Sometimes, we want to add strongly-typed functions as parameters possible in TypeScript.
In this article, we’ll look at how to add strongly-typed functions as parameters possible in TypeScript.
How to add strongly-typed functions as parameters possible in TypeScript?
To add strongly-typed functions as parameters possible in TypeScript, we write define a type to be a function with the type for each parameter and the return type of the function.
For instance, we write
type FunctionName = (n: inputType) => any;
class ClassName {
save(callback: FunctionName): void {
callback(data);
}
}
to create the FunctonName type which is set to type with signature n of type inputType and returns any type data.
And then we set the save method in ClassName to FunctionName to use it.
Conclusion
To add strongly-typed functions as parameters possible in TypeScript, we write define a type to be a function with the type for each parameter and the return type of the function.
