@jake.backues@gmail.com

It's called the (fat) arrow function, it's just a bit of syntactical sugar to represent function() {} in ES2015.

For example:
.map(v => CHAR_TO_MORSE[v] || v)
in ES2015 is the equivalent of:
.map(function(v) { return CHAR_TO_MORSE[v] || v })

See here for more information: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions

Pretty sure it's broken.

Damn, I was just missing the Object prototype override, well done!

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Maybe it is worth calling out 'y' is not a vowel in the description.

I generally consider 'y' to be a consonant, but if it is going to confuse some people, it's perhaps better to be more explicit about it.

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Added examples to description.

Thanks for the hint on array ranges - I'm trying to learn CS by translating some of the easier katas here, and didn't know about the range feature. I've rewritten that part as per your recommendation too.

Thanks for all the feedback.

I'm pretty sure there's no difference writing multiple vars or one var with comma separated variable names (if that's what you're referring to).
I think it's purely a stylistic choice.

Also vars inside for loops etc. are hoisted to the top of the function scope anyway, so it doesn't matter where you declare them. Again, stylistic choice.

Yeah I have been, been manually cleaning up and tweaking the output, so it's not 100% low effort stuff, but I clearly missed that :)

I've fixed it up, thanks for the heads up. I'll keep this in mind for any future work.

Hah, didn't notice that on the history :)

I've fixed up the translation, thanks.

Can use \W instead of ^\w to match non-word characters, in case you didn't know :)

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