Can the scenario below be achieved?
type test = <T extends string>(key: T, object: { [`${T}`]: number }) => void
^^^^^^^^
I am aware that we can assign type literal values using that syntax, but after some experimentation, it seems that setting keys in the same way is not possible.
Nevertheless, theoretically, I believe it should be achievable given that mapped keys using as are feasible...
Does anyone have any insights into this?
If you want to utilize Record<T, number> (highly recommended) or stick with traditional method:
type example = <T extends string>(key: T, object: { [K in T]: number }) => void
Note that type objects behave differently than JS objects.
For additional fields, incorporate the & (merge) operator:
type example = <T extends string>(key: T, object: { [K in T]: number } & {foo: "bar"}) => void
Alternatively,
type example = <T extends string>(key: T, object: Record<T, number> & {foo: "bar"}) => void
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