One practical application of the never type in typescript occurs when a function has an endpoint that is never reached. However, I'm unsure why the throw statement specifically results in this unreachable endpoint.
function error(message: string): never {
throw new Error(message);
}
Could someone clarify this for me, please?
Your failure function never actually finishes running, as it consistently generates an error rather than completing as anticipated:
function failure(message: string): never {
throw new Error(message); // <====== Stops with an error at this point
// <====== Will never proceed beyond this point
}
failure("bar");
// The code never reaches this stage
This implies that the function does not yield a return value, hence the never type is assigned to indicate this characteristic.
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