invalid identity escape in regular expression

[MooreLxr]

error: invalid identity escape in regular expression in firefox

Details

• Browser and browser version: firefox 52.3.0
• OS version:
• xterm.js version: 5.3.0

[Tyriar]

Need a little more info on this:

• Does it happen in v5.4? (use the @xterm/xterm package)
• What were you doing at the time?
• Does it come with a stack trace?