TypeScript · Middle · Question 63 of 75

How do you get the instance type and constructor arguments of a class?

type Svc = InstanceType<typeof ApiService>;
type Args = ConstructorParameters<typeof ApiService>;

✓Correct answer: With InstanceType and ConstructorParameters applied to typeof Class
2With ReturnType<ApiService>
3Classes can't be used in type operators

Explanation

ApiService as a type already means the instance type; typeof ApiService is the constructor itself.

Further reading

TS: Utility Types ↗

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