type ExampleTuple=[{name:'Alice',age:25},{name:'Bob',age:30}]
type FilteredTuple=TupleOmit<ExampleTuple,'age'> // = [{name:'Alice'},{name:'Bob'}]
type IncorrectType =Omit<ExampleTuple[number],'age'>// = {name:'Alice'|'Bob'} This is not the desired type
I am in need of a generic type that can remove a specific field from each item in a tuple. How can I create the generic type TupleOmit?
To apply omit to each member of a tuple, you can use a mapped type in TypeScript:
type Tuple = [{a:'a1',b:'b1'},{a:'a2',b:'b2'}]
type TupleOmit<T extends any[], K extends PropertyKey> = {
[P in keyof T]: Omit<T[P], K>
}
type Result = TupleOmit<Tuple,'b'> // = [{a:'a1'},{a:'a2'}]
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