output "No synth app detected" in non-synth-app directory

[kumagi]

Thrown error in requiring back/back-app was not catched. So error message was such a mess.

$ synth s

module.js:340
    throw err;
    ^
Error: Cannot find module '/home/kumagi/back/back-app'
  at Function.Module._resolveFilename (module.js:338:15)
  at Function.require.resolve (module.js:384:19)
  at requireUncached (/path/to/synth/synth/lib/requireUncached.js:16:14)
  at startServer (/path/to/synth/synth/lib/commands.js:65:15)
  at Object.exports.startServer (/path/to/synth/synth/lib/commands.js:95:5)
  at Object.<anonymous> (/path/to/synth/synth/bin/synth:64:12)
  at Module._compile (module.js:456:26)
  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 Function.Module.runMain (module.js:497:10)
  at startup (node.js:119:16)
  at node.js:902:3

It should be

$ synth s
No synth app detected.

Thanks.

[JonAbrams]

Good find, thanks!

[JonAbrams]

Could you check to make sure the error is the one you're expecting?

e.g. if (err.code === 'MODULE_NOT_FOUND') { … }

[kumagi]

OK. I'll do it, please wait.

[JonAbrams]

Still planning to make the change or would you like me to do it?

[JonAbrams]

I had to rework it anyways since the PR no longer merged cleanly. Thanks for the submission though!