Append to Typescript interface properties

Question

I have an API response like this:

{
  gender: 1,
  gender@formattedValue: "Male",
  category: 4,
  category@formattedValue: "Employee"
}

So it has lots of properties that are appended a @formattedValue.

Is it possible to create a typescript interface that automatically adds to every property @formattedValue? Of course leaving the original in tact, so intellisense shows both versions?

No, it isn't possible; concatenating string literals is not implemented — OliverRadini
– OliverRadini, Commented Jun 3, 2020 at 9:48
@OliverRadini thanks, so it means i have to manually add to all of them? — marchello
– marchello, Commented Jun 3, 2020 at 9:48
Unfortunately, as far as I can tell at the moment, it would mean that; it may be possible to do this by having a tool which searches for interfaces and creates a new interface with the additional adjusted properties — OliverRadini
– OliverRadini, Commented Jun 3, 2020 at 9:50

satanTime · Accepted Answer · 2020-06-03 10:26:39Z

1

Unfortunately no, you can't define interfaces with computed properties.

answered Jun 3, 2020 at 10:26

satanTime

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