Replace var with let/const (#181) error

[kevinetore]

PR #181 seems to give the following error:

/usr/lib/node_modules/forever/node_modules/forever-monitor/lib/forever-monitor/monitor.js:38
let execPath = process.execPath;
^^^^^^^^
SyntaxError: Unexpected identifier
at Module._compile (module.js:439:25)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at Object.<anonymous> (/usr/lib/node_modules/forever/node_modules/forever-monitor/lib/index.js:14:19)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32).

[kibertoad]

What Node version are you using, and how can I reproduce?

[kevinetore]

@kibertoad Our app servers are using an older version of Node v6.17.1, which could be the reason why the newer syntax is failing on our machine. For now, I've downgraded the forever version to 1.0.0. Again, I assume that our Node version is the reason behind all this, so this issue can be marked as closed.

-- Update
I checked with this source which states that the let, const syntax should work with Node v6.17.1.

[kibertoad]

@kevinetore We are actually running CI on 6.17.1 and it seems to be working just fine. Can you double-check that this is the version that is actually used? What do you get when running node --version?