Crash or issue warnings on invalid config parameters

By mistake I’ve setup a configuration in package.json as:

  "mocha": {
    "-R": "tests/mocha-reporter"
  }

Mocha didn’t say the word, and ignored an invalid option (it should be R instead of -R).

It’ll be great if Mocha produces some feedback on such errors, so they do not come unnoticed.

Node.js v12.3.1 Mocha: v6.1.4

[plroebuck]

Mocha didn’t say the word, and ignored an invalid option (it should be R instead of -R).

Actually, that’s incorrect as well (and likely only working due to happy accident). It should be “reporter”, not “R”.

See example config for valid names.

[Alhadis]

Could you join Gitter? Wanted to chat on possible problems for something terminal-related.

Sorry, I forgot about this. I’ve joined.

EDIT: If I’m offline by the time you read this, please send me an e-mail. That’s always the best way to get hold of me, since I don’t use any social media. =)