Tuple to Object

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 Statement

Given an array, transform it into an object type and the key/value must be in the provided array.

For example:

const tuple = ['tesla', 'model 3', 'model X', 'model Y'] as const
 
type result = TupleToObject<typeof tuple> // expected { 'tesla': 'tesla', 'model 3': 'model 3', 'model X': 'model X', 'model Y': 'model Y'}

Solution

// PropertyKey is provided by TypeScript and matches
//   type PropertyKey = 'string' | number | symbol
 
type TupleToObject<T extends readonly PropertyKey[]> = {
	[K in T[number]]: K
}