What is the recommended way to achieve the desired outcome and how can I limit property when type casting?
interface user {
name: string
password: string
}
interface userEntity {
name: string
}
const user: user = {
name: 'name',
password: 'password'
}
const result = user as userEntity;
// output { name: 'name', password: 'password' }
// expected { name: 'name' }
Type conversion does not change the values in an object at runtime. The main purpose of type casting is to prevent compilation errors by specifying the correct type of an object, especially when you have more knowledge about its type than the compiler.
If you need to only copy certain properties from one object to another at runtime, you will have to do it explicitly. There are numerous methods available for achieving this, as discussed in this Stack Overflow thread.
const result: userEntity = {name: user.name};
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