Absolute

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 Absolute type. A type that take string, number or bigint. The output should be a positive number string

For example:

type Test = -100
type Result = Absolute<Test> // expected to be "100"

Solutions

Approach

type Absolute<T extends number | string | bigint> =
	`${T}` extends `-${infer RestNumber}`
		? RestNumber
		: `${T}`;