Type Alias CommonPropKeys<T, Options>

CommonPropKeys<T, Options>: IsNever<T, {
    $else: T["length"] extends 0
        ? never
        : T["length"] extends 1
            ? keyof T[0]
            : T["length"] extends 2
                ? keyof T[0] & keyof T[1]
                : keyof T[0] & keyof T[1] & TuplePlus.CommonPropKeys<Tail<Tail<T>>>;
    $then: Options["$never"];
}>

⚗️ transform 🔢 customization

Gets the common property keys of the elements in tuple T.

Type Parameters

T extends Record<KeyTypes, unknown>[]
Options extends TuplePlus.CommonPropKeys.Options = TuplePlus.CommonPropKeys.DefaultOptions

Example

import { type TuplePlus } from 'type-plus'

type R = TuplePlus.CommonPropKeys<[{ a: number }, { b: number }]> // never
type R = TuplePlus.CommonPropKeys<[{ a: number, c: 1 }, { b: number, c: 2 }]> // 'c'

Type Param: Options['$never']

Return type when T is never. Default to never.

Type Alias CommonPropKeys<T, Options>

Type Parameters

Example

Type Param: Options['$never']

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