node 7.0.0 breaks task

[navneetgarg-jahia]

I use the n2 package to switch between node versions.
Recently switched to the latest node version and found that bower-concat broke immediately.
Don't even have to execute any tasks (just run --help) and it will show the error in the console.
Below is the output of using both node v6.9.1 and node v7.0.0

bash-3.2$ n 6.9.1
bash-3.2$ node --version
v6.9.1
bash-3.2$ grunt --version
grunt-cli v1.2.0
grunt v0.4.5
bash-3.2$ grunt --help
(node:24954) fs: re-evaluating native module sources is not supported. If you are using the graceful-fs module, please update it to a more recent version.
Grunt: The JavaScript Task Runner (v0.4.5)

Usage
 grunt [options] [task [task ...]]

Options
    --help, -h  Display this help text.                                        
        --base  Specify an alternate base path. By default, all file paths are 
                relative to the Gruntfile. (grunt.file.setBase) *              
    --no-color  Disable colored output.                                        
   --gruntfile  Specify an alternate Gruntfile. By default, grunt looks in the 
                current or parent directories for the nearest Gruntfile.js or  
                Gruntfile.coffee file.                                         
   --debug, -d  Enable debugging mode for tasks that support it.               
       --stack  Print a stack trace when exiting with a warning or fatal error.
   --force, -f  A way to force your way past warnings. Want a suggestion? Don't
                use this option, fix your code.                                
       --tasks  Additional directory paths to scan for task and "extra" files. 
                (grunt.loadTasks) *                                            
         --npm  Npm-installed grunt plugins to scan for task and "extra" files.
                (grunt.loadNpmTasks) *                                         
    --no-write  Disable writing files (dry run).                               
 --verbose, -v  Verbose mode. A lot more information output.                   
 --version, -V  Print the grunt version. Combine with --verbose for more info. 
  --completion  Output shell auto-completion rules. See the grunt-cli          
                documentation for more information.                            

Options marked with * have methods exposed via the grunt API and should instead
be specified inside the Gruntfile wherever possible.

Available tasks
         watch  Run predefined tasks whenever watched files change.            
        concat  Concatenate files. *                                           
          copy  Copy files. *                                                  
  bower_concat  Concatenate installed Bower packages. *                        
       default  Alias for "concat", "bower_concat", "copy" tasks.              

Tasks run in the order specified. Arguments may be passed to tasks that accept
them by using colons, like "lint:files". Tasks marked with * are "multi tasks"
and will iterate over all sub-targets if no argument is specified.

The list of available tasks may change based on tasks directories or grunt
plugins specified in the Gruntfile or via command-line options.

For more information, see http://gruntjs.com/

bash-3.2$ n 7.0.0
bash-3.2$ node --version
v7.0.0
bash-3.2$ grunt --version
grunt-cli v1.2.0
grunt v0.4.5
bash-3.2$ grunt --help
Loading "bower-concat.js" tasks...ERROR
>> Error: Cannot find module 'internal/fs'
Grunt: The JavaScript Task Runner (v0.4.5)

Usage
 grunt [options] [task [task ...]]

Options
    --help, -h  Display this help text.                                        
        --base  Specify an alternate base path. By default, all file paths are 
                relative to the Gruntfile. (grunt.file.setBase) *              
    --no-color  Disable colored output.                                        
   --gruntfile  Specify an alternate Gruntfile. By default, grunt looks in the 
                current or parent directories for the nearest Gruntfile.js or  
                Gruntfile.coffee file.                                         
   --debug, -d  Enable debugging mode for tasks that support it.               
       --stack  Print a stack trace when exiting with a warning or fatal error.
   --force, -f  A way to force your way past warnings. Want a suggestion? Don't
                use this option, fix your code.                                
       --tasks  Additional directory paths to scan for task and "extra" files. 
                (grunt.loadTasks) *                                            
         --npm  Npm-installed grunt plugins to scan for task and "extra" files.
                (grunt.loadNpmTasks) *                                         
    --no-write  Disable writing files (dry run).                               
 --verbose, -v  Verbose mode. A lot more information output.                   
 --version, -V  Print the grunt version. Combine with --verbose for more info. 
  --completion  Output shell auto-completion rules. See the grunt-cli          
                documentation for more information.                            

Options marked with * have methods exposed via the grunt API and should instead
be specified inside the Gruntfile wherever possible.

Available tasks
         watch  Run predefined tasks whenever watched files change.            
        concat  Concatenate files. *                                           
          copy  Copy files. *                                                  
       default  Alias for "concat", "bower_concat", "copy" tasks.              

Tasks run in the order specified. Arguments may be passed to tasks that accept
them by using colons, like "lint:files". Tasks marked with * are "multi tasks"
and will iterate over all sub-targets if no argument is specified.

The list of available tasks may change based on tasks directories or grunt
plugins specified in the Gruntfile or via command-line options.

For more information, see http://gruntjs.com/
bash-3.2$ 
bash-3.2$ exit