TypeScript const variable

TypeScript const variable is useful when we want to declare a variable which can not be reassigned.
For example if we declare a variable as:

const id = 14;

then we can not reassign the id variable.So if we try to reassign the id variable we will get compilation error.

id=2;

If we execute the above line then we will get the error

It is necessary to initialize const variables.If const variable is not initialized then compile time error is thrown

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