TypeScript · Senior · Question 55 of 75

TypeScript has no higher-kinded types. How do libraries emulate `F<A>` where `F` is generic?

✓Correct answer: With a registry interface that maps a string "URI" to a type constructor, extended via declaration merging
2With typeof F<A>
3They can't - libraries only use any

Explanation

fp-ts and Effect use such encodings to write functions generic over containers like Option or Array.

Further reading

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