Use JSDoc syntax for mapping

[dtinth]

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Reference:

• 🔖 javascript - How to document a dictionary in JSDoc? - Stack Overflow

[CLAassistant]

All committers have signed the CLA.

[IObert]

Looks good to me, thanks a lot for your contribution!

PS: It seems like the CLA signing didn't finish successfully. Can you please check the tool again?

[dtinth]

(done 😁)