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Comment by yawnxyz | Hacker News Reader

I've made it a habit to check Mozilla's JS docs once in a while for functions like Flat() and FlatMap(). Sometimes if I find myself reaching for underscore/lodash, I'll check Mozilla docs first to see if there's some new function that can let me omit using lodash.

I'm often delighted to find new convenience functions I can just use without adding another dependable.

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I often use Lodash’s sumBy, groupBy and orderBy. Love the versatility and one-liner aspect.

E.g.

    sumBy(“orders”, “total.amount”)

Which input method are you using that double quotes are ” (U+201C) instead of " (U+0022)?

Wow, no clue. That was on mobile... web app or Octal (native app). Stock iOS English (US) keyboard.

Not that you have to, but just FYI you can disable "smart" punctuation in iOS Settings: General -> Keyboard -> Smart Punctuation. I don't know why they omitted the quotes around smart there.

there have been a lot of those added to the ES spec lately and a lot more coming soon. So it is always good to check MDN because I usually end up learning something new mostly.

Lodash includes guards for all it's functions which can help avoid "Cannot call function map of undefined" and similar errors.

So I still prefer using lodash map, reduce, filter, etc for that added defensiveness.

If you're chaining, you're still MUCH better off with Lodash. Native functions iterate once per function. Lodash uses an iterator and only loops through the list once.

Is there a Google equivalent to MDN?

No.

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