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 the type version of Array.unshift
For example:
type Result = Unshift<[1, 2], 0> // [0, 1, 2,]Solutions
Approach 1
type Unshift<T extends readonly any[], U> = [U, ...T]