What is the preferred method for boolean comparisons in Typescript types?
I have devised the following types for this purpose, but I am curious if there is a more standard or efficient approach:
type And<T1 extends boolean, T2 extends boolean> = T1 extends T2 ? T1 extends true ? true : false : false
type Or<T1 extends boolean, T2 extends boolean> = T1 extends true ? T1 : T2
type Xor<T1 extends boolean, T2 extends boolean> = T1 extends T2 ? T2 extends T1 ? false : true : true
There isn't a standardized way to perform these type operations as they are not included in the default library. A request has been made at microsoft/TypeScript#31579 for these operations to be integrated into the language, but until then, individuals will need to create their own implementations.
Regarding whether there is a more effective method than yours, it ultimately depends on the specific use case and personal preferences. There doesn't seem to be a widely-accepted alternative approach to this task at the moment that significantly differs from your own.
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