TypeScript Intermediate Quiz 5
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1. Used to create a type from an existing object.
Schema
Typeof
Instance
2. Used to declare a method that is part of an interface.
Define
Declare
Signature
3. Utility type that turns all properties into readonly.
Readonly
Locked
Fixed
4. Pattern to ensure a class has only one instance.
Factory
Singleton
Proxy
5. Used to dynamically access object properties.
Scope
Indexing
Accessor
6. Prevents further modifications to an object.
Freeze
Seal
Lock
7. What is the `Parameters` utility?
Gets return types
Gets parameter tuple type of a function
Gets interface properties
8. What is `ReadonlyArray<T>`?
A tuple
A set
An array that cannot be mutated
9. Which utility removes `null` and `undefined`?
NonNullable<T>
Required<T>
Omit<T, null>
10. What is a "module augmentation"?
Creating new modules
Adding new declarations to existing modules
Deleting modules
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