type Tuple=[{a:string,x:string,z:string},{b:string,x:string,z:string}]
type IntersectionOfTupleElementKeys<T>=...
type MyType = IntersectionOfTupleElementKeys<Tuple> // = ('a'|'x'|'z')&('b'|'x'|'z')='x'|'z'
I am working with a tuple type that has shared fields across each element (like the x and z in type Tuple). How can I find the intersection of these common fields ('x'|'z')?
To extract keys from a tuple item type, you can use the following logic:
type KeysOfTupleItems<T extends readonly any[]> = keyof T[number];
type ExampleType = KeysOfTupleItems<Tuple> // 'a'|'c'
By utilizing T[number], we combine all tuple item types into a union and then apply keyof to determine the intersection of their keys.
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