Grokking TypeScript
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Readonly Properties
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In TypeScript, the readonly keyword is used to create properties that cannot be modified after they are initialized. This is particularly useful when defining constants within a class that should not change once set.

By using readonly, TypeScript ensures that any attempt to modify the property after initialization results in a compilation error, preventing unintended data modifications.

Readonly properties help enforce immutability, a key principle in programming that reduces bugs by ensuring certain values remain unchanged throughout an object's lifecycle.

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