Disclosure

Most of the problems under my TypeHero Challenges folder were either obtained from typehero.dev or from type-challenges repo. Purpose of these articles are just to document my approaches for my easy reference. Please visit the respective links for more info.

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Problem Description

Implement a generic TupleToUnion<T> which covers the values of a tuple to its values union.

For example:

type Arr = ['1', '2', '3']
 
type Test = TupleToUnion<Arr> // expected to be '1' | '2' | '3'

Solutions

Approach

type TupleToUnion<T extends readonly any[]> = T[number]