Typescript Tutorial #43 Type Assertions TypeScript

Runtime support comes with typecasting, whereas type assertion has no effect on runtime
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type assertions are purely a compile time construct and a way for you to provide hints to the compiler on how you want your code to be analyzed.

Type assertion tells the compiler about the type of the variable.Type assertion is similar to typecasting but it does not reconstruct the code or does any special checks. Type assertion is used to tell the compiler that we want to treat any as a number, or string.We must be sure while using type assertion as it disables type checking so the program may not run correctly if we are not confident enough.
Type assertions use the as keyword or an angle bracket
In TypeScript, type assertions (also known as type casting) allow you to explicitly tell the compiler about the type of a value, even when the compiler might not be able to infer it automatically. Type assertions are essentially a way to instruct the compiler to treat a value as a specific type, but they don't actually change the runtime representation of the value.

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