Grunt plugin grunt-exec v2.0.0 doesn't execute a simple command while v1.0.1 does - gruntjs

Question

I was using grunt-exec v1.0.1 with this configuration in Gruntfile.js:
grunt.initConfig({
exec: {
tsc: {
cmd: "tsc"
}
},
...
}
...
grunt.loadNpmTasks('grunt-exec');
grunt.registerTask('debug', [
...
'exec:tsc',
...
]);
Then running grunt debug in console tsc is executed correctly.
In another project with similar configuration it's installed the last version of
grunt-exec(v.2.0.0) and running grunt-debug the next error is returned:
Running "exec:tsc" (exec) task
>> Failed with: Error: spawn tsc ENOENT
Warning: Task "exec:tsc" failed. Use --force to continue.
With -verbose option it returns:
Running "exec:tsc" (exec) task
Verifying property exec.tsc exists in config...OK
File: [no files]
tsc
buffer : disabled
timeout : infinite
killSig : SIGTERM
shell : true
command : tsc
args : []
stdio : [ignore,pipe,pipe]
cwd : D:\Pruebas\Angular 2\ATemplate
exitcodes: 0
pid : undefined
>> Failed with: Error: spawn tsc ENOENT
Warning: Task "exec:tsc" failed. Use --force to continue.
I know I can have it working using v1.0.1 of grunt-exec but I want to know how must I do it with v2.0.0. The project documentation in github has not given me a clue.

Answer 1

Looks like the grunt-exec version v2.0.0 uses some ECMAScript features that are not supported in older versions of node.
The first one i saw was:
Symbol.match, String.prototype.endsWith that is not supported in node < v6.10.2
See here: http://node.green/
Upgrade your node version to fix this issue.