TypeScript · Middle · Question 72 of 75

How do you write a type for any JSON value?

type Json = string | number | boolean | null | Json[] | { [key: string]: Json };

✓Correct answer: A recursive union that references itself in arrays and objects
2object
3Record<string, any>

Explanation

Recursive type aliases are allowed when the recursion goes through object or array types.

Further reading

TS Handbook: Object Types ↗

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