Generate a Map<keyof T, boolean> by extracting properties from an object

I've developed a typed function that works well for most scenarios. However, I am facing an issue when trying to handle a specific type of Argument that is currently invalid. How can I adjust my code to accommodate this type?

type Argument<T> =
  | keyof T
  | (keyof T)[]
  | Record<keyof T, any> // <- This part needs fixing

export function customizeClassNames<T>(style) {
  const handleArgs = (args: Argument<T>[]) => {}
  return (...args: Argument<T>[]) => handleArgs(args)
}

const sampleObject = { prop1: {}, prop2: 2 }
const customFunc = customizeClassNames<typeof sampleObject>(sampleObject)
customFunc('prop1') //works fine
customFunc('prop1', ['prop2']) //this is also valid
customFunc('prop1', ['prop2']) //another valid example
customFunc('prop1', ['prop2'], { prop2: 2 }) //however, this one is not working as expected

Answer №1

Opt for using partial to avoid requiring all elements each time:

export function generateClassNames<T>(style: T) {
  const handleArguments = (argumentsList: Partial<Argument<T>>[]) => {};
  return (...argumentsList: Partial<Argument<T>>[]) => handleArguments(argumentsList);
}

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