Guide on converting any object with keys of type string to a generic type

I'm grappling with a function that yields an Output generic type. In this function, I initiate an API request that responds with a json object. My aim is to have the function return this json object in the Output Generic type format

Take a look at this example:

function myCustomFunc<Output>(): Promise<Output> {
  const apiResponse: {[Key: string]: string} = fetchFromAPI()

  return apiResponse as Output
}

My attempts to implement this are met with TypeScript error messages indicating the mismatch in type definitions, which comes as no surprise. I believe the ideal solution would involve creating a function to map each property from apiResponse to those of the Output type, but I'm unsure how to extract the attribute and value types of a Generic Type

Answer №1

If you desire to assume ownership for the data returned by getFromAPI(), you can accomplish this by implementing the following:

return getFromAPI()
   .then(response => response as unknown as Output);

Is this aligning with your expectations?

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