Is it possible to omit the expression of <T> when it is not necessary to define?

Is there a way to write code without using the <T> notation when it's not necessary?

Here is what I have in mind:

interface Props<?T> {
  className: string
  data?: T
}

const props: Props = {className: "hello, world"}
const propswithdata: Props<T> = {className: "hw", data: {something: "something"}}

Answer №1

Consider using Pick<T> in this scenario

interface Props<T> {
  className: string
  data?: T
}

type PropsWithoutData = Pick<Props<never>, 'className'>;

Check out the Playground for more

Given that Props is a generic without a default type for T, you must specify a type. If you have the ability to modify Props<T>, consider setting a default type for it

interface Props<T = never> {
  className: string
  data?: T
}

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