Const is primarily for documentation to indicate that the assignment happens onl...

archgoon on Aug 19, 2019 | parent | context | favorite | on: Why Const Doesn't Make C Code Faster

Const is primarily for documentation to indicate that the assignment happens only once and won't be redefined. Using 'let' or 'var' indicates to the reader that the variables value will be reassigned in the function.

It's not about the compiler.

eterm on Aug 19, 2019 [–]

Also let/const don't get hoisted to the start of the function, declaration using var does.