Uncaught SyntaxError: Invalid flags supplied to RegExp constructor '\/'

[stpyaruwo]

[Enter steps to reproduce:]

1. ...
2. ...

Atom: 1.23.3 x64 Electron: 1.6.15 OS: Mac OS X 10.13.3 Thrown From: regex-railroad-diagram package 0.19.4

Stack Trace

Uncaught SyntaxError: Invalid flags supplied to RegExp constructor '\/'

At /Users/nagamitakaaki/.atom/packages/regex-railroad-diagram/lib/regex-railroad-diagram.coffee:166

SyntaxError: Invalid flags supplied to RegExp constructor '\/'
    at new RegExp (<anonymous>)
    at Object.cleanRegex (/packages/regex-railroad-diagram/lib/regex-railroad-diagram.coffee:166:32)
    at Object.checkForRegExp (/packages/regex-railroad-diagram/lib/regex-railroad-diagram.coffee:206:27)
    at /packages/regex-railroad-diagram/lib/regex-railroad-diagram.coffee:29:73
    at later (/packages/atom-beautify/node_modules/underscore-plus/node_modules/underscore/underscore.js:724:25)

Commands

 31x -0:55.7.0 core:move-right (input.hidden-input)
     -0:48.5.0 core:move-up (input.hidden-input)
 10x -0:48.2.0 core:move-left (input.hidden-input)
  3x -0:46 core:backspace (input.hidden-input)
  2x -0:38.7.0 core:move-right (input.hidden-input)
  2x -0:38.4.0 core:move-left (input.hidden-input)
     -0:27.5.0 core:cut (input.hidden-input)
     -0:27.4.0 core:move-right (input.hidden-input)
  3x -0:27 core:backspace (input.hidden-input)
  2x -0:25.6.0 core:move-left (input.hidden-input)
     -0:24.5.0 core:move-right (input.hidden-input)
  2x -0:23.7.0 core:backspace (input.hidden-input)
     -0:20.8.0 core:move-left (input.hidden-input)
     -0:20.1.0 core:copy (input.hidden-input)
     -0:15.2.0 core:paste (input.hidden-input)
     -0:13.4.0 core:undo (input.hidden-input)

Non-Core Packages

atom-beautify 0.30.4 
atom-html-preview 0.2.2 
autocomplete-paths 2.11.0 
color-picker 2.2.5 
japanese-menu 1.13.0 
pretty-json 1.6.4 
regex-railroad-diagram 0.19.4 
show-ideographic-space 1.0.2 
term3 0.22.1 
terminal-plus 0.14.5