My current structure looks like this:
export interface Complex {
getId<T>(entity: T): string
}
const test: Complex = {
getId<Number>(entity){return "1"} // encountering an error 'entity is implicitly any'
}
I am wondering why specifying the type of entity as entity:Number is necessary to resolve this issue?
By declaring an interface with a Generic Type Function (getById), you are able to reference the generic type as the function type.
An example of this implementation in TypeScript is:
interface Complex<T> {
getId(entity: T): string;
}
const test: Complex<Number> = {
getId(entity) {
return entity.toString();
}
}
This approach can be useful for scenarios like:
interface AbstractFactory {
create<T>(data: T): string;
}
const factory: AbstractFactory = {
create<T>(data: T): string {
return data.toString();
}
}
factory.create<Number>(123);
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