metalshan

Try/catch point is an in-general thing. Irrespective of language. Always better to handle errors by yourself.

I was not aware of the browser deprecation of Shared array buffer. But this (or something like this) is a part of the ECMA proposal which is in stage 4. https://github.com/tc39/ecmascript_sharedmem

I said using forEach (or in-builts) are always a good practice. Now like you have to. For an example, if you have an array with no holes in it, for is better performant then forEach.