Level Up Your TypeScript: as vs. satisfies vs. Type Annotations
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- čas přidán 8. 09. 2024
- This video is about the difference between the as operator, satisfies operator and type annotations in TypeScript.
The as operator is used to bypass the type checking of TypeScript. This means that the compiler will trust the programmer that the types are correct, even if they are not there. This can be dangerous because it can lead to runtime errors.
The satisfies operator is used to check if a value satisfies a type or interface.
Type annotations are used to specify the type of a variable.
In conclusion, the as operator is used to bypass type checking, the satisfies operator is used to check if a value satisfies a type or interface, and type annotations are used to specify the type of a variable. The as operator can be dangerous because it can lead to runtime errors. The satisfies operator is a safer way to check if a value satisfies a type or interface, but it does not attach a type to the variable. Type annotations are used to specify the type of a variable.
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