There are several legit reasons why you'd do this. Unit tests, for example: override getRandom() with an implementation that always returns the same series of numbers, and now you have repeatable tests without touching the production code.

[–] WhiteRice@lemmy.ml 1 points 18 hours ago* (last edited 18 hours ago) (1 children)

Can you override Math.random within a local scope?

At my shop we do create generic covers for vendor specific functionality, for the reasons you stated. Though the practice was started in case we ever needed to swap vendors.

[–] bleistift2@sopuli.xyz 6 points 14 hours ago

You can, but you shouldn’t. You don’t know what else relies on Math.random. That’s why there’s the wrapper function. That you can override in unit tests without worrying about other, unrelated code.