Sometimes, we want to implement a TypeScript decorator.
In this article, we’ll look at how to implement a TypeScript decorator.
How to implement a TypeScript decorator?
To implement a TypeScript decorator, we should create a function that modifies an existing function and returns it.
For instance, we write
const Entity = (discriminator: string) => {
return function (target) {
// ...
};
};
@Entity("cust")
export class MyCustomer {
//...
}
to create the Entity function that returns a function.
Then we use the Entity decorator with the discriminator parameter set with the argument.
It returns a modified version of the MyCustomer class which is the function that’s being returned in Entity.
Conclusion
To implement a TypeScript decorator, we should create a function that modifies an existing function and returns it.
