / dotAll flag are not highlighted as such.

Sample Code to Reproduce

RegExp(/\n\//)  // without flags, displayed correctly
RegExp(/\n\//g) // valid flag other than s, displayed correctly
RegExp(/\n\//a) // invalid flag, displayed correctly (same as without extension)
RegExp(/\n\//s) // dotAll flag, displayed incorrectly

Screenshot of Current Behavior

Screenshot of Expected Behavior