The Primitive Type never
In this lesson, you will see the type never, which is used to indicate that something must never happen.
The type never
means that nothing occurs. It is used when a type guard cannot occur or in a situation where an exception is always thrown. There is a difference between void
and never
. A function that has the explicit return type of never
won’t allow your code to return undefined
, which is different from a void
function that allows code to return undefined
.
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