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Creating intersection types - Using TypeScript with React

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#1

Its still unclear to me why this
const ab_v1: A_and_B = {

    doIt: (a: string) => { }

}

did not raise error even this on does not match with the interface B. And A_B should march both.

Can you please elaborate on this difference?

Thanks

#2

@parth1
The type of ‘a’ property in type B is intersected with the type of ‘a’ property in type A. That’s why for
ab_v1, both types A and B are intersected to string and we do not get any error here.

But in ab_v2 case, the type of ‘b’ property in type B is not intersected with type A because we don’t have property ‘b’ here. That’s why getting an error here.